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4.2ghz i5 4670k = Complete, need further advice (Fire Strike Extreme Pics)

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  • Overclocking
  • CPUs
  • Intel i5
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a b K Overclocking
October 31, 2013 5:23:24 PM

Hi,

I've managed to get my CPU @ 4.2Ghz Stable @ 64 degrees max through the following settings on my MSI G45 M/B with 212 EVO CPU fan.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled

if i drop the CPU voltage it becomes unstable/crashes.

i'm looking for some advice on reducing the Voltage but retaining the 4.2Ghz.

Sorry i'm pretty new at this.

I've ran 2 x Fire Strike Extreme'sm 2 x Ice Storm Extreme and 2 x Cloud Gate @1080p on a 280x this and you can see the difference below.... it seems worth it on Ice Storm / Cloud Gate but not Fire Strike.

Which makes me think, is it worth overclocking ??

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ

More about : 2ghz 4670k complete advice fire strike extreme pics

a b K Overclocking
November 1, 2013 10:45:56 AM

Hi all,

i would really appreciate some advice here. My system spec is in the signature.

i'm currently using this O/C profile.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled
XMP - Profile 1.

Below is a screenshot of the system running stable for 10 mins.

Have i got a poor CPU? if i drop to 1.175 Core it freezes or BSOD.

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a c 159 K Overclocking
a c 98 à CPUs
November 1, 2013 11:52:52 AM

Jonathan Cave said:
Hi,

I've managed to get my CPU @ 4.2Ghz Stable @ 64 degrees max through the following settings on my MSI G45 M/B with 212 EVO CPU fan.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled

if i drop the CPU voltage it becomes unstable/crashes.

i'm looking for some advice on reducing the Voltage but retaining the 4.2Ghz.

Sorry i'm pretty new at this.

I've ran 2 x Fire Strike Extreme'sm 2 x Ice Storm Extreme and 2 x Cloud Gate @1080p on a 280x this and you can see the difference below.... it seems worth it on Ice Storm / Cloud Gate but not Fire Strike.

Which makes me think, is it worth overclocking ??

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ


It doesn't appear that you will be able to lower your voltage. Besides, 1.20 v. is a safe setting to use. You may try lowering your Ring Ratio to something like 35 and see if that helps. I found that increasing my memory voltage made a big difference in OC stability.

Is it worth it? That depends upon the application, as you have demonstrated. Note: You may want to re-run your tests and get at least 3 results before making any judgements. The same test can yield different results when repeated.

Jonathan Cave said:
Hi all,

i would really appreciate some advice here. My system spec is in the signature.

i'm currently using this O/C profile.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled
XMP - Profile 1.

Below is a screenshot of the system running stable for 10 mins.

Have i got a poor CPU? if i drop to 1.175 Core it freezes or BSOD.



I would say that you have an average to pretty good CPU. I don't see any problems with your current results but you clearly have not reached the limit of what this CPU is ultimately capable of.

Yogi



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a b K Overclocking
November 1, 2013 12:08:26 PM

Y0GI said:
Jonathan Cave said:
Hi,

I've managed to get my CPU @ 4.2Ghz Stable @ 64 degrees max through the following settings on my MSI G45 M/B with 212 EVO CPU fan.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled

if i drop the CPU voltage it becomes unstable/crashes.

i'm looking for some advice on reducing the Voltage but retaining the 4.2Ghz.

Sorry i'm pretty new at this.

I've ran 2 x Fire Strike Extreme'sm 2 x Ice Storm Extreme and 2 x Cloud Gate @1080p on a 280x this and you can see the difference below.... it seems worth it on Ice Storm / Cloud Gate but not Fire Strike.

Which makes me think, is it worth overclocking ??

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ

STOC

Overclocked @ 4.2GHZ


It doesn't appear that you will be able to lower your voltage. Besides, 1.20 v. is a safe setting to use. You may try lowering your Ring Ratio to something like 35 and see if that helps. I found that increasing my memory voltage made a big difference in OC stability.

Is it worth it? That depends upon the application, as you have demonstrated. Note: You may want to re-run your tests and get at least 3 results before making any judgements. The same test can yield different results when repeated.

Jonathan Cave said:
Hi all,

i would really appreciate some advice here. My system spec is in the signature.

i'm currently using this O/C profile.

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled
XMP - Profile 1.

Below is a screenshot of the system running stable for 10 mins.

Have i got a poor CPU? if i drop to 1.175 Core it freezes or BSOD.



I would say that you have an average to pretty good CPU. I don't see any problems with your current results but you clearly have not reached the limit of what this CPU is ultimately capable of.

Yogi





that's great to hear, i need some advice on overclocking this from someone who has the time to help, anyone?
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a b K Overclocking
November 1, 2013 1:22:40 PM

Quote:
1. Set "All Core" CPU Multiplier to 44X
2. Set CPU cache Multiplier also called the Ring bus multiplier to 35
3. Set Fixed CPU Vcore to 1.25 -1.30v
4. Set CPU Cache Voltage also could be called Ring Bus voltage to 1.20v -1.25vv
5. Set Vrin also called "CPU Input Voltage" To 1.9v - 2.1v

DO NOT and i repeat DO NOT mix up the "Cpu Voltage" and the "CPU Input Voltage". One is for the CPU and the other for the On Die VRM's.



Can you kindly align the above settings to these settings (below) as some of the terminology evades me.

Quote:

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled
XMP - Profile 1


i'm serious about getting this CPU to 4.4ghz stable and will do everything you reccomend and post regular updates - in other words i wont waste your time!
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a b K Overclocking
November 1, 2013 1:39:45 PM

Here is a Full list of the O/C menu in my bios if it helps?


BIOS Setup 3-18 CPU Base Clock Apply Mode [Auto]
Sets the applying mode for adjusted CPU base clock.
[Auto] This setting will be configured automatically by BIOS.
[Next Boot] CPU will run the adjusted CPU base clock after reboot.
[Immediate] CPU runs the adjusted CPU base clock immediately.
CPU PCIE PLL [Auto]
Selects a PLL (Phase Lock Loop) mode for CPU PCIe. This item appears when the
installed CPU supports this setting.
[Auto] This setting will be configured automatically by BIOS.
[LC PLL] Enables LC PLL for normal usage.
[SB PLL] Enables SB PLL for extreme overclocking.
Filter PLL [Auto]
Enables or disables the filter PLL for CPU. This item appears when the installed CPU
supports this setting.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Provides wide range of base clock for overclocking when base clock
strap be set to higher value.
[Disabled] Provides normal range of base clock.
CPU Ratio Mode [Auto]
Selects the CPU Ratio operating mode.
[Auto] This setting will be configured automatically by BIOS.
[Fixed Mode] Fixes the CPU ratio.
[Dynamic Mode] CPU ratio will be changed dynamically according to the CPU
loading.
Adjust CPU Ratio [Auto]
Sets the CPU ratio that is used to determine CPU clock speed. This item can only be
changed if the processor supports this function.
Adjusted CPU Frequency
Shows the adjusted CPU frequency. Read-only.
EIST [Enabled]
Enables or disables the Enhanced Intel® SpeedStep Technology.
[Enabled] Enables the EIST to adjust CPU voltage and core frequency
dynamically. It can decrease average power consumption and average
heat production.
[Disabled] Disables EIST.
Intel Turbo Boost [Enabled]
Enables or disables the Intel® Turbo Boost. This item appears when the installed CPU
supports this function.
[Enabled] Enables this function to boost CPU performance automatically above
rated specifications when system request the highest performance
state.
[Disabled] Disables this function.








3-19 BIOS Setup
Chapter 3
Enhanced Turbo [Auto]
Enables or disables Enhanced Turbo function for all CPU cores to boost CPU
performance.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] All CPU cores would be increased to maximum turbo ratio.
[Disabled] Disables this function.
Adjust Ring Ratio [Auto]
Sets the ring ratio. The valid value range depends on the installed CPU.
Adjusted Ring Frequency
Shows the adjusted Ring frequency. Read-only.
Adjust GT Ratio [Auto]
Sets the integrated graphics ratio. The valid value range depends on the installed
CPU.
Adjusted GT Frequency
Shows the adjusted integrated graphics frequency. Read-only.
DRAM Reference Clock [Auto]
Sets the DRAM reference clock. The valid value range depends on the installed CPU.
This item appears when a CPU that supports this adjustment is installed.
DRAM Frequency [Auto]
Sets the DRAM frequency. Please note the overclocking behavior is not guaranteed.
Adjusted DRAM Frequency
Shows the adjusted DRAM frequency. Read-only.
Extreme Memory Profile (X.M.P) [Disabled]
X.M.P. (Extreme Memory Profile) is the overclocking technology by memory module.
This item will be available when you install the memory modules that support X.M.P.
technology.
[Disabled] Disables this function.
[Profile 1] Uses profile1 over-clocking settings of installed XMP memory module.
[Profile 2] Uses profile2 over-clocking settings of installed XMP memory module.
DRAM Timing Mode [Auto]
Selects the memory timing mode.
[Auto] DRAM timings will be determined based on SPD (Serial Presence
Detect) of installed memory modules.
[Link] Allows user to configure the DRAM timing manually for all memory
channel.
[UnLink] Allows user to configure the DRAM timing manually for respective
memory channel.
Advanced DRAM Configuration
Press <Enter> to enter the sub-menu. This sub-menu will be activated after setting
[Link] or [Unlink] in “DRAM Timing Mode”. User can set the memory timing for each
memory channel. The system may become unstable or unbootable after changing
memory timing. If it occurs, please clear the CMOS data and restore the default
settings. (Refer to the Clear CMOS jumper/ button section to clear the CMOS data,
and enter the BIOS to load the default settings.)











Chapter 3
BIOS Setup 3-20 DRAM Training Configuration
Press <Enter> to enter the sub-menu. Enables or disables the various training ways of
DRAM. The system may become unstable or unbootable after changing these items
in this sub-menu. If it occurs, please clear the CMOS data and restore the default
settings. (Refer to the Clear CMOS jumper/ button section to clear the CMOS data,
and enter the BIOS to load the default settings.)
Memory Fast Boot [Auto]
Enables or disables the initiation and training for memory every booting.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Memory will completely imitate the archive of first initiation and first
training. After that, the memory will not be initialed and trained when
booting to accelerate the system booting time.
[Disabled] The memory will be initialed and trained every booting.
DigitALL Power
Press <Enter> to enter the sub-menu. Controls the digital powers related to CPU
PWM.
CPU Phase Control [Auto]
Controls PWM phase proportionally to the CPU loading. If set to "Auto", BIOS will
optimize the CPU PWM phase automatically.
[Auto] This setting will be configured automatically by BIOS.
[Disabled] Disables the PWM power phase switching feature.
CPU Vdroop Offset Control [Auto]
Sets a percentage of offset voltage for CPU vdroop. If set to "Auto", BIOS will
configure this setting automatically. [Options: Auto, +12.5%, +25%, +37.5%, +50%,
+62.5%, +75%, +87.5%, +100%]
CPU Over Voltage Protection [Auto]
Sets the voltage limit for CPU over-voltage protection. If set to "Auto", BIOS will
configure this setting automatically. Higher voltage provides less protection and
may damage the system.
CPU Under Voltage Protection [Auto]
Sets the voltage limit for CPU under-voltage protection. If set to "Auto", BIOS will
configure this setting automatically. Higher voltage provides less protection and
may damage the system.
CPU Over Current Protection [Auto]
Sets the current limit for CPU over-current protection. If set to "Auto", BIOS will
configure this setting automatically. Higher percentage provides less protection and
may damage the system.
Phase Over Current Protection [Enabled]
Enables or disables the phase over-current protection.
[Enabled] Sets the current limit on the phase for over-current protection.
[Disabled] Disables this function.









3-21 BIOS Setup
Chapter 3
CPU Switching Frequency [Auto]
Sets the PWM working speed to stabilize CPU Core voltage and minimize ripple
range. Increasing the PWM working speed will cause higher temperature of
MOSFET. So please make sure a cooling solution is well-prepared for MOSFET
before you increase the value. If set to "Auto", BIOS will configure this setting
automatically.
CPU VRM Over Temperature Protection [Enabled]
Enables or disables the CPU VRM over-temperature protection.
[Enabled] Sets the temperature limit on CPU VRM for over-temperature
protection.
[Disabled] Disables this function.
Digital Compensation Level [Auto]
Sets the current compensation level for CPU PWM when the MOS phases are
changed. If set to "Auto", BIOS will configure this setting automatically. Higher
compensation level provides more overclocking ability.
Imon Overwrite [Auto]
Sets the Imon current for CPU.
[Auto] This setting will be configured automatically by BIOS.
[Quarter] Sets the Imon current into quarter.
[Half] Sets the Imon current into half.
[Disabled] Sets the default values for Imon current.
Transient Boost [Disabled]
Enables or disables the transient boost.
[Enabled] Enables this function may lead into a stable system under heavy
system loading.
[Disabled] Disables this function.
SVID Communication [Auto]
Enables or disables SVID (Serial Voltage Identification) support.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] PWM phase will be changed dynamically according to the CPU SVID
(Serial Voltage Identification).
[Disabled] Disables SVID (Serial Voltage Identification) support.
VCCIN Voltage [Auto]
Sets the CPU input voltage. The CPU input voltage is the CPU power source that is
shared with components of the CPU.
Current VCCIN Voltage
Shows current CPU VCCIN voltage. Read-only.
CPU Core Voltage Mode/ CPU Ring Voltage Mode/ CPU GT Voltage Mode [Auto]
Selects the control modes for these voltages.
[Auto] This setting will be configured automatically by BIOS.
[Adaptive Mode] Sets adaptive voltages automatically for optimizing the system
performance.
[Override Mode] Allows you to set these voltages manually.









Chapter 3
BIOS Setup 3-22 CPU Core Voltage/ CPU Ring Voltage/ CPU GT Voltage [Auto]
Sets these voltages. If set to "Auto", BIOS will set these voltages automatically or you
can set it manually.
CPU Core Voltage Offset Mode/ CPU Ring Voltage Offset Mode/ CPU GT Voltage
Offset Mode/ CPU SA Voltage Offset Mode/ CPU IO Analog Voltage Offset Mode/
CPU IO Digital Voltage Offset Mode [Auto]
Selects the voltage offset modes.
[Auto] This setting will be configured automatically by BIOS.
[+] Allows you to set the positive offset voltage.
[-] Allows you to set the negative offset voltage.
CPU Core Voltage Offset/ CPU Ring Voltage Offset/ CPU GT Voltage Offset/ CPU
SA Voltage Offset/ CPU IO Analog Voltage Offset/ CPU IO Digital Voltage Offset
[Auto]
Set the offset values for these voltages.
Current CPU Core Voltage/ Current CPU Ring Voltage/ Current CPU GT Voltage/
Current CPU SA Voltage/ Current CPU IO Digital Voltage
Show the current voltages. Read-only.
Internal VR OVP OCP Protection [Auto]
Enables or disables the over-voltage protection and over-current protection for CPU
internal VR (Voltage Regulator).
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Sets the voltage limit on the CPU internal VR for over-voltage protection
and over-current protection.
[Disabled] Disables this function for overclocking.
Internal VR Efficiency Management [Auto]
Enables or disables the CPU internal VR efficiency management.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Enables the VR effciency management for power-saving control.
[Disabled] Disables this function.
DRAM Voltage [Auto]
Sets the memory voltage. If set to "Auto", BIOS will set memory voltage automatically
or you can set it manually.
Current DRAM Voltage
Shows current memory voltage. Read only.
PCH 1.05 Voltage/ PCH 1.5 Voltage
Set these voltages. If set to "Auto", BIOS will set these voltages automatically or you
can set it manually.
Current PCH 1.05 Voltage
Shows current PCH 1.05 voltage. Read only.
CPU Memory Changed Detect [Enabled]
Enables or disables the system to issue a warning message during boot when the
CPU or memory has been replaced.
[Enabled] The system will issue a warning message during boot and than needs
to load the default settings for new devices.
[Disabled] Disables this function and keeps the current BIOS settings.











3-23 BIOS Setup
Chapter 3
Spread Spectrum
This function reduces the EMI (Electromagnetic Interference) generated by modulating
clock generator pulses.
[Enabled] Enables the spread spectrum function to reduce the EMI
(Electromagnetic Interference) problem.
[Disabled] Enhances the overclocking ability of CPU Base clock.
Important
If you do not have any EMI problem, leave the setting at [Disabled] for optimal
system stability and performance. But if you are plagued by EMI, select the value of
Spread Spectrum for EMI reduction.
The greater the Spread Spectrum value is, the greater the EMI is reduced, and
the system will become less stable. For the most suitable Spread Spectrum value,
please consult your local EMI regulation.
Remember to disable Spread Spectrum if you are overclocking because even a
slight jitter can introduce a temporary boost in clock speed which may just cause
your overclocked processor to lock up.
CPU Specifications
Press <Enter> to enter the sub-menu. This sub-menu displays the information of
installed CPU. You can also access this information menu at any time by pressing
[F4]. Read only.
CPU Technology Support
Press <Enter> to enter the sub-menu. The sub-menu shows what the key features
does the installed CPU support. Read only.
MEMORY-Z
Press <Enter> to enter the sub-menu. This sub-menu displays all the settings and
timings of installed memory. You can also access this information menu at any time by
pressing [F5].
DIMM1~4 Memory SPD
Press <Enter> to enter the sub-menu. The sub-menu displays the information of
installed memory. Read only.
CPU Features
Press <Enter> to enter the sub-menu.
Hyper-Threading Technology [Enabled]
The processor uses Hyper-Threading technology to increase transaction rates
and reduces end-user response times. Intel Hyper-Threading technology treats
the multi cores inside the processor as multi logical processors that can execute
instructions simultaneously. In this way, the system performance is highly
improved.
[Enable] Enables Intel Hyper-Threading technology.
[Disabled] Disables this item if the system does not support HT function.
Active Processor Cores [All]
This item allows you to select the number of active processor cores.











Chapter 3
BIOS Setup 3-24 Limit CPUID Maximum [Disabled]
Enables or disables the extended CPUID value.
[Enabled] BIOS will limit the maximum CPUID input value to circumvent
boot problems with older operating system that do not support the
processor with extended CPUID value.
[Disabled] Use the actual maximum CPUID input value.
Execute Disable Bit [Enabled]
Intel’s Execute Disable Bit functionality can prevent certain classes of malicious
“buffer overflow” attacks where worms attempt to execute code to damage the
system. It is recommended that keeps this item enabled always.
[Enabled] Enables NO-Execution protection to prevent the malicious attacks
and worms.
[Disabled] Disables this function.
Intel Virtualization Tech [Enabled]
Enables or disables Intel Virtualization technology.
[Enabled] Enables Intel Virtualization technology and allows a platform to run
multiple operating systems in independent partitions. The system
can function as multiple systems virtually.
[Disabled] Disables this function.
Hardware Prefetcher [Enabled]
Enables or disables the hardware prefetcher (MLC Streamer prefetcher).
[Enabled] Allows the hardware prefetcher to automatically pre-fetch data
and instructions into L2 cache from memory for tuning the CPU
performance.
[Disabled] Disables the hardware prefetcher.
Adjacent Cache Line Prefetch [Enabled]
Enables or disables the CPU hardware prefetcher (MLC Spatial prefetcher).
[Enabled] Enables adjacent cache line prefetching for reducing the cache
latency time and tuning the performance to the specific application.
[Disabled] Enables the requested cache line only.
CPU AES Instructions [Enabled]
Enables or disables the CPU AES (Advanced Encryption Standard-New
Instructions) support. This item appears when a CPU supports this function.
[Enabled] Enables Intel AES support.
[Disabled] Disables Intel AES support.
Intel Adaptive Thermal Monitor [Enabled]
Enables or disables the Intel adaptive thermal monitor function to protect the CPU
from overheating.
[Enabled] Throttles down the CPU core clock speed when the CPU is over the
adaptive temperature.
[Disabled] Disables this function.







3-25 BIOS Setup
Chapter 3
Intel C-State [Auto]
C-state is a processor power management technology defined by ACPI.
[Auto] This setting will be configured automatically by BIOS.
[Enabled] Detects the idle state of system and reduce CPU power consumption
accordingly.
[Disabled] Disable this function.
C1E Support [Disabled]
Enables or disables the C1E function for power-saving in halt state. This item
appears when "Intel C-State" is enabled.
[Enabled] Enables C1E function to reduce the CPU frequency and voltage for
power-saving in halt state.
[Disabled] Disables this function.
Package C State limit [Auto]
This item allows you to select a CPU C-state mode for power-saving when system
is idle. This item appears when "Intel C-State" is enabled.
[Auto] This setting will be configured automatically by BIOS.
[C0~C7s] The power-saving level from high to low is C7s, C7, C6, C3, C2,
then C0.
[No limit] No c-state limit for CPU.
LakeTiny Feature [Disabled]
Enables or disables Intel Lake Tiny technology with iRST for SSD. This item
appears when "Intel C-State" is enabled.
[Enabled] Enhance the dynamic IO load adjusted performance for accelerating
the SSD speed.
[Disabled] Disables this feature.
Note: The following items will appear when "Intel Turbo Boost " is enabled.
Long Duration Power Limit (W) [Auto]
Sets the long duration TDP power limit for CPU in Turbo Boost mode.
Long Duration Maintained (s) [Auto]
Sets the maintaining time for "Long duration power Limit(W)".
Short Duration Power Limit (W) [Auto]
Sets the short duration TDP power limit for CPU in Turbo Boost mode.
CPU Current limit (A) [Auto]
Sets maximum current limit of CPU package in Turbo Boost mode. When the
current is over the specified limit value, the CPU will automatically reduce the core
frequency for reducing the current.
1/2/3/4-Core Ratio Limit [Auto]
These items only appear when a CPU that support this function is installed. These
items allow you to set the CPU ratios for different number of active cores in turbo
boost mode. These items appear when the installed processor supports this
function.
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a b K Overclocking
November 1, 2013 1:47:01 PM

this is what i think however i may be wrong?

CPU Multiplier = Adjust CPU Ratio ?
Ring bus multiplier = Adjust Ring Ratio?
Set Fixed CPU Vcore = ?
CPU Cache Voltage / Ring Bus voltage = CPU Core Voltage Mode/ CPU Ring Voltage Mode/ CPU GT Voltage Mode ?
Vrin = VCCIN Voltage?
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a c 159 K Overclocking
a c 98 à CPUs
November 1, 2013 2:09:36 PM

Jonathan Cave said:
Quote:
1. Set "All Core" CPU Multiplier to 44X
2. Set CPU cache Multiplier also called the Ring bus multiplier to 35
3. Set Fixed CPU Vcore to 1.25 -1.30v
4. Set CPU Cache Voltage also could be called Ring Bus voltage to 1.20v -1.25vv
5. Set Vrin also called "CPU Input Voltage" To 1.9v - 2.1v

DO NOT and i repeat DO NOT mix up the "Cpu Voltage" and the "CPU Input Voltage". One is for the CPU and the other for the On Die VRM's.



Can you kindly align the above settings to these settings (below) as some of the terminology evades me.

Quote:

CPU ratio: 42
CPU ratio: mode: Dynamic
Ring ratio: 41
CPU Core Voltage: 1.2
CPU Ring Voltage: 1.175
VR efficiency management: Disabled
XMP - Profile 1


i'm serious about getting this CPU to 4.4ghz stable and will do everything you reccomend and post regular updates - in other words i wont waste your time!


OK. I'll try:

1. Set "All Core" CPU Multiplier to 44X = Your "CPU Ratio"

2. Set CPU cache Multiplier also called the Ring bus multiplier to 35 = Your "Ring Ratio"

3. Set Fixed CPU Vcore to 1.25 -1.30v = Your "CPU Core Voltage"
and "Fixed" means set it to "Override" mode (NOT Adaptive)

4. Set CPU Cache Voltage also could be called Ring Bus voltage to 1.20v -1.25v = Your "CPU Ring Voltage"

5. Set Vrin also called "CPU Input Voltage" To 1.9v - 2.1v = VCCIN Voltage (P. 3-21 of the manual)

Is that better?

Yogi
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a b K Overclocking
November 6, 2013 5:14:13 PM

Yogi, i'm so sorry i didn't realise you had replied. i'll give them a go right now and get back to you buddy.

EDIT: ok so the stress tests are holding up @ 4.4hgz using prime 95

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.3
CPU Core Voltage= fixed
CPU Ring Voltage = 1.25
VCCIN Voltage = 2.1

as you can see i've used the higher voltages to see if it would run. RealTemp shows 76 degree's at those voltages.

Which voltages should i decrease & in what order?

i've also clocked my GPU (280x) to 1200mhz & 1700mhz

current fire strike extreme results are showing a 230pts increase vs STOC

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a b K Overclocking
November 6, 2013 5:47:35 PM

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29 (-0.010)
CPU Core Voltage= fixed
CPU Ring Voltage = 1.24 (-0.010)
VCCIN Voltage = 1.9 (-0.2)

running @ 73 degree's @ 10 x prime95 tests and 25 deg at idle.

if i drop to 1.28 core and 1.23 ring i get the old x124 BSOD

still pretty hot?

what do you suggest i do from here?
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a c 159 K Overclocking
a c 98 à CPUs
November 7, 2013 6:14:54 AM

Jonathan Cave said:
CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29 (-0.010)
CPU Core Voltage= fixed
CPU Ring Voltage = 1.24 (-0.010)
VCCIN Voltage = 1.9 (-0.2)

running @ 73 degree's @ 10 x prime95 tests and 25 deg at idle.

if i drop to 1.28 core and 1.23 ring i get the old x124 BSOD

still pretty hot?

what do you suggest i do from here?


Try those settings again, except for VCCIN, which I would set back to your original value of 1.90 v.

Yogi

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a b K Overclocking
November 7, 2013 6:33:51 AM

Hi Yogi,

1.9 is my current setting. i.e. i haven't taken another 0.2 off to = 1.7

in other words my system is unstable at:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.28
CPU Core Voltage= fixed
CPU Ring Voltage = 1.23
VCCIN Voltage = 1.9

but stable at:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= fixed
CPU Ring Voltage = 1.24
VCCIN Voltage = 1.9
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a c 159 K Overclocking
a c 98 à CPUs
November 7, 2013 6:41:01 AM

Jonathan Cave said:
Hi Yogi,

1.9 is my current setting. i.e. i haven't taken another 0.2 off to = 1.7

in other words my system is unstable at:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.28
CPU Core Voltage= fixed
CPU Ring Voltage = 1.23
VCCIN Voltage = 1.9

but stable at:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= fixed
CPU Ring Voltage = 1.24
VCCIN Voltage = 1.9


Try Vcore at 1.295 and do you have Ring Voltage on Override? If not, change it to Override.

Yogi

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November 7, 2013 6:51:06 AM

Stable:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= Override
CPU Ring Voltage = 1.24
CPU Ring Voltage = Override
VCCIN Voltage = 1.9

Why do you want me to increase the vCore from 1.290 to 1.295 Yogi? forgive me but i thought the plan was to reduce the voltage as i know it works Stable at 1.3 & 1.29?
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a c 159 K Overclocking
a c 98 à CPUs
November 7, 2013 7:00:44 AM

Jonathan Cave said:
CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= Override (sorry i said fixed)
CPU Ring Voltage = 1.24
VCCIN Voltage = 1.9

Why do you want me to increase the vCore from 1.290 to 1.295 Yogi? forrgive me but i thought the plan was to reduce the voltage ?


I'm sorry. I misread your post. I thought that you were unstable at 1.290 v.

I would keep what settings you have for 4.4 GHz. You MAY want to try 4.5 but 4.4 is a nice OC.

Yogi

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a b K Overclocking
November 7, 2013 7:14:40 AM

Y0GI said:
Jonathan Cave said:
CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= Override (sorry i said fixed)
CPU Ring Voltage = 1.24
VCCIN Voltage = 1.9

Why do you want me to increase the vCore from 1.290 to 1.295 Yogi? forrgive me but i thought the plan was to reduce the voltage ?


I'm sorry. I misread your post. I thought that you were unstable at 1.290 v.

I would keep what settings you have for 4.4 GHz. You MAY want to try 4.5 but 4.4 is a nice OC.

Yogi



Thanks for you help Yogi!

Q: Should i try and reduce the Voltage by 0.001 to find stability at the lowest voltage @ 4.4GHz?

Q: If i wanted to see what clock my system is capable of (maximum performance and temps < 80 degrees) what CPU & Ring Ratio's should i try combined with which CPU & Ring voltages?

Q: Can i now put CPU Core / Ring back to adaptive to take advantage of the CPU power states @ 4.4 i.e. will it be stable on adaptive?

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November 7, 2013 7:24:55 AM

Jonathan Cave said:
Y0GI said:
Jonathan Cave said:
CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.29
CPU Core Voltage= Override (sorry i said fixed)
CPU Ring Voltage = 1.24
VCCIN Voltage = 1.9

Why do you want me to increase the vCore from 1.290 to 1.295 Yogi? forrgive me but i thought the plan was to reduce the voltage ?


I'm sorry. I misread your post. I thought that you were unstable at 1.290 v.

I would keep what settings you have for 4.4 GHz. You MAY want to try 4.5 but 4.4 is a nice OC.

Yogi



Thanks for you help Yogi!

Q: Should i try and reduce the Voltage by 0.001 to find stability at the lowest voltage @ 4.4GHz?

Q: If i wanted to see what clock my system is capable of (maximum performance and temps < 80 degrees) what CPU & Ring Ratio's should i try combined with which CPU & Ring voltages?

Q: Can i now put CPU Core / Ring back to adaptive to take advantage of the CPU power states @ 4.4 i.e. will it be stable on adaptive?



1) Yes you can but I would use a larger step, like 0.005 v.

2) First, 90*C is a safe limit for Haswell while stress testing. Maximum safe voltages are 1.300 v. Vcore and 1.200 v. Vring. As far as maximum ratios, you just have to find them through trial and error.

3) Yes you can go back to Adaptive. Also, be sure the your Power Option in Windows is set to "Balanced" for maximum flexibility.

Yogi

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a b K Overclocking
November 7, 2013 7:37:10 AM

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.285
CPU Core Voltage= Override
CPU Ring Voltage = 1.235
CPU Core Voltage= Override
VCCIN Voltage = 1.9

All is stable. @ 71 Deg.

You mention that maximum safe voltages for Vring is 1.2 however i'm running at 1.235 :( 

i'm trying Vring @ 1.2 now ill post the results.

should i try increasing the ring ratio ?
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November 7, 2013 7:43:53 AM

Jonathan Cave said:
CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.285
CPU Core Voltage= Override
CPU Ring Voltage = 1.235
CPU Core Voltage= Override
VCCIN Voltage = 1.9

All is stable. @ 71 Deg.

You mention that maximum safe voltages for Vring is 1.2 however i'm running at 1.235 :( 

i'm trying Vring @ 1.2 now ill post the results.

should i try increasing the ring ratio ?


You can, but it may cause instability. For max performance you want Ring Ratio = CPU Ratio, but this does not always yield stable results. Again, trial and error testing.

Yogi

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November 7, 2013 8:06:18 AM

based on that logic its best to bring down the CPU voltage in an effort to reduce the gap for the Ring voltage?.

i'm trying CPU 1.28 & Ring 1.2 at the moment in prime95. seems to be holding up. i'll try over the next few hours to lower the CPU voltage to its minimum level to sustain 4.4ghz then change it from override to adaptive once i've achieved the lowest CPU Voltage.

again thanks for all your help mate its genuinely appreciated.

i notice you have a very similar set up to me, what are you running to get 4.7!?
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November 7, 2013 8:26:08 AM

Jonathan Cave said:
based on that logic its best to bring down the CPU voltage in an effort to reduce the gap for the Ring voltage?.


I either don't understand what you're asking or you misunderstood what I recommended. I didn't say that Ring voltage should = CPU voltage, just that for max performance, Ring RATIO should = CPU RATIO

Jonathan Cave said:
i'm trying CPU 1.28 & Ring 1.2 at the moment in prime95. seems to be holding up. i'll try over the next few hours to lower the CPU voltage to its minimum level to sustain 4.4ghz then change it from override to adaptive once i've achieved the lowest CPU Voltage.

again thanks for all your help mate its genuinely appreciated.

i notice you have a very similar set up to me, what are you running to get 4.7!?


You're quite welcome!

I've tweaked so many settings so many times that I'm not sure what all of my settings are anymore, but basically:
Vcore = 1.300v.
Vring = 1.200 v., Override mode
Ring Ratio = 40
Vmem = 1.500v. (this helped a lot)
Memory at 1600 MHz XMP Profile 2
And a few others that I can't remember.

Yogi


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November 7, 2013 8:39:59 AM

i stand corrected it seems my CPU isnt stable at 1.280 - just crashed after getting to 20th test on prime95, trying 1.285 now.

i haven't adjusted my memory ... yet....

it has CAS timings of 9-9-9-27 however its running at 11-11-11-28 as its set to auto in the bios.

when i set it to XMP profile 1 it messes with my CPU overclock and i get BSOD whereas if its on auto its fine.
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November 7, 2013 8:45:40 AM

Jonathan Cave said:
i stand corrected it seems my CPU isnt stable at 1.280 - just crashed after getting to 20th test on prime95, trying 1.285 now.

i haven't adjusted my memory ... yet....

it has CAS timings of 9-9-9-27 however its running at 11-11-11-28 as its set to auto in the bios.

when i set it to XMP profile 1 it messes with my CPU overclock and i get BSOD whereas if its on auto its fine.


Have you tried Profile #2 yet? On mine it shifted the voltage from a stock 1.35 to 1.50 which helped my OC a lot.

Yogi

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a b K Overclocking
November 7, 2013 9:01:21 AM

my DDR is 1.5-1.65, i think there's only 1 profile option there in the bios.

Prime95 reset itself after 35 tests ! damn! back to 1.290? or should i increase the ring V higher than 1.2?
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November 7, 2013 9:07:20 AM

Jonathan Cave said:
my DDR is 1.5-1.65, i think there's only 1 profile option there in the bios.

Prime95 reset itself after 35 tests ! damn! back to 1.290? or should i increase the ring V higher than 1.2?


Leave Vring at 1.200 v., change Vcore to 1.290v. and try again.

Have you set VCCIN as recommended in Intel God's thread? 1.9 - 2.1 v.

Yogi

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a b K Overclocking
November 7, 2013 9:22:04 AM

can only get stable for 40 mins using prime95 @ 1.29v the VCCIN set at 1.9. don't know what to do?
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a b K Overclocking
November 7, 2013 12:22:29 PM

i've changed the VCCIN to 2.0v and its looking better i'll confirm in 30 mins. if stable i'm going to attempt reducing the CPU voltage by 0.05 and see what happens.

Why is the 4th core always cooler than the rest?
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a b K Overclocking
November 7, 2013 1:09:03 PM

i'm back where i started:

[Thu Nov 07 23:24:05 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Fri Nov 08 00:26:18 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Fri Nov 08 00:41:40 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
[Fri Nov 08 00:56:47 2013]
Self-test 768K passed!

BSOD @ x124 on 768k.

This has me baffled....

i used:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.300
CPU Core Voltage= Override
CPU Ring Voltage = 1.250
CPU Core Voltage= Override
VCCIN Voltage = 2.1

What next?
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a b K Overclocking
November 10, 2013 2:57:23 AM

what other settings do i need to change to get this beast stable?
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a c 159 K Overclocking
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November 10, 2013 8:10:05 AM

Jonathan Cave said:
i'm back where i started:

[Thu Nov 07 23:24:05 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Fri Nov 08 00:26:18 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Fri Nov 08 00:41:40 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
[Fri Nov 08 00:56:47 2013]
Self-test 768K passed!

BSOD @ x124 on 768k.

This has me baffled....

i used:

CPU Ratio = 44
Ring Ratio = 35
CPU Core Voltage 1.300
CPU Core Voltage= Override
CPU Ring Voltage = 1.250
CPU Core Voltage= Override
VCCIN Voltage = 2.1

What next?


Sorry for not responding. Tom's quit sending me e-mail updates.

It looks like you have maxed out your CPU settings. The only other thing that I can recommend is to increase memory voltage. What is your memory rated at?

Yogi

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a b K Overclocking
November 10, 2013 10:00:41 AM

CAS 9-9-9-27 1.5v - 1.65v

so i got a crappy CPU?
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a b K Overclocking
November 10, 2013 10:18:09 AM

i've just done an IBT and got worried about the temps after 2 mins!

i know IBT sends temps surging higher than Prime95. - it didnt crash though...



i may just try and go back to a 4.2ghz clock at lower temps.

any thoughts on settings to try?
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November 10, 2013 10:31:14 AM

Set your memory voltage at 1.650 v. and try Prime95 again. I'd avoid IBT at those temps!

Yogi
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November 10, 2013 11:08:20 AM

Ok ill give 4.4hgz a go with voltage at 1.65 for the ram and post back in an hour.

Thanks again for the help yogi
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November 10, 2013 11:32:14 AM

Jonathan Cave said:
Ok ill give 4.4hgz a go with voltage at 1.65 for the ram and post back in an hour.

Thanks again for the help yogi


You're welcome, Jonathan!

Good luck!

Yogi

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November 10, 2013 11:45:44 AM

I've just finished testing my previous 4.2ghz clock and its passed 1hr of Prime95:

[Sun Nov 10 18:42:11 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Sun Nov 10 18:57:34 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
[Sun Nov 10 19:12:48 2013]
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
[Sun Nov 10 19:27:53 2013]
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
[Sun Nov 10 19:43:13 2013]
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!

now to figure out how to volt up my Ram in the bios...
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November 10, 2013 3:28:30 PM

i think i'm going to stick with the 4.2ghz clock.

it seems stable with leaving VCCIN on Auto.

Any advice on fine tuning this to the lowest voltage?

whats all this about offset by 0.001 ?
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November 10, 2013 4:54:01 PM

Jonathan Cave said:
i think i'm going to stick with the 4.2ghz clock.

it seems stable with leaving VCCIN on Auto.

Any advice on fine tuning this to the lowest voltage?

whats all this about offset by 0.001 ?


I think that you have it pretty well "dialed in". I would keep what you've got. I don't fool with Offsets, I leave them on Auto.

Yogi

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November 10, 2013 5:58:09 PM

So... on the whole I've got 2 x SAFE/Stable overclocks and 1... strange one!

4.0 @ CPU Ratio 44 (STOC voltages)
4.2 @ 1.2v / 1.15
4.4 @ 1.3v / 1.25 (the strange one)

i'll leave it at that i think Yogi. Kudos for helping mate.
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November 11, 2013 7:16:33 AM

Jonathan Cave said:
So... on the whole I've got 2 x SAFE/Stable overclocks and 1... strange one!

4.0 @ CPU Ratio 44 (STOC voltages)
4.2 @ 1.2v / 1.15
4.4 @ 1.3v / 1.25 (the strange one)

i'll leave it at that i think Yogi. Kudos for helping mate.


Glad to be able to help. Good luck with it!

Yogi

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November 14, 2013 10:25:24 AM

Hi Yogi,

i've ran the following settings and it seems i have a stable o/c @ 4.4Ghz @ 79 Deg for 2hrs 40 mins.

CPU Ratio: Fixed Mode.
CPU Ratio = 44
Ring Ratio = 40
CPU Core Voltage 1.300
CPU Core Voltage= Override
CPU Ring Voltage = 1.250
CPU Ring Voltage = Override
VCCIN Voltage = 2.1
DRAM Frequency : 1600

i can't go above 4.4ghz without BSOD , and not prepared to increase the voltage higher than 1.3v

[Thu Nov 14 15:21:33 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Thu Nov 14 15:26:41 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
[Thu Nov 14 15:31:42 2013]
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
[Thu Nov 14 15:36:46 2013]
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
[Thu Nov 14 15:42:16 2013]
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!
[Thu Nov 14 15:47:19 2013]
Self-test 448K passed!
Self-test 448K passed!
Self-test 448K passed!
Self-test 448K passed!
[Thu Nov 14 15:52:53 2013]
Self-test 384K passed!
Self-test 384K passed!
Self-test 384K passed!
Self-test 384K passed!
[Thu Nov 14 15:58:17 2013]
Self-test 320K passed!
Self-test 320K passed!
Self-test 320K passed!
Self-test 320K passed!
[Thu Nov 14 16:03:35 2013]
Self-test 256K passed!
Self-test 256K passed!
Self-test 256K passed!
Self-test 256K passed!
[Thu Nov 14 16:08:52 2013]
Self-test 224K passed!
Self-test 224K passed!
Self-test 224K passed!
Self-test 224K passed!
[Thu Nov 14 16:14:12 2013]
Self-test 192K passed!
Self-test 192K passed!
Self-test 192K passed!
Self-test 192K passed!
[Thu Nov 14 16:19:34 2013]
Self-test 160K passed!
Self-test 160K passed!
Self-test 160K passed!
Self-test 160K passed!
[Thu Nov 14 16:24:45 2013]
Self-test 128K passed!
Self-test 128K passed!
Self-test 128K passed!
Self-test 128K passed!
[Thu Nov 14 16:30:14 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
[Thu Nov 14 16:35:18 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
[Thu Nov 14 16:40:22 2013]
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
Self-test 640K passed!
[Thu Nov 14 16:46:25 2013]
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
Self-test 512K passed!
[Thu Nov 14 16:51:56 2013]
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!
Self-test 448K passed!
[Thu Nov 14 16:57:05 2013]
Self-test 448K passed!
Self-test 448K passed!
Self-test 448K passed!
Self-test 384K passed!
[Thu Nov 14 17:02:48 2013]
Self-test 384K passed!
Self-test 384K passed!
Self-test 384K passed!
Self-test 320K passed!
[Thu Nov 14 17:08:04 2013]
Self-test 320K passed!
Self-test 320K passed!
Self-test 320K passed!
Self-test 256K passed!
[Thu Nov 14 17:13:14 2013]
Self-test 256K passed!
Self-test 256K passed!
Self-test 256K passed!
Self-test 224K passed!
[Thu Nov 14 17:18:31 2013]
Self-test 224K passed!
Self-test 224K passed!
Self-test 224K passed!
Self-test 192K passed!
[Thu Nov 14 17:23:42 2013]
Self-test 192K passed!
Self-test 192K passed!
Self-test 192K passed!
Self-test 160K passed!
[Thu Nov 14 17:29:08 2013]
Self-test 160K passed!
Self-test 160K passed!
Self-test 160K passed!
Self-test 128K passed!
[Thu Nov 14 17:34:32 2013]
Self-test 128K passed!
Self-test 128K passed!
Self-test 128K passed!
Self-test 1024K passed!
[Thu Nov 14 17:39:57 2013]
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 1024K passed!
Self-test 896K passed!
[Thu Nov 14 17:45:36 2013]
Self-test 896K passed!
Self-test 896K passed!
Self-test 896K passed!
Self-test 768K passed!
[Thu Nov 14 17:51:14 2013]
Self-test 768K passed!
Self-test 768K passed!
Self-test 768K passed!
Self-test 640K passed!
[Thu Nov 14 17:56:48 2013]
Self-test 640K passed!
Self-test 640K passed!
Self-test 640K passed!
Self-test 512K passed!
[Thu Nov 14 18:02:20 2013]
Self-test 512K passed!
Self-test 512K passed!
Self-test 512K passed!
Self-test 448K passed!
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November 14, 2013 10:59:51 AM

Looks good to me, Jonathan! Congrats!

Yogi
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November 14, 2013 11:05:35 AM

i need to check if it will stay stable with 'dynamic' rather than 'fixed' on the CPU Ratio. checking now...

Wish i had a better chip, i'm jealous of you 4.7Ghz!
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November 14, 2013 11:27:53 AM

Jonathan Cave said:
i need to check if it will stay stable with 'dynamic' rather than 'fixed' on the CPU Ratio. checking now...

Wish i had a better chip, i'm jealous of you 4.7Ghz!


Dynamic should not be a problem.

I had to change my sig. I found that at 4.7 GHz my system would only run Prime95 for about 20 minutes and then crash. I set it down to 4.6 and it runs Prime95 for hours.

Yogi

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November 14, 2013 11:28:55 AM

I don't consider P95 a measure of stability on the Haswell chips, but it's a decent quick test. Run something with AVX Linpack and that will tell you whether you are stable (and if your cooling is sufficient) or not.

Also, I was under the impression that the IMC on these chips was very sensitive to voltage and that upping your DRAM voltage much pat 1.5v was not safe.
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November 14, 2013 11:34:52 AM

my Ram is 1.5 - 1.65v STOC i've not o/clocked it.

i'll give linpack a try after this run. what's AVX?
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November 14, 2013 11:38:54 AM

Napoleon85 said:
I don't consider P95 a measure of stability on the Haswell chips, but it's a decent quick test. Run something with AVX Linpack and that will tell you whether you are stable (and if your cooling is sufficient) or not.

Also, I was under the impression that the IMC on these chips was very sensitive to voltage and that upping your DRAM voltage much pat 1.5v was not safe.


The latest Prime95 DOES have AVX instructions: http://www.mersenne.org/freesoft/

AFAIK, a lot of ppl are running just fine with memory voltage at 1.65v. on Haswell. I have found that Haswell is unstable with too LITTLE memory voltage.

Yogi

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November 14, 2013 11:43:26 AM

Good news!

1hr P95 passed on dynamic!

i've heard Linpack and IBT are serious for running temps high!
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November 14, 2013 11:45:23 AM

Jonathan Cave said:
my Ram is 1.5 - 1.65v STOC i've not o/clocked it.

i'll give linpack a try after this run. what's AVX?


AVX is "Advanced Vector Extensions". Something Intel added to Haswell: http://en.wikipedia.org/wiki/Advanced_Vector_Extensions

Yogi

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