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Core i7 2700k Overclocking: Are these results and settings acceptable?

Last response: in Overclocking
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March 26, 2012 4:55:19 PM

EDIT: Temperatures Updated

I am new to overclocking the Core i7 2700k, and I am looking for your input.
First of all, my system specs:

Motherboard: ASRock Z68 Extreme7 Gen3
CPU: Intel Core i7 2700k
Cooling: Corsair H80
Memory: GSkill Sniper DDR3 1866 8GB 9-10-9-28 (Default)
PSU: Antec True Power Quattro 850W
GPU: 2x Sapphire HD 6950 Dirt 3 Edition Unlocked to 6970 with Dual Bios Crossfire
HDD: Raid 0 Intel SSD 40GB x3 (750MB/s Read Speed) Haven't tested write speed.

I hope I did not miss anything:

I have achieved 4.6GHz @ 1.27v max Vcore under load. I have not fully tested Temps under 1.27v. However, here are the temps I had before I adjusted Offset Voltage

EDIT: UPDATED TEMPERATURES:

Idle:
Core1 - 29
Core2 - 27
Core 3 - 23
Core 4 - 23

Load: Intel Burn Test Stress Level Standard

Core1 - 59
Core2 - 64
Core3 - 62
Core4 - 59

Load: Intel Burn Test Stress Level Very High

Core1 - 61
Core2 - 67
Core3 - 66
Core4 - 62

(Default Offset Voltage is +0.075)
Load Vcore under these settings is 1.36v-1.40v (Way too high for my liking, heh)

Temperatures:
30-35 Idle
66 Load under Prime 95 (8 hours)
72 Intel Burn Test (Stress Level: Standard) 10 runs
74 Intel Burn Test (Stress Level: High) 10 runs
77 Intel Burn Test (Stress Level: Very High) 10 runs

Bios Settings:

OC Tweaker:

Load Optimized CPU OC Setting: Turbo 4.6GHz
Internal PLL Overvoltage: Disabled
Intel Speedstep Technology: Disabled
Spread Spectrum: Disabled
Cpu Core Voltage: Offset Mode +0.005
CPU Load Line Calibration: Level 5 (100%)
Every other voltage setting: Auto

DRam Configuration:

Load XMP Setting: Auto
DRam Frequency: DDR3 - 1866
Timings: 9-10-9-28

Advanced Settings: CPU Configuration

Intel Hyper Threading Technology: Enabled
Enhanced Halt State (C1E): Disabled
CPU C3 State Support: Disabled
CPU C6 State Support: Enabled
Package C State Support: Auto

Any setting not mentioned is set at Auto or Default.

I did a lot of research before overclocking, since I just built this rig with the Core i7 2700k. In some places it says to disable C1E, C3, and C6. However, I chose to keep C6 on because:

C6 Disabled: CPU-Z

Idle: Vcore 1.32v constant, Frequency 4.6Ghz
Load: Vcore 1.27v Frequency 4.6GHz

C6 Enabled: CPU-Z

Idle: 0.9v to 1.0v Vcore, Frequency 1.6GHz
Load: 1.27Vcore, Frequency 4.6GHz

C6 Enabled rises my idle temps a couple degrees, due to the higher idle Vcore.

Are my settings ok?
Are my temperatures ok?
Is my Vcore too high? Too low?
What should I, or shouldn't I, change?
How do my results compare (4.6Ghz 1.27v)? What is the average?
I want to overclock higher, but I would love the input of well, those that know more than me.
Thank you very much for your responses and suggestions!

I will update with my temperatures @ 1.27v.
March 26, 2012 5:17:42 PM

Extremely acceptable intel processors can get even hotter then that and still be fine, If you were running an AMD processor youd be in the danger zone for sure
a b K Overclocking
March 26, 2012 6:12:46 PM

Seems fine but report back with updated temps
Related resources
April 2, 2012 5:41:43 AM

I will be honest with you, 1.27v will probably not be stable at 4.6GHz. I have it good at 1.30v but 1.27v would BSoD. It would Prime95 fine but BSoD when using it.
a b å Intel
a c 149 K Overclocking
April 2, 2012 6:12:21 AM

1.27? Lucky chip? For me to get a stable 4.6ghz oc on my 2600k, I have to use 1.37v.
April 4, 2012 4:18:32 AM

jimmysmitty said:
I will be honest with you, 1.27v will probably not be stable at 4.6GHz. I have it good at 1.30v but 1.27v would BSoD. It would Prime95 fine but BSoD when using it.

You were correct, 1.27v was perfect for Prime but it Bsod after a couple of hours of normal use.

As of now, it's stable 14 hrs Prime and 17hrs of continuous regular use at 1.29v
a b K Overclocking
April 4, 2012 1:04:17 PM

Aelemar said:
You were correct, 1.27v was perfect for Prime but it Bsod after a couple of hours of normal use.

As of now, it's stable 14 hrs Prime and 17hrs of continuous regular use at 1.29v


this is normal and don't be surprised if you make it into the 1.3s
April 5, 2012 1:09:59 AM

Aelemar said:
You were correct, 1.27v was perfect for Prime but it Bsod after a couple of hours of normal use.

As of now, it's stable 14 hrs Prime and 17hrs of continuous regular use at 1.29v


Thats great. Other ways of testing are 3DMarks and other benchmarks since they will do random things. When a stress test is runniong, the CPUs branch predictor can kick in and not worry about the part that may cause the crash with too low voltage.

Too bad you don't have an Asus. Not sure if ASRock included Offset Mode, basically it allows your CPU to still lower voltage when idle. Mine at 4.5GHz is running at 0.986v idle and 1.3v under load. Nice drop in temps under load and idle.
a b å Intel
a c 149 K Overclocking
April 5, 2012 1:11:31 AM

They do have offset^^ What is weird with me, is 4.5ghz 1.295v, 4.6 1.375v???
April 5, 2012 3:11:43 AM

amuffin said:
They do have offset^^ What is weird with me, is 4.5ghz 1.295v, 4.6 1.375v???


Thats just how it goes sometimes. My Q6600 would run at 3GHz under stock voltage (stock was 1.325v, ran at 3GHz using 1.25v) and my QX6850 ran at 3.5GHz using 1.275v (same, 1.325v was stock). But my Q6600 wouldn;t do 3.4GHz at stock voltage or higher. Just was not stable.

Sometimes wou will get lucky and get that nice 30%+ OC at a nice low voltage. Then you try to go a few MHz up then bam. Need a crazy voltage or it is just never stable.
April 5, 2012 6:03:45 PM

amuffin said:
They do have offset^^ What is weird with me, is 4.5ghz 1.295v, 4.6 1.375v???


I am using offset for the OC. In fact, I am simply using the Automatic overclocking settings, with some tweaks.
Default is Voltage Auto with Offset of +0.75

I changed the Vcore to Offset mode, and set it at +0.015

With those settings and all else at Auto (Disabled Speedstep, and all C-States except C6)

The CPU runs idle at 1.6GHz @ 0.95v and load 4.6GHz @ 1.29v max.
Vcore fluctuates under full load between 1.288 and 1.29, 1.29v being the maximum it ever goes to.

I am planning to test 4.8GHz soon, also using the "Auto" or "Turbo" overclock.
Also, memory timings and speed was detected wrong by the motherboard, so I set those manually as well.

Last time I tested 4.8GHz it was stable for 4 hours Prime @ 1.34v, but was unable to test further. It did not fail, but it probably would with a longer test.
1.34v seems way too lucky for 4.8GHz, compared to what I have read that others are getting.

But again, maybe I am just lucky XD 1.,29v seems very low for 4.6GHz in comparison with the average.

a b K Overclocking
April 5, 2012 6:11:08 PM

Aelemar said:
I am using offset for the OC. In fact, I am simply using the Automatic overclocking settings, with some tweaks.
Default is Voltage Auto with Offset of +0.75

I changed the Vcore to Offset mode, and set it at +0.015

With those settings and all else at Auto (Disabled Speedstep, and all C-States except C6)

The CPU runs idle at 1.6GHz @ 0.95v and load 4.6GHz @ 1.29v max.
Vcore fluctuates under full load between 1.288 and 1.29, 1.29v being the maximum it ever goes to.

I am planning to test 4.8GHz soon, also using the "Auto" or "Turbo" overclock.
Also, memory timings and speed was detected wrong by the motherboard, so I set those manually as well.

Last time I tested 4.8GHz it was stable for 4 hours Prime @ 1.34v, but was unable to test further. It did not fail, but it probably would with a longer test.
1.34v seems way too lucky for 4.8GHz, compared to what I have read that others are getting.

But again, maybe I am just lucky XD 1.,29v seems very low for 4.6GHz in comparison with the average.


lots of people lie about what they are running or they just never update it after they up the voltages.
July 6, 2012 10:20:26 AM

Hi everybody!

I have 2700k and I'm totally new to overclocking, but finally forced my system to work fine.

I overclocked to 4.8 GHz and set the voltage manually to 1.375 V, but sometimes it switches to 1.384 - 1.392V. when the system needs it.
So it looks nice and stable.
Under Prime 95 i've got temps like 68°, 72°, 75°,70° with the room temp=26°

Now my room temperature raised to 31° and i have core temps a bit higher.

I've heard 2700k's dangerous temp is around 80 so i decided to lower the clock frequency to 4.6GHz. with the voltage 1.33V.
I have lost 10-15 fps in FSX and now i think of getting my CPU back to 4.8.

So what you think is it worth it to get back to previous settings ?
a b K Overclocking
July 6, 2012 11:04:02 AM

JATO said:
Hi everybody!

I have 2700k and I'm totally new to overclocking, but finally forced my system to work fine.

I overclocked to 4.8 GHz and set the voltage manually to 1.375 V, but sometimes it switches to 1.384 - 1.392V. when the system needs it.
So it looks nice and stable.
Under Prime 95 i've got temps like 68°, 72°, 75°,70° with the room temp=26°

Now my room temperature raised to 31° and i have core temps a bit higher.

I've heard 2700k's dangerous temp is around 80 so i decided to lower the clock frequency to 4.6GHz. with the voltage 1.33V.
I have lost 10-15 fps in FSX and now i think of getting my CPU back to 4.8.

So what you think is it worth it to get back to previous settings ?

nothing really needs 4.8 cpmpared tp 4.6. what cooler do you have those are pretty good temps but id try to keep it under 70.
July 12, 2012 2:27:23 PM

Asus P8Z68 Deluxe/GEN3
Intel i7 2700K
Noctua NH-D14
Asus PCI-Ex GeForce GTX 570

that's my rig.

Thanks , i'll stop at 4.6 at least until December. :) 
!