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ASUS Crosshair IV & 1090t Overclocking Problem.

Last response: in Overclocking
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March 20, 2011 6:03:25 AM

So i've been at it for 3 days now and i have no clue what is stopping me from overclocking.

System Spec:

MOBO: Asus Crosshair IV

CPU: AMD Phenom II x6 1090t

GPU: ASUS 6950 2GB

RAM: G.Skill 8GB (2x4GB) DDR3 1333

PSU: 850 Thermaltake Blackwidow

CPU Cooler: Thermaltake Frio

Case: HAF 932

HDD: 1 TB Western Digital blue 6gb/s



BIOS INFOMATION:

Spoiler
Asus Crosshair IV Extreme
Extreme Tweaker
CPU Level Up.......................: [Auto]
A1 Overclock Tuner.................: [Manual]
CPU Ratio..........................: 20
AMD Core Technology................: [Disabled]
AMD Turbo CORE Ratio...............: N/A
CPU Bus Frequency..................: 200
PCIE Bus Frequency.................: 100
DRAM Frequency.....................:1333
CPU/NB Frequency...................:2800
HT Link Speed......................:2400
**********EXTREME ENGINE************
PWM Phase Control..................: [Full Phase]
CPU Voltage OCP....................: [Enabled]
CPU PWM Frequency..................: [Auto]
CPU Load Line Calibtatiom..........: [Auto]
CPU/NB Load Line Calibtatiom.......: [Auto]
CPU/NB Voltage OCP.................: [Enabled]
*******Please key in numbers********
Extreme OV.........................: [Disabled]
CPU & NB Voltage Mode..............: [Manual]
CPU Voltage........................: 1.45000v
CPU/NB Voltage.....................: 1.30000v
CPU VDDA...........................: 2.8125v
DRAM Voltage.......................: 1.5875v
HT Voltage.........................: 1.2875v
NB Voltage.........................: 1.300v
NB 1.8 Voltage.....................: 1.802v
SB 1.1.............................: 1.2625v
VDDR...............................: 1.205755v
VDDPCIE............................: 1.2455v
DRAM CTRL REF Volts CHA............: [Auto]
DRAM DATA REF Volts CHA...........: [Auto]
DRAM CTRL REF Volts CHB............: [Auto]
DRAM DATA REF Volts CHB...........: [Auto]
************************************
CPU Spread Spectrum................: [Disabled]
PCIE Spread Spectrum...............: [Disabled]
____________________________________
Advanced Menu
<CPU Settings Sub Menu>
Microcode Updation.................: [Enabled]
Secure Virtual Machine Mode........: [Enabled]
Cool 'n' Quiet.....................: [Disabled]
C1E Support........................: [Disabled]
ASUS Core Unlocker.................: [Disabled]
CPU Core Activation................: [Auto]
2nd core...........................: N/A
3rd core...........................: N/A
4th core...........................: N/A
5th core...........................: N/A
6th core...........................: N/A
<DRAM Controller Information Sub Menu>
Channel Interleaving...............: [Auto]
MemClk Tristate C3/ATLVID..........: [Disabled]
Memory Hole Remapping..............: [Enabled]
DCT Unganged Mode..................: [Always]
Power Down Enable..................: [Disabled]


Even with all this, double checked and everything Volts and what not. My computer starts up perfectly but then after not even 5 mins with Prime 95. It Crashes. Boom, Blue Screen,


However if i put the CPU Ratio to 19.5 just 0.5 below, @ 3.9GHz it works flawlessly.

Am I doing something wrong? is there something wrong with my volts or Ratio?

Feel Free to ask any questions or leave comments that apply to the thread.

Thank you.
March 23, 2012 8:57:23 PM

i have same exact hardware with 1gb 6950, i think i was able to reach those settings. Currently I have a 100% stable 4.1Ghz, so you can always do what I did:

overclock ai: Manual
Ratio: 20
Bus:205
Ram speed: select closest to rated speed
Extreme OverVoltage: Enable
Mode: Manual
CPU:1.40
DRAM:1.75

Everything else on that page is left at default, spread spectrums disabled. Prime 95 has been running for over 6 hours now, stable core temp of 63. Can someone post their settings if they can achieve higher?
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