Help with overclock

kingshaun2k · 24 Jan 2011 at 09:19

Trying to oc my i7 930 to 3.8Ghz then ran Linx and it stopped due to an error 4mins in. How do i know what caused the error and could someone maybe help me tweak the below settings, Thanks.

My Specs are:-

- Intel i7 2.8Ghz @ 3.8Ghz
- 6GB Ram
- Asus P6TD
- Ati 5970
- Windows 7 64bit
- Titan Fenrir Cooler

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OVerclock Settings

Ai Overclock Tuner.....................[Manual]
CPU Ratio Setting......................[21.0]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Xtreme Phase Full Power Mode...........[Enabled]
BCLK Frequency.........................[181]
PCIE Frequency.........................[100]
DRAM Frequency.........................[DDR3-1451MHz]
UCLK Frequency.........................[2903MHz]
QPI Link Data Rate.....................[Auto]

CPU Voltage Control....................[Manual]
CPU Voltage............................[1.23125]
CPU PLL Voltage........................[1.80]
QPI/DRAM Core Voltage..................[1.22500]
IOH Voltage............................[1.14]
IOH PCIE Voltage.......................[1.50]
ICH Voltage............................[1.20]
ICH PCIE Voltage.......................[1.50]
DRAM Bus Voltage.......................[1.64]
DRAM DATA REF Voltage on CHA...........[Auto]
DRAM CTRL REF Voltage on CHA...........[Auto]
DRAM DATA REF Voltage on CHB...........[Auto]
DRAM CTRL REF Voltage on CHB...........[Auto]
DRAM DATA REF Voltage on CHC...........[Auto]
DRAM CTRL REF Voltage on CHC...........[Auto]

Load-Line Calibration..................[Enabled]
CPU Differential Amplitude.............[800mV]
CPU Clock Skew.........................[Delay 300ps]
CPU Spread Spectrum....................[Disabled]
IOH Clock Skew.........................[Auto]
PCIE Spread Spectrum...................[Disabled]

C1E Support............................[Disabled]
Hardware Prefetcher....................[Enabled]
Adjacent Cache Line Prefetch...........[Enabled]
Intel(r) Virtualization Tech...........[Disabled]
CPU TM Function........................[Enabled]
Execute Disable Bit....................[Enabled]
Intel(r) HT Technology.................[Enabled]
Active Processor Cores.................[All]
A20M...................................[Disabled]
Intel(r) SpeedStep(tm) Tech............[Disabled]
Intel(r) C-STATE Tech..................[Disabled]

bifday2k · 24 Jan 2011 at 09:46

Id say give the vcore and qpi a notch up, those 2 are generally the things that need changing if stress testing fails.

Blue160 · 24 Jan 2011 at 09:47

You could probably do with some more core voltage.

Take the base clock back down to a level where it's stable, then increase in increments of 5, testing for stability each time. When it becomes unstable give it a little bit more core voltage, and try again. Repeat as necessary.

kingshaun2k · 24 Jan 2011 at 09:52

Cheers. I increased it from 1.2 to 1.23125 and its been running for 20 mins now, so far so good.

Blue160 · 24 Jan 2011 at 09:56

Good stuff. Make sure you keep an eye on temperatures when increasing the voltage. A little extra can make things significantly hotter.

kingshaun2k · 24 Jan 2011 at 10:13

Hottest temps so far are:- 68c 65c 65c 65c and its ran 10 / 20 so far. Is that ok?

bifday2k · 24 Jan 2011 at 10:16

yup totally fine, your ok up to the mid 80's so don't worry. Keep it running for a good bit longer though, the most annoying thing about overclocking is the time it takes to test for stability lol.

kingshaun2k · 24 Jan 2011 at 10:23

So your saying i should maybe run it longer than 20 runs of linx next time if this one passes? Should i run prime 95 overnight maybe?

bifday2k · 24 Jan 2011 at 10:40

If using Linx set it to all memory, and 20 times to run.. Thats generally a good indication the cpu is fine. Now as before if an error pops up, or crashes, generally just notch up vcore/qpi again, and restart testing.

Prime (blend test) is best to check that cpu/mobo/memory are all stable, 8 hours is the general consensus for full stablilty. So yeh an over night run of that is good to do.

kingshaun2k · 24 Jan 2011 at 10:44

Thanks for the tips so far

bifday2k · 24 Jan 2011 at 10:48

No probs, glad to help, hope the testing goes well.

kingshaun2k · 24 Jan 2011 at 16:23

Well it.passed 20 runs of LinX without fail so i'll try it using all the memory then give Prime95 a good run and see how it all goes! If they dont go over 70 do you think i should try to hit 3.9Ghz or 4.0Ghz+

bifday2k · 24 Jan 2011 at 17:00

yeh if its stable at that speed in prime, then shoot for 4ghz (200 x 20) may need abit more vcore though, but should be fine.

setter · 24 Jan 2011 at 17:53

bifday2k said:
If using Linx set it to all memory, and 20 times to run.. Thats generally a good indication the cpu is fine. Now as before if an error pops up, or crashes, generally just notch up vcore/qpi again, and restart testing.

Testing mine again yesterday with LinX all memory, failing on the second test, strangely though its passed 20 runs of LinX before.

Previous run

kingshaun2k · 24 Jan 2011 at 18:43

Ran it for a second time using all memory and its passed again. Max temps were 62c 60c 63c and 62c. Might try for 4Ghz at the weekend if i get time.

bifday2k · 24 Jan 2011 at 21:11

Yup your good to go for 4ghz no probs, but bare in mind that the vcore/Qpi may need to be raised quite a bit, so temps may and most probably will hit 70+.