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Help me Stablize 950 @ 4.0 ghz

post #1 of 14
Thread Starter 
Hey guys, here's what I've done. I ran memtest86+ for 10 hours before any OCing to make sure my memory is okay.

I then OC-ed to 4.0ghz and ran OCCT on large file size for 2hours - passed.
I ran Prime95 for 6hours and 18minutes - BSOD 0x3B and the driver that caused it was ntoskrnl.exe.

Here are my settings, what do you guys suggest I do from here?

Turbo Tech , C1E, EIST all disabled.

CPU clock ratio - 23x
QPI ratio - 36x
Uncore ratio - 16
BCLK - 175
Dram Freq - 1400mhz (8x)
PCI express frequency - 100
CPU clock drive - 800mv
PCI-e clock drive - 900mv
LLC - level 2
Vcore in BIOS - 1.281
QPI/VTT - 1.33
CPU PLL - 1.88
IOH Core - 1.2
ICH Core - 1.2
DRAM Voltage - 1.640
Performance Enhance - Turbo

What settings should I be tweaking from this point on? I was thinking maybe bump up vcore by a notch and just leave it running for the night. Thanks.
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post #2 of 14
try adding more on the vcore do like 1.32v..and just use LLC level 1..
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post #3 of 14
Thread Starter 
My BIOS reads 1.281 but my CPU-z reads 1.264, i'm not sure what that's all about. I will bump vcore up a little, but isn't 1.32 too big of a jump at this point??
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post #4 of 14
its just small..it will droop you til 1.3v..so its just ok with that range..

well no pain no glory as they say..
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post #5 of 14
Thread Starter 
What is the difference between level 1 and level 2 LCC - does level one lower it a little less than level 2? I was always told that LLC caused instability..unless I remembered that wrong.
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post #6 of 14
i am not into that much of a detail reagarding the LLC levels coz i only have 1 on mine.. eek

though i see some say that Level 1 is appropriate than level 2..so just use level 1 with my suggestion..also lower your IOH core and ICH to 1.18v sometimes more can hurt rather than it can do good..and as i can see you are running only a single card solution..you are opt to add 0.05v or more when you have a Xfire or an SLI setup..
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post #7 of 14
Thread Starter 
Every single one of my BSODS on this chip as well as my other i7 920 has been because of the driver ntoskrnl.exe. I'm not sure if this means anything. I'm going to up vcore and lower IOH ICH to 1.18 and see how that helps......will run p95 all through the night. Any more tips are welcome and appreciated
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post #8 of 14
ntoskernel crashes??you need a clean windows setup..

drivers might be messed up..

if you get BSOD with error 124 you need to add VTT for it..
if you get BSOD with error 101 you need ot add CPU Vcore for it..
if you get BSOD with error 0C it either means the memory timings are wrong or the memory settings are unstable..

a regular 920/950 chip gets 4ghz with around 1.3v good binned chips do it for less voltages..
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post #9 of 14
Thread Starter 
Im thinking of reinstalling windows to be honest. My recent crashes have all been 0x3B, Ntoskrnl and System Service Exception msgs. Need to get my windows 7 disk from home though. I haven't gotten any of the msgs u mentioned above.
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post #10 of 14
if you dont get the messages mentioned..well you either have a corrupted OS or Drivers on your system causing you to crash on those settings you mentioned..either way try my suggestions if they help you out..
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