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Can't get stable i7 950

post #1 of 55
Thread Starter 
I had my overclock stable the other day... today i took the motherboard and stuff out to install some new fans and such in my pc.

I had bumped my bclk up and my vcore crashed quickly into IBT. I lowered my bclk and decreased my vcore a bit.. IBT runs for 7 minutes then tells me it has found a critical error but it does not BSOD my system. LinX is also doing this.

hyper threading and turbo mode are off, as well as the other power saving stuff

168x23
vcore - 1.3
dram voltage - 1.66
qpi-1.31

i set the memory multiplier to 8 also and have not touched the timing.

Not sure what to do.. I had a Stable OC at 3.8ghz that could pass 50 IBT passes but now I can't.. i also don't really remember my previous settings
post #2 of 55
Not saying this will work for you, but these settings have given me a stalbe OC for months now.

BCLK: 211
Mult.: 19
Vcore: 1.26

HT off and everything else on auto (except DRAM voltage which is 1.65).
Deathprimus
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Deathprimus
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 4.0Ghz @1.24v ASUS Sabertooth X58 ASUS 69502GB unlocked Corsair XMS3 6GB 
Hard DriveOptical DriveOSMonitor
WD Caviar Black 500GB LG Super multi Blue Win7 64bit ASUS 23" VH236 
PowerCase
Corsair TX850 Cooler Master HAF 932 
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post #3 of 55
Thread Starter 
what is your memory freq in the bios set to?

you left the multiplier at auto?

I will try those settings soon, im testing my stock settings to see if the system is indeed stable still..
Edited by JAM3S121 - 7/16/11 at 3:42pm
post #4 of 55
Thread Starter 
can't enter windows with those settings, after the windows splash screen its a bsod..
post #5 of 55
did you take out your cpu from your mobo by any chance?
post #6 of 55
Thread Starter 
Nah, i just installed a second fan on the hyper 212 with zip ties didn't touch it.

I booted fine into windows at stock settings and passed linX 10 times. I was getting into windows before when I tried overclocking agian to 4ghz, and it would boot fine and run linX for one pass and halfway through the second it would STOP the test but didn't crash my pc.
post #7 of 55
Set DRAM to 1.65
Set Vcore to 1.35
Leave QPI at 1.31

If that is stable, work your way down in terms of voltage until it's not stable, then bump back up and stress test. Rinse and repeat .

What revision is your chip BTW?
Deathprimus
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 4.0Ghz @1.24v ASUS Sabertooth X58 ASUS 69502GB unlocked Corsair XMS3 6GB 
Hard DriveOptical DriveOSMonitor
WD Caviar Black 500GB LG Super multi Blue Win7 64bit ASUS 23" VH236 
PowerCase
Corsair TX850 Cooler Master HAF 932 
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Deathprimus
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 4.0Ghz @1.24v ASUS Sabertooth X58 ASUS 69502GB unlocked Corsair XMS3 6GB 
Hard DriveOptical DriveOSMonitor
WD Caviar Black 500GB LG Super multi Blue Win7 64bit ASUS 23" VH236 
PowerCase
Corsair TX850 Cooler Master HAF 932 
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post #8 of 55
Quote:
Originally Posted by JAM3S121 View Post
Nah, i just installed a second fan on the hyper 212 with zip ties didn't touch it.

I booted fine into windows at stock settings and passed linX 10 times. I was getting into windows before when I tried overclocking agian to 4ghz, and it would boot fine and run linX for one pass and halfway through the second it would STOP the test but didn't crash my pc.
sorry, another question, did you take off your hyper 212+ from your mobo when you installed the 2nd fan?
post #9 of 55
Thread Starter 
Its a d0 chip

No i didn't take it off i just took the motherboard out of the case.

I'll try that tech
post #10 of 55
Quote:
Originally Posted by JAM3S121 View Post
No i didn't take it off i just took the motherboard out of the case.
interesting...

so while running linx or ibt you are getting errors but not crash or bsod, if it's vcore or qpi then you'd be getting blue screens to be honest...

try up the pll a notch, it helps overclocking stability. try keeping it under 1.88 though
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