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BSOD after 8.5 Hours of Prime95 Blend...what to do?

post #1 of 23
Thread Starter 
I just tested my 2500K at 4.4 GHz, 1.308V, and it managed to pass 20 cycles (1 hour) of LinX AVX using all available RAM (about 6.7 GB) without a hitch, even though LinX AVX generates much higher temperatures than Prime95 blend.

However, when I ran Prime95 Blend test, my system BSOD'd with error 0x124 after 8.5 hours.

Since my CPU was able to pass 20 cycles of LinX AVX, would the problem most likely be with my RAM?

Current settings:

VCore=1.308
PLL Overvoltage=enabled
PLL Voltage: 1.840v
VCCIO: 1.10V
VCCSA: 0.955V
VDIMM: 1.500V (DDR3-1333 8-8-8-24)...Stock is 1333 @ 9-9-9-24
Edited by 996gt2 - 6/5/11 at 9:10am
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post #2 of 23
From what I've read on these forums that error code usually means an increase in vcore is needed. I would try increasing it a tick or two and re-testing again.
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post #3 of 23
Actually, I think the problem might be likely memory-related...although I'm unfamiliar with 1155 boards, so I'm not sure what you want to raise. But it may not be vcore.

LinX stresses your cpu and vcore. If you pass it, with tolerable temps, you're probably good with vcore. People often use Prime95 Blend to test memory-related things like RAM and northbridge (if you still have a northbridge). I recently got LinX-stable with an overclock, but had to raise volts on a couple of other things (not vcore) to get through 12 hours of Prime95 Blend without error. Maybe someone else who's familiar with socket 1155 can tell you what (non-vcore) volts you may need to raise.

Also, I would recommend 40 LinX passes, at least, with RAM usage (Stress Level) set to High (at least), to confirm stable cpu overclock.
Edited by seward - 6/5/11 at 9:12am
post #4 of 23
Use i7 instead!
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post #5 of 23
Thread Starter 
Quote:
Originally Posted by seward;13759538 
Actually, I think the problem is likely memory-related...although I'm unfamiliar with 1155 boards, so I'm not sure what you want to raise. But it may not be vcore.

LinX stresses your cpu and vcore. If you pass it, with tolerable temps, you're probably good with vcore. People (like me) use Prime95 Blend to test RAM and northbridge (if you still have a northbridge). I recently got LinX-stable with an overclock, but had to raise volts on a couple of other things (not vcore) to get through 12 hours of Prime95 Blend without error. Maybe someone else who's familiar with socket 1155 can tell you what (non-vcore) volts you may need to raise.

Also, I would recommend 40 LinX passes, at least, with RAM usage (Stress Level) set to High (at least), to confirm stable cpu overclock.

Yeah, I ran 20 Cycles of LinX AVX using all available RAM (around 6.7 GB since I have 8 GB total), and it passed without any issues. Max temps were much higher than Prime95, but that's to be expected given the nature of AVX.

I bumped up the VDIMM to 1.56V, VCCIO to 1.12V, and VCCSA to 0.965V. Hopefully that'll work.
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post #6 of 23
In my 5 month experience tweaking this 2500k, BSOD code 124 almost always means increase vcore. I have been able to eliminate code 124 BSOD's consistently with just a slight vcore increase.

Do not increase VCCSA, leave this at stock. It has no effect on CPU overclocking. VCCIO volt increase is not really necessary unless you use 1866+ rams. I think mine is at 1.1v for good measure, but I am using pretty bad ram, 1600mhz 9-9-9-24 2t 1.5v. Never had memory related BSOD with these settings.
    
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post #7 of 23
Thread Starter 
Quote:
Originally Posted by Scorpion667;13759691 
In my 5 month experience tweaking this 2500k, BSOD code 124 almost always means increase vcore. I have been able to eliminate code 124 BSOD's consistently with just a slight vcore increase.

Do not increase VCCSA, leave this at stock. It has no effect on CPU overclocking. VCCIO volt increase is not really necessary unless you use 1866+ rams. I think mine is at 1.1v for good measure, but I am using pretty bad ram, 1600mhz 9-9-9-24 2t 1.5v. Never had memory related BSOD with these settings.

Thanks for the suggestions. I will boost the vcore a bit.

Here's the issue with VCCSA though. When I go a bit higher than 4.4 (say, 4.6), my system will not even boot into BIOS with the VCCSA set at 0.920V, but it boots into Windows perfectly fine with the VCCSA boosted up a bit to say 0.955V. Intel's max is 0.975V I believe, so 0.955 is still within that range.

Any idea why boosting the VCCSA and not changing anything else would have such a big effect?
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post #8 of 23
Who cares? When will you ever see those kind of loads for that period in real world use? Most I have ever ran prime for was 20 minutes. Never had a problem @ 4.63 on my 2600k under normal conditions. I say don't worry about it and stop taxing your poor cpu on useless prime runs and enjoy your computer. If it happens to BSOD during your normal use, then give it a bit more vcore.
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post #9 of 23
BSOD Codes for SandyBridge
0x124 = add/remove vcore or QPI/VTT voltage (usually Vcore, once it was QPI/VTT)
0x101 = add more vcore
0x50 = RAM timings/Frequency add DDR3 voltage or add QPI/VTT
0x1E = add more vcore
0x3B = add more vcore
0xD1 = add QPI/VTT voltage
“0x9C = QPI/VTT most likely, but increasing vcore has helped in some instances”
0X109 = add DDR3 voltage
0x0A = add QPI/VTT voltage
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post #10 of 23
You could probably determine whether it was memory-related or not by running Small FFT test and Memtest.
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