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CPU is stable in all stress tests, but in game it crash

Last response: in Overclocking
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August 1, 2012 11:45:34 AM

I have a problem a long time with the CPU overclock, I do not know how to solve it .. The overclocked CPU runs all possible stress tests of Prime95 (12hrs), Linx (75runs all memory in use), intelburntest (80 runs, all memory in use), OCCT, and it is stable ... But in Mafia II, it crash... But when I set it to stock, then the game does not crash, which means that it is still a problem in the instability of the CPU .. How to solve this problem?

Thanks!

CPU - Phenom II x4 955BE
Mainboard - ASUS M4A89GTD PRO/USB3
8GB DDR3 RAM 1600MHz CL9
a c 78 à CPUs
a b K Overclocking
August 1, 2012 1:34:45 PM

Is your GPU overclocked?
August 1, 2012 2:11:04 PM

No, it isn't. GPU is full stable..
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August 1, 2012 2:25:35 PM

it can be the driver for the gpu because idk why would it crash in mafia 2 if in p95 it was stable for 12hrs its prob the gpu or the gpu driver, what gpu/driver your using ?
August 1, 2012 3:15:31 PM

Games like Mafia II and Call of duty 4 Modern Warfare Multiplayer crash.. Graphic drivers are ok, because when I set CPU to stock, crashes does not happen.. :-/
What should I do?

P.S. I returned to the older drivers, and that two games still crash, when CPU is overclocked.
August 1, 2012 4:21:27 PM

idk then only thing i would do is lower the clock speed or add more voltage and try your games till it doesn't dc just make sure it doesn't get two hot .
a b à CPUs
a c 324 K Overclocking
August 1, 2012 5:50:58 PM

Bad power supply? It's possible that your system is getting starved of power or it's getting fluctuations. If your CPU is stable at high loads while your GPU isn't being taxed , but when both are taxed and it crashes, it seems either your video card or driver are to blame -or- if they both check out, you have a bad power supply. You could also question your system RAM, but that can also be easily tested with MemTest86+.
a c 185 à CPUs
a c 150 K Overclocking
August 1, 2012 5:55:17 PM

All system specs please!
August 1, 2012 6:20:48 PM

rubix_1011 said:
Bad power supply? It's possible that your system is getting starved of power or it's getting fluctuations. If your CPU is stable at high loads while your GPU isn't being taxed , but when both are taxed and it crashes, it seems either your video card or driver are to blame -or- if they both check out, you have a bad power supply. You could also question your system RAM, but that can also be easily tested with MemTest86+.


I think it would be the power supply like you said. On prime95 or other tests only the cpu is beings stressed, therefore it is the only thing drawing significant power. The game is drawing power from both, and was probably drawing the max before the cpu was overclocked. The OC probably puts it over the edge. Is it possible to run furmark on top of prime95 to test gpu and cpu at the same time? I've never tried that, and don't know how it would work out.

August 1, 2012 6:50:34 PM

Thanks for answers. My power supply is Thermaltake Toughpower XT 775W.
August 1, 2012 7:29:36 PM

Problem is my power supply?
August 1, 2012 7:40:43 PM

Try increasing your CPU voltage until your GPU is stable.
August 2, 2012 10:23:13 AM

I increase CPU voltage to 1.464V and the problem is resolved. Is that voltage too high for 24/7?
August 2, 2012 3:28:37 PM

Try going down by .01V increments to find a voltage that games won't crash at. 1.464 is up there. I've been told though that anything under 1.5V was OK
August 2, 2012 5:39:54 PM

I can going down by .01 increments in bios, but in Windows it will be 1.452 or 1.464V. It cant be between 1.452V and 1.464V. Why? It can going down or up by .10
August 2, 2012 5:45:45 PM

Look at what your BIOS are saying. That's gonna be a the actual voltage.
August 2, 2012 9:35:32 PM

What is ACTUAL VOLTAGE?
August 2, 2012 10:32:03 PM

What you have it set as in your BIOS.
a b à CPUs
August 2, 2012 10:40:42 PM

maybe after being overclocked for a period of time, it cant handle it anymore.
a b à CPUs
a c 100 K Overclocking
August 2, 2012 10:50:33 PM

1.464-1.452=0.12 volts.

So when you drop 0.1 volts in BIOS, it reads as 0.1 volts less in Windows... What's the issue with that?

Anyway, yeah, overclocking will slowly eat away at your CPU. People seem to think with good temps, anything goes. This is absolutely false. Power (Voltage and frequency) is the killer. It's totally normal for an OC to degrade over time. Lower temps help delay it. My i5 750 has been at 4ghz for a long time now (~1.5yrs), and I've had to bump my voltages up once so far.
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