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

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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

More about : cpu stable stress tests game crash

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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.
CPUs Authority

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+.

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.

CPUs Master
Overclocking Authority

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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