What's the real cause of OCs causing games to crash?

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modernwar99

modernwar99

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Jul 9, 2014
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Obviously people will tell you elsewhere that "oh your OC is unstable" etc... I would like to know what the real problem is but in depth. Something like valley benchmark you can OC until the drivers crash, but good luck using that valley-stable OC in any game. It doesn't sound like it'd be any technical limitation (correct me if I'm wrong) because my R9 280 can only hit 1020mhz stable in BF4 (voltage is as high as afterburner allows), but my old GTX 650 could run in upwards of 1300mhz in BF4.

Like is there something wrong with the timing of an OCed GPU that messes up the game engine's execution?

Would be greatly appreciated if someone could give me an answer in a similar format of my example above. Please no "your OC is unstable" or "you got a bad card" responses.

 
Solution
SkylerJacobs
Taking experience from my system and overclocking. I have a EVGA GTX 780 6GB SC. While i can easily achieve 1200+ mhz overclock and run valley benchmark, but most games or other benchmarks will not run with this overclock.. They load up, and instantly the drivers crash.

What i have done to deal with this issue is simply go from that base "valley stable" overclock, and dropped the overclock slightly. Ended up with 1175mhz on the core, and overclocked the memory from 6000 to 7000mhz. Now i thought this was a stable overclock. Wrong again. I was able to play Shadow of Mordor, everything maxed on ultra with AA turned all the way up, for around 3 hours. After 3 hours, once again another crash. Dropped the overclock slightly again, ended up...
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SkylerJacobs

SkylerJacobs

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Jan 26, 2015
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Taking experience from my system and overclocking. I have a EVGA GTX 780 6GB SC. While i can easily achieve 1200+ mhz overclock and run valley benchmark, but most games or other benchmarks will not run with this overclock.. They load up, and instantly the drivers crash.

What i have done to deal with this issue is simply go from that base "valley stable" overclock, and dropped the overclock slightly. Ended up with 1175mhz on the core, and overclocked the memory from 6000 to 7000mhz. Now i thought this was a stable overclock. Wrong again. I was able to play Shadow of Mordor, everything maxed on ultra with AA turned all the way up, for around 3 hours. After 3 hours, once again another crash. Dropped the overclock slightly again, ended up with 1150mhz core/7000 memory as my overclock. Played Shadow of Mordor for 6 hours straight, no crashes, and temps were sitting at 75C.

Now, your GPU is a bit different, but the same method applies. Go slowly when overclocking, monitor temps to make sure you arent hitting any thermal limitations. Test, test, and test again. Just because the OC might be stable with one program, does not mean it will be stable during all games/benchmarks, simply because each game/benchmark puts a different load on the GPU.
 
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Solution
SkylerJacobs

SkylerJacobs

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Jan 26, 2015
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Last sentence of my 1st post.

Just because the OC might be stable with one program, does not mean it will be stable during all games/benchmarks, simply because each game/benchmark puts a different load on the GPU.
 
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