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670 OC stable in Furmark/ MSI kombuster, but GPU drivers crash in games

post #1 of 5
Thread Starter 
I've been using MSI afterburner to overclock my 670. I've managed to get around an extra 200MHz out of both the core clock and the Memory clock and both are stable when i've tested them in Furmark and Kombuster for several hours. However, as soon as i join a game such as Battlefield 3 my drivers will crash. This will basically happen every single time unless i lower the overclock to something less than around +50Mhz, and even then they sometimes crash. My CPU is overclocked to 4.4GHz but i'm pretty sure that's not causing the problem as i've tested that in Prime95 for several hours with no problems and good temps. I am using the 314.22 drivers as i've heard the new one's aren't good.
Thanks in advance for any help.
post #2 of 5
Quote:
Originally Posted by SimoHayha View Post

I've been using MSI afterburner to overclock my 670. I've managed to get around an extra 200MHz out of both the core clock and the Memory clock and both are stable when i've tested them in Furmark and Kombuster for several hours. However, as soon as i join a game such as Battlefield 3 my drivers will crash. This will basically happen every single time unless i lower the overclock to something less than around +50Mhz, and even then they sometimes crash. My CPU is overclocked to 4.4GHz but i'm pretty sure that's not causing the problem as i've tested that in Prime95 for several hours with no problems and good temps. I am using the 314.22 drivers as i've heard the new one's aren't good.
Thanks in advance for any help.

This is perfectly normal. Synthetic stable is not the same as game stable. You might need a bit more voltage on the gpu or lower clocks. Your cpu OC might need a bit more voltage here and there too, or come down a bit, or your system RAM might need a bit more voltage or looser timings, lower freq, etc. P-95 is not going to tell you if it's game stable. Tests your cooling pretty well, though.

BTW, many think that furmark and kombustor are so stressful, they can be damaging. You're better off testing with heaven/valley, 3dmark, etc, which are closer to game testing anyway. But games are always the final test.
post #3 of 5
Quote:
Originally Posted by SimoHayha View Post

I've been using MSI afterburner to overclock my 670. I've managed to get around an extra 200MHz out of both the core clock and the Memory clock and both are stable when i've tested them in Furmark and Kombuster for several hours. However, as soon as i join a game such as Battlefield 3 my drivers will crash. This will basically happen every single time unless i lower the overclock to something less than around +50Mhz, and even then they sometimes crash. My CPU is overclocked to 4.4GHz but i'm pretty sure that's not causing the problem as i've tested that in Prime95 for several hours with no problems and good temps. I am using the 314.22 drivers as i've heard the new one's aren't good.
Thanks in advance for any help.


If you are really looking for stability on your GPU overclock, consider using Unigine Valley to stress test it since it is a non-synthetic benchmark and would be the closest to game stable as you are going to get.
post #4 of 5
Furmark is being throttled by drivers (look at power and temp limits). The likes of 3DMark, Unigine Heaven and Valley will serve you better, as they load the GPU more using the same power, and are not being throttled.
post #5 of 5
Thread Starter 
Thanks for all of the help guys, I'll be sure to test out 3D Mark and unigine when I get home.
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