Prime95 Stable But Not In games!!

Specs--
Intel Core 2 Quad Q6600 OC'd 3.15Ghz.
XFX 780i Motherboard.
Kingston HyperX RAM 1066Mhz.
Zotac GTX260 216 Edition.
Corsair 450W VX Power Supply.
Western Digital Blue 320GB Hard Drive.
Antec 900 Gamers Case.
Arctic Cooling Freezer Pro 7.
DVD/R Drive.

OK so i ran prime95 blend tests with the clock above and it was stable. However in game (UT3) it froze within 10 minutes. I have GPU at stock and the newest drivers. I then clocked at 3.0 and it ran much longer with no freeze (then i quit). Temps are great so no issue there.

Any help would be great.

I ran it for about 7 hours i think, but can i just ask; if its stable under prime for that long should it realy only last 10 minutes in game?

His first post states that the gpu is at stock and that dropping the cpu from 3.15 to 3.0ghz fixes the problem. So, the gpu isn't the cause.

@OP: The game may stress the cpu more or differently than blend, so it can certainly fail faster.

Oh ok, so should i try upping the vcore even more?

I know you never said it, i just wanted your opinion with regards to vcore, thanks ill take a look at the guide.

Guys,

So far, no one has explained the difference between Prime95 Small FFT's, and Prime95 Blend, which is the default stress test. Since amespage17 has referred to "Prime95" in generic terms, I think he has missed the point. orangegator had it pegged in his first post, but then the thread went off on a tangent.

amespage17,

Prime95 Small FFT's is a tortue test designed to primarily stress the processor, while Prime95 Blend is a torture test designed to primarily stress the memory. As I explained above, Blend is the default test, so Small FFT's must be selected manually. Also, be sure to click on "Advanced", then click on "Round off checking" so that errors will be flagged as they occur.

If you haven't yet run Small FFT's, then it's likely it will reveal that your Vcore needs to be increase, as has already been suggested.

Comp