I have a Gigabyte Radeon HD 7950 that I have overclocked to 1070mhz core clock and 1575 mhz memory clock. It can run Crysis without crashing and furmark. But when I play BF3 and some other games, it crashes after an hour or so. I increased the power settings 10% but that didn't help any. If I turn down the settings it'll probably work, but I'd like to use these settings because it outperforms a GTX 580 SC at them! Also the hottest the graphics card got running Furmark was 63c so I don't think heat is a problem.
AMD Phenom II x6 1100T OC'd to 3.8ghz
Kingstom 4GB 667mhz x2
Thermaltake TR2 RX 750w
Gigabyte Radeon HD 7950
Windows 7 Home Premium 64bit
That computer isn't old. I think you meant to say 1333MHz ram, but said 667 because that's what cpuz says. Have you tried the 12.11 b4 driver?
No, I haven't tried them... I'll download them now and try.
EDIT: Beta drivers didn't help. If anything, it crashes faster. D:
EDIT (Many moons later): It was because I didn't have the volts turned up. Everyone must have been busy worrying about my RAM to think about that.