Okay, So I am currently trying to OC a Radeon HD 7750 and I have seen other people get 900 MHZ core clock speed and a Memory of 1250 MHZ and remain stable - Of course, that's the max on stock cards but my Gigabyte is factory OC'd to 880 MHZ and I want to see if I can get it to 930 mhz/1250mhz. Of course, when I go 900/MHZ/1200 MHZ it runs relatively fine on the Furmark test, maxing out at 75 degrees Celsius, but as soon as I run Mozilla Firefox the Drivers repeatedly crash.

The 7750 Doesn't connect to the power supply either, and there is an extra power slider on the Catalyst control menu, Which is odd since the 7750 Draws power from the PCI-e slots only... Anyone know what the problem is and if I can squeeze out any extra performance? I don't need it as I don't game in 1920x1080 and the card can handle most things below that res at max easily, but it sure would be nice.