How can i OC my Sapphire X1800XT 512 card. (Its built on the new PCB board design with 6 MOSFETs)
Stock speed- Core-625,,,,Memory-750
I used the ATI Overdrive feature to OC to 690/800. But when i play a game the screen goes all messy.I have tried even as low as 640/780 still dosent work.
Is...