How do i OC my Sapphire X1800XT

EvilBDGamer00

Junior Member
Nov 29, 2005
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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 there a prob in the Overdrive feature cause i heard these cards are good at OCing.
I dont want to update my BIOS so wht software can i use to OC my card.

Motherboard-Sapphire Pure CrossFire II PC-I7RD400
PSU- 680W Pure Power Thermaltake
Intel Pentim D 820 2.8 Ghz processor.