Im trying to overclock my ATI X1900 AIW card, and Im having a bit of trouble. Ive tried Riva Tuner and ATItool, but both have been having the same problem. I can boost the core speed just fine, but the memory clock is causing some real problems. A boost of as little as 10 MHz gives me a black screen and I must reboot. Im pretty sure the other hardware is ok, PSU has enough in it, etc, and Im not getting up to load anyway where the power would be a problem. Ive also read of others getting their X1900 AIW's to over 600 MHz memory, so it seems like there is usually lots of headroom on this card. Any suggestions? Or perhaps Ive just got a dud?
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