BlackPear1
Senior member
- Sep 6, 2004
- 687
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Did you flash with the XT PE bios? Those are the default clocks for that model. My card wasn't stable at XT PE speeds either, so I flashed with the 16p pro bios (475/450) and then overclocked as desired with ATITool. I have used the Sapphire XT bios (500/500) which also works fine, but out of caution I'm running 16p at pro speeds until I need more, then I can overclock.