Actually for me the OPPOSITE happens.
I get snow when ram is clocked too high (above 370mhz) and usually in the Audio tests & wings of fury of 3Dmk0;, and I get corruption and crashes with the core above 540mhz, usually in battle of Proxy (like a kalidascope).
OF course that's with my card and maybe the R9800s are different in that respect than the R9600Pros, but I don't know why. I call them blackflies as the snow is black in the tests.
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