Thanks leonarderman for the visiontek bios - but quick question - why is it 675/1050 while the other "lightly clocked" versions are 700/1100?

Is it that the visiontek can't handle it? I bought a preflashed visiontek 4850 off of ebay for a decent price (used) set at 725/1100 but under 3dmark06 and Vantage appears unstable since it pauses/jumps. Do you think 700/1100 would be ok?