Ok, so here is the story. My 9800 pro broke recently and I managed to get a refund, so i though might as well get a 6600gt for £5 more. I get it only to find my motherboard needs to be replace. So I get another one and all works ok but performance isn't as good as my 9800 pro. In the games I have tried half-life2, counterstrike source, sid meirs pirates, peromance has been worse than my 9800 pro. In the stress test I get 63 fps instead of the 69 i got with my 9800 pro. In half-life 2 and pirates I get slow downs where I never used to. I have tries 66.93, 67.03, 71.80 or something like that and they are all the same. Is there anything I can really do? Thanks,John.