And here i am scoring 2500
. I really doubt that anything is wrong with the card itself if you are not getting artifacts, or display errors the card is probably fine. Only thing I can think of is maybe the motharboard is crap, and did you have another card before and was it NVidia? Sometimes there are conflicts if you switch from an NVidia card to an ATI card.
This has nothing to do with the card, but is that an LCD or CRT monitor your using for a gaming comp? (I'm looking in getting a new one)