thats not very fair, try matching the x800 against the 6800 instead, thats not a very fair fight, unles your gonna take a 9800pro 256 against a stock 6800 128mb.
Actually it would make a difference. A 6800 NU with 128mb ram, would outperform a 9800 Pro with 256 ram, anyday. The 6800's architechture is wayyy better. Not to mention more pipelines and vp's.
SportDude, you may want to compare all you want but if you have a system that cannot take either of these cards, your just wasting your money. It would be like putting a 400 HP motor in a Lada!
What type of system do you have?