hey, ive just bought this card to upgrade my old 8800 GTX. on my old 8800 i used to get around 100 FPS on guildwars, since the upgrade to the GX2, its droped to around 50. im wonder how is this as my brother has the same card and gets 600+ FPS
im wondering if its my PSU as im still running a 650W
also i dont thinks it bottle neck as it would still run at 100 FPS same as the old card thanks
9800 gx2
sky stars
Elder III
Might be PSU, since that GPU you have now is reputed to require a 580watt or higher PSU, although I believe the actual power draw from it under load is about 380 or so watts. Depending on the rest of your system, that could be the problem. However the drastic drop in FPS sounds like a driver issue. When the 9800x2 came out at first the stock driver was crap... allot of games wouldn't even load. NVIDIA fixed that of course, but you might have an older driver version... I'd check that out before anything else.
kontradictions
This might be a stupid question but did you uninstall the old driver, run CCleaner, then install new drivers?
rick1027
id check my drivers first for my video card look for an updated version on the internet from nvidias site. if that dont work you can always try another psu always go with a brand name like corsair or antec.