Games are Mass Effect 2. Dragon Age. Just Cause 2. MW2. Lotro.
OS is Vista 64 bit
PSU 400w Corsair
1920 x 1080
Nope I don't think it will bottleneck that card. However that is a large resolution for such a card. My advise it whack some more RAM in ASAP and maybe upgrade to Win 7 as it's easier on your CPU than Vista. Keep an eye on that PSU.