After playing the bioshock demo, i'm considering upgrading my graphics card. I've currently got a passive cooled 7600GS 256MB, which i bought since it was quiet and i was'nt expecting to play games on the pc. I'm running a 22" widescreen so res is 1680x1050 and it's not quite up to the job. Having looked at whats available, think i might go for the HIS X1950Pro 512MB. Thing is i've got a 400W PSU and i'm not sure if it's gonna be enough, i can't afford to upgrade my PSU aswell since i'm already stretching it with the card. Here's my system: A64 4000+ 2x 1Gb RAM MSI K8N Neo 2 Plat M-Audio Audiophile 2 Optical drives 2 HDDs PSU is this one here: http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=383030 What do you guys reckon?