Thanks for the info. I've currently got a 450W Corsair PSU (?? VX). Currently running an AMD 960T, 6850, ssd, hdd, dvd etc and power meter on power cord seemed never to read more that ~230W (forget what figures were).Thinking about some upgrades ... may take gfx to 280X and perhaps cpu to 8320/8350 (and overclock). Should I be budgeting for new PSU as well (and if I do that probably have enough cast-offs to put together a new PC at the same time) and if so what power rating to future proof me for the next few years?