alright guys, ill take a look at the ones you suggested.. I just ordered this PC and havent yet recieved it (should be here tomorrow) but ive been reading alot about them having a faulty PSU and powering off after 20mins ect. It comes stock with a 300w psu, quad core 2.6ghz, 6gb ram, 1tb hd and a radeon 5450 graphics card. Alot of forums say the psu is underpowered right out of the box. So i wanted to save myself the hassle of PSU problems and upgrade to a bigger one and probably a better graphics card as well. Probably the radeon 5770. thanks for the replies so far!