Ok i know all about graphics card but im a real NOOB when it comes to PSU I think i have MINI ATX, dont know if this will effect I cant provide much info apart from im on Acer Aspire T671 and on 250W PSU I want to upgrade ready for the new nvidia card or 8800. I know i'll need 600-700W for this, but which one will work. Some screens of what my specs are so u know what will need to be plugged in, i also have PCI-E x16 and x1 and 2xPCI slots on my computer and 160gb sata drive I need UK links only as thats were i live, im willing to spend whatever. So thanks and please help QUESTION 2: Will normal ATX fit and work with Mini ATX?