PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
500W (or greater) power supply with one 75W 6-pin PCI Express power connector recommended
600W power supply (or greater) with two 75W 6-pin PCI Express power connectors recommended for AMD CrossFire™ technology.
mates i have the same problem and i have 350w psu to.. but the fact i wanna ask is almost the same can i run on my psu a Nvidia gtx550ti, or hd5770?
And the fact is that now i have 9800gt and it runns 100% good on my current psu..
which requeres the 400w psu ? so