XFX, probably better known for their high-quality graphics cards, recently introduced a small range of enthusiast power supplies. Two Black Edition units with DC output powers of 750W and 850W, and a 650W XXX Edition power supply are aimed at the performance gaming market. OCC has already put the XFX 850W Black Edition power supply through its paces and it performed very well. This time around, it's the turn of the XFX 650W XXX Edition power supply, so let's have a look at it and then see how well it performs.