Hey guys. Since my NeoHE is a piece of shit and antec refuses to let me exchange it for something else, I need a new inexpensive PSU for my SLI system. Specs are in sig, but I need something that can ahdnle 3 or 4 hard drives, 2 7800GTs, 2GB (2 sticks of ram) and 1 or 2 optical drives as well as an x-fi card and a x2 processor. I've been looking at the enermax liberties, seeing as they are modular and have 120mm fans. The seasonics look nice too, but I really can't handle a DOA product like I hear some people have been getting. My question is is 500W liberty enough? Or do I need to pay the extra 80 dollars for the 620W model? If I do need the 620W model I'll probably go with the seasonic just because of price.