One of my friends recently bought some black friday AMD HP computer at Best Buy after staying in line for 2 days. Despite the good deal for what it was made for, he expects to game on it: AMD Quad 2.3GHz (stock hs) Offbrand 6gigs DDR2 667Mhz Offbrand 300w PSU Borderline integraded GPU Unsure of mobo specs Hes talking about getting a new graphics card for it, since it came with a terrible one. The only thing is, his motherboard has a single PCI-e bus. Since he is entirely oblivious to computers and how they basically work, I am afraid that he is going to burn out his computer parts by buying the latest and most up to date card to accompany is 300watt power supply. Because he wont get the full performace from a PCI-e 2.0 card, is there a relatively low watt pulling PCI-e NVIDIA graphics card on the market?