I have an old Dell 8250 with a P4 2.4GHz 533FSB CPU, 9700TX GPU (which is basically a lower-clocked 9700), 4* AGP motherboard, and 2*256 RDRAM (PC1066 [EXPENSIVE to upgrade!]). Although the PSU on it is marked as 250Watts or so, it is better than what you would expect. It is not proprietery, and...