i wanted the enermax infiniti 720w ($60 rebate), but zzf is sold out...
phenom ii 1090t
2x 2gb corsair @ 1600
ati hd 5850 oem (will crossfire some time down the line, will be at least a few months)
i also have an old psu lying around, antec bp500u, but it only has one 6-pin pci-e connector.
should i use that instead for now, with a molex to 6-pin adapter, then when im ready for crossfire, upgrade the psu?
These are the official recommended power requirements for your GPU:
500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
This applies to the whole system not just your GPU.
The Corsair 650TX is a great PSU but doesn't have the four PCI-E connectors required for Crossfire on your graphics card. However the 650HX does have four connectors and is a modular PSU which will help keep your case clean and free from unused cables.