I made to research and make sure all of my connectors are good.. and it is compatible
I know the bare minimum is 500ws for 4870 but... i know i have alot of other energy hungry parts too
again my question is:
Will a 650w psu be more than enough to power this build?
Well, a 650 watt power supply is more than you actually need. On the other hand you'll be ready for a couple of upgrades. My personal favorites are Corsair power supplies. I build pc's for friends, neighbors, and girlfriends. I use Corsair exclusively. The psu's are rock solid and very stale. Here's a link to a Corsair 650TX which can be had at newegg.com for $69.00 after mail in rebate: