What kind of PSU do I need for my new Motherboard?



Can a 550W support

AMD FX-8320
Raedon 7950 3GB
Corsair 1TB
DVD-RW
8GB RAM (Looking to upgrade to 16GB)

I was thinking of grabbing a 700-800W PSU unless a 550W can handle it.
 

Awesome, thanks. Now, I need to know if I need an ATX PSU or an ATX12V PSU. Does it matter?