Watt Video

What is the best video card for my 600-watt supply computer?

AMD Phenom ™ 9600 quad-core processor 2.30 GHz
8.00 GB RAM
Windows 7 (x64)
ACPI x64-based PC
current video card ATI HD Radeon 3200
I’m new to hardware, so any help welcome

An ATI Radeon HD5830 fits that rig quite well. It should be able to play most games at [...]