CPU: AMD Phenom X4 955 3.2 GHz
Current GPU: Radeon HD 5670 1GB
PSU: Antec Basiq 430W
RAM: I'm not entirely sure on the specifics, but it's 3 2GB RAM sticks.
I don't really have the money at the moment to get both a new PSU and a video card (about 160), so I was wondering what's the best card for my setup? It's a store-bought rig that I've been upgrading over the last year or so, so it's got a generic DVD-RW drive, and usually about 4 USB devices running.
The card I'm currently looking at is the 6850. The 5770 is my backup if that doesn't work out, but I've read it's not -that- substantial of an upgrade over the 5670. Any advice?
P.S.: If you have any NVIDIA cards, I'm open to either ATI or NVIDIA.