Been using my work ring with only a GTX 560 that hashes around 55MHash over at Slush's. I think my cooling isn't that great cuz latetly it's been blue screening alot.
So I'm curious to read what people recommend for a rig, although I'm saving up for a BFL Jalepeno, if they ever ship!
Yeah, a 7950 could do about 500Mh/s for nearby same electricity.
That's pretty cheap actually... might be worth plugging it in to my extra PCI-E and leave the 560 for display.