Hey all. I've got a Radeon 7950 (Sapphire) but I want to try an nvidia GPU to see if it helps with some problems I'm having. I want to sell mine and buy a used nvidia card to keep the cost minimal. Something with roughly the same power, or a slight upgrade. I haven't been following graphics cards for a couple of years, so could anybody recommend a good one for this purpose, or any I should specifically avoid? How about specific manufacturers? Thanks a lot.