Haven't thought much about budget yet, but I would like to keep things as inexpensive as possible. Maybe 150-200 bucks. Will I even see a decent upgrade in performance at this price point though? What do you think is the minimum I should be looking to spend here? I'm pretty out of the loop on the current crop of graphics cards.
Quality GPU's start around 200, and can go up to 700. IMO, best bang for buck right now is the Radeon 6870 or the GTX460. Both single GPU's, cool, quiet, and efficient. 460 is a bit cheaper around ~180, with the 6870 being ~250.