That 5500 is probably gonne be pretty loud. You may want an aftermarket fan to quiet it down. I've got a GeForce 4, tho, and I haven't found a game it won't play yet.....

im not real sure, the 9600 supports a newer version of Open Gl than the 5500 and is a little faster i think, but the 5500 is like 20 bucks cheaper too. so im not sure, also alot of ppl seem to have had issues with their 9600s.