I would sugest you look at the recomended Card list Alias has and go with what price you can afford. The other thing is that old/new drivers can make a big differance. I use a gforc4 440 using old drivers and it works great, new drivers dont work ( running 4.5 as well) would ditch winxp and use 2k pro, xp sucks up allot of resources from what i have experimented with several machines. my opinion