Hi. I have a tbird 1.4ghz, 512 ddr, and gf2 pro. I was wondering what video card I should upgrade to. One of my former customers is selling a used Radeon 8500 64mb for $70. is it worth getting that or a GF4 ti4400? I dont have that much money right now, but i would like to think that money isn't a issue on this one.