Hey guys, i am pretty new to this site in general. Question is... Which graphics card would be the best for my setup. Biostar mcp6p m2+ motherboard, Amd Athlon II 620 x4 @ 2.6ghz, 2g ram, corsair 450w PSU. I can't spend over 100$ on this graphics card. I was looking at the XFX HD 4670, but am now having second thoughts. What do you guys think? Thanks for any input.