It should run it alright, but not max settings and no AA. I had an Athlon X2 3800+ 2.0GHz x 2 with a 7900GS which equals a 8600GTS. I ran it on 1024x768 with high settings. 1280x1024 were too much as it only had 256MB DDR3 as does yours. Give it a try and let us know how it worked.