well 8600 GT scores pretty high in 3d mark, can you post FPS result in games like oblivion, company of heroes etc on 1024 x 768 with AA (&without)(i am planning to use SLI too for minimal gaming), also i think SLI requires a more powerful PSU so it costs more in the longer run, also it reuires a SLI mobo which also cost some buck (not much though)