Ok, I finally broke down last week and made the jump from dual core to quad, I also setup sli. My problem is I just ran 3dmark06 and I didn't even break 6000 marks. Below is my list of hardware let me know if you have any ideas on how to get my score up a little higher.
AMD phenom 9550
Corsair XMS2 DHX 2048MB Dual Channel PC6400 DDR2 800MHz Memory (2 x 1024MB)
Asus M2N-SLI Motherboard - NVIDIA nForce 560 SLI
XFX GeForce 8500 GT Video Card - 1GB DDR2
500gb WD harddrive 7400 rpm
AMD phenom 9550
Corsair XMS2 DHX 2048MB Dual Channel PC6400 DDR2 800MHz Memory (2 x 1024MB)
Asus M2N-SLI Motherboard - NVIDIA nForce 560 SLI
XFX GeForce 8500 GT Video Card - 1GB DDR2
500gb WD harddrive 7400 rpm