Will be running windows 7 professional
6 gb ram
Nvidia GeForce 560ti
And current processor which I'm debating if I should upgrade or not is: amd Athalon 64 x2 dual core processor.
I'd be using the rig mostly for gaming.
6 Gigs means 3 sticks ?If yes i wouldn t advice it ,you will loose dual channel advantage.
For gaming you can also try the new FM 2 AMD platform.
It allows you to install your video card .The 5600K and 5800K APU-s have enough CPU juice for the GeForce 560ti.
Keep in mind that the board for FM 2 are not in a perfect state needing tweaks with future BIOS releases.
For the AM3+ i would get a 970A-UD3 (or a 990XA-UD3 for proper SLI ) and a FX 4170 CPU ,unless you are wiling to wait for the new AM3+ CPU-s that should arrive at the end of this month.