Switch out the Antec Three Hundred for the CM Centurion 5
. Far better case in my opinion. Great choice on processor
. Instead of the Seagate I would pick the Samsung Spinpoint F1
. Memory choice looks fine. Instead of that motherboard, I would go with a 780G chipset
. You won't really need 650W so I would go with this Antec
. Unless you love your music a lot, you won't need a sound card. Lastly, with some money saved, I would get the HD4850
instead of the 9600GT.
P.S: SLI only gives you an increase of 40% in performance. An HD4850 would easily out-do 2 9600GTs in SLI. If you want you can even upgrade to an HD4870