DON'T BUY DELL!!!..
first of all your ram, you should get 2x512 Corsair TwinX XLPT Latency: 2. 2. 2. 5.
sec. your CPU get the 3500+ instead of the 3200+, it's much easier to OC
Third your mobo i would suggest that you get the A8N-SLI(if you can afford it, buy the DELUXE edition)
the reason you should buy SLI version, is that you can extend your GFX with another GFX card.
I'm not aware of your economical situation right know, but if you can afford these changes i have suggestet, your machine would be LOADED!! but that's up to you..
my regards
Philip