What is the CPU that you bought? I see in your signature that you have an X3 (unlocked X2). That is pretty decent and OC's well. If you are looking for new ram see if you can find some decent 1600 CL8 stuff. Like this...
Crucial BL2KIT25664BN1608 Ballistix 4GB
Damn, these ram prices at Tiger Direct are bouncing around like mad. I swear that yesterday this same stuff was maybe $12 more. Before that it was $14 cheaper.