Cost efficient switch?

Recently, I've been lucky enough to receive as a gift a new graphic card (the 8800gts).
However, all of this is nice, but the FPS are absolutely horrible.
So, after a few tests here and there, I think it would be my processor that bottlenecks the graphic card.

So, is there a good cost efficient switch for my old Amd64 X2 3800+?
Or do I have to change the motherboard, ram and the processor?

Current specs:
Mobo: MSI NEO-nF4 platinum edition
Processor: Amd64 x2 3800+ (not overclocked)
Memory: 1 gig @400mhz <--Sad, I know
 
I think you're asking for a cost effectig Graphics Card; a switch is a networking device ---
if so, please change the title :)
 
I think what hes trying to say is what can he buy to replace his X2 3800 that is cost efficient and won't bottleneck his 8800 GTS
 
Back