(Advice please!)
I've been hunting around for how much of a difference switching to dual core will actually make. I'm pretty poor at the moment but really love this game

Can anyone find some cpu-based benchmarks? (The only ones google seems to give are based on changing the graphics cards around.)
I have an:
Athlon 64 3000+ (Winchester core), slightly clocked.
1GB ddr400
Asus A8V mobo (Socket 939, AGP)
256MB, 6800GT graphics.
At the moment it cant handle 3 cpus - if I play against more than two on skirmish it grinds to a halt! And it doesnt like the big maps either

Can anyone tell me what difference (say) an X2 3800+ will make? Or is there a batter option you'd recommend?