I upgrade my pc, with new motherboard, AMD X6 2.8 gig , 8Gig of Ram, Windows 7 x86, SSD flash driver (vertex2), all for 
very little money and the thing just crunk code  like crazy.  With my previous machine ( 4 Core intel at 3.2 gig) I 
could never get all the core to be buzy at 100%, don`t why. But with this new machine all 6 cores are busy and it almost
 2 times as fast as my old setup at building projects.

The upgrade cost me less then 800$ CDN.