I was disapointed with my mac pro, i think i even made a thread about it. It was slow, i have the dual 2.66 Ghz with 1GB OF RAM. Today i add'd a 500GB HD, a 2nd DVD burner and 2 more Gigs of RAM making it a totall of 3GB. All i can say is WOW its soooo damn fast that i cant be any more excited/happy. This monster is super fast and i dont think i can look at a PC anymore FYI i ordred 4 more Gigs of RAM to add to this bad boy. All i can say is RAM makes a HUGE difference.