Well, once you get it, bear in mind that you won't immediately get to make use of multithreading. You'll have to tell Windows to make use of SMP (it will do this automatically on a reinstall, but you have to change it manually yourself if you don't want to reinstall). I know I did it once, and the info on my experience is here on these forums, but you're probably better-off just googling for the Microsoft knowledge base article on it.