Boosted my old computer 3x with Phenom X3
I had this old Windows XP machine with an Athlon 64 3000+, which used to score higher than a Xeon 3.0GHZ in various benchmarks, but it has gradually become too slow... I finally decided to do an upgrade. Bought a Phenom X3+a AM2+ MB, added more memory. Just hook the old hard drive to the new box, Windows XP reactivated itself, and everything runs fine. It is like putting a jet engine on a motor cycle.