when I went from a duron 1GHz to the 2400+ XP (not this xp-m I currently have, I have both XP-M and XP of the 2400+) it was like night and day basically. Couldnt believe the awesome speed. BUT now that I know CPU's better I realize that chip sucks with it's mere 266FSB and 256k L2 Cache...unless you can get a barton core 2400+