what FSB does your laptop support and what is the speed of your ram?
how much are you willing to spend?
http://www.cpucitystore.co.uk/catalo...cPath=28_29_31 this place is ace to get stuff from.
btw, the fastest XP-M cpu is 2800+ but these are fairly new if i'm not mistaken.
so next fastest is 2600+ (if you can find these) or 2500+
I got the XP-M2500+ in my desktop