Yeah the pentium m's are pretty good, they take some influence from the pentium 3 designs. I dunno if a 1.8 would be equal to a 3.2 p4 though, the pentium m's have some trade offs which makes them perform lower in some things than the regular pentium 4 chips.
http://www.tomshardware.com/cpu/2005052 ... m4-10.html