[Pat Fairbank]

Be warned that there is a difference between the Pentium-M and the Pentium 4-M. The Pentium 4-M is essentially a Pentium 4 with basic power management, and it does come in speeds of up to 3.2 GHz (I think), but still uses a lot of battery power. The Pentium-M is excellent on battery life, and as Cory said is more powerful than its clock speed indicates, mostly because it has a very large amount of L2 cache (up to 2 Mb).

As for the original question, I would go with the Pentium, because while the AMD might be a better processor in desktops, I've known AMDs to have stability issues in laptops. They also tend to overheat more easily, which is not a good thing in a laptop.