They are quite similar. Both have nearly the same clock speed. Both have a total of 1MB of L2cache but the intel's is shared and the AMD's is exclusive. The intel is 45nm and the AMD is 65nm which means the AMD will run hotter most likely. The AMD gets a boost from its on die memory controller and HyperTransport links on its motherboard. Both are capable of running full 64 operating systems.

The best difference between them would be as to what is on board their respective laptop. The AMD will have quite respectable performance from its video chip as I would hope it either a Radeon HD 3200 or better a 4200 with SidePort memory. These are about the best you can get for integrated video these days. The intel will undoubtedly have a GMA4500. These don't game very well nor do they do a very good job of playing high def video. The AMD chipset should have a fairly complete selection of connectors and functions. The interl may or may not, depending on the maker.

Both chips have a TDP of 35 Watts. The intel should offer slightly longer battery life for a given series of tasks, say about a half hour.

As you can see, these two CPUs are quite similar on and of themselves, the supporting cast of laptop parts makes or breaks the deal.

 

You should give us more details about what you want to do and what laptops you're comparing.