[Xikarita]

I need to buy a laptop PC and, according to my budget, I have basically two choices:
- Celeron M 1.5 Ghz with 512 MB RAM DDR
- Sempron 3.0 Ghz with 1Gb RAM DDR

Which do you think it's best? For the RAM option, it's obvious...but I would like to know which processor is fastest: the Celeron or the Sempron.

Thanks for taking the time, your opinion counts!