Ok, here it goes then if more people are interested:
1. It is better to use a thermal paste rather than the same pads.
2. It runs at full 2.5GHz
3. Link for Dell guide:
http://support.euro.dell.com/support...hs1&l=en&s=dhs
4. Battery life is a bit better and it runs much cooler and more silent (the fan barely starts now).