I think I found the perfect laptop. It's 3.9 lbs, can handle processors up to i7 640M, has a powerful Ati HD5650 videocard what is switchable to Intel.
Because of no optical drives, it has two heatsinks with two fans on the right and left side of the laptop. It means a million times better cooling than on normal laptops where both chips are cooled with a single fan.
I can OC it to 3.35 Ghz without problems! Or put in a i5 580M or i7 640M beast when the new BIOS comes out. From a 3.9 lbs / 1.7 kg laptop it's really impressive!
When overclocked I could get 16.7 sec wPrime 32M results. My desktop Q6600 does 18.7 sec, but it is a Quad Core! OC-ed 3dmark06 score: 9600 (someone did 10000 with a better OC-able unit).
I can confirm that on really good brightness levels, while browsing the internet, it has discharge rate of about 7000 mW, what means 9 hour battery life on the stock battery, or 12 hour on the 9 cell extended one.
And it is the first laptop I've met what has a really silent fan profile from factory. The hightest level only switches on at about 85 C degrees! And the highest level is as loud as a normal level for other laptops, for example my Thinkpad X61 was louder at 50 C.
It still has shortcomings, what needs to be addressed.
- The display still has issues, brightness fluctuations and brightness shifting.
- Not all units are OC-able, some of them use different clockgens.
If you would like to read 400 page long threads about it, here you go:
http://forum.notebookreview.com/acer/48 ... s-420.html