If there's one thing a netbook (or an ultraportable) needs to be really competitive, it's great battery life. No matter how great the software or the hardware, an ultra-mobile machine needs great battery life to be really useful in the field.
The dm1z is a system where we were paying
particularly close attention to battery life. Remember, the Fusion APU
was supposed to be more powerful than Neo, while also improving on
The X100e that we reviewed last year only managed around 2.1 hours of life, while the X120e (both using a 6-cell battery, while the latter has AMD's Fusion APU under the hood) managed around 3.5 hours in the same test. But those are just to provide perspective; our dm1z here managed just over four hours of use. We have seen reports that this machine will last even longer if you disable Wi-Fi and go easy on the screen brightness, and we believe it. Either way, over four hours when in use constantly is pretty impressive, and it matches (or beats) most other netbooks on the market today. Plus, you're getting an enhanced level of performance with Fusion; finally, performance that doesn't compromise when it comes to battery life.