The crazy-light Sony VAIO X got the review treatment over at Laptop Mag. They found that thinness comes at a cost, and their test results reveal Sony wasn't kidding with those battery life claims.

The biggest strike against the VAIO X seems to be the heat it generates. Luckily, the 6-cell battery raises the laptop off of the user's lap and helps solve the problem. But if you're going to use the 4-cell battery, better bring a heat shield for your legs.

Speaking of batteries, Sony worked some power management voodoo on this thing. According to Laptop Mag's tests, the thing runs for 9 hours and 49 minutes, way longer than the average 6-cell running time of 6 hours and 10 minutes.

Head on over to Laptop Mag to get their full impressions. [Laptop Mag via @mspoonauer]

Send an email to Chris Jacob, the author of this post, at cjacob@gizmodo.com.