At 4.9 lb. and 0.8-in. thick, the Lenovo IdeaPad U510 just sneaks in under the Ultrabook size limits. It offers a generous 15.6-in. display with a 1366 x 768 resolution (without a touch option) that's powered by an Nvidia GeForce 625M graphics engine and 1GB of dedicated video RAM. The U510 can be ordered with an Ivy Bridge processor, up to 8GB of RAM and a 1TB hard drive that can be augmented with either 24GB or 32GB of ExpressCache. The snazzy system boasts a matte silver finish and a built-in DVD drive.