The U31SD-DH31 13.3" Laptop Computer (Black) from ASUS is a compact notebook computer with a streamlined aluminum chassis. The system is built with portability in mind. It is less than an inch thin when closed and weighs a scant 4 pounds. What's more, it can run for up to 10 hours on a single charge thanks to an 8-cell battery and the ASUS Super Hybrid Engine power management system.
Graphics are handled by an nVIDIA/Intel hybrid system. The computer uses a dedicated nVIDIA GeForce GT 520M GPU with 1GB of memory when performance is required. It switches to an integrated Intel GMA HD GPU during normal operation, helping to extend battery life.
The computer is powered by a 2.1GHz Intel Core i3-2310M processor, which delivers dual-core performance for multitasking. It boasts 4GB of RAM, a 640GB 5400rpm hard drive, 802.11b/g/n Wi-Fi, Bluetooth 3.0+HS, an integrated webcam and microphone as well as built-in Altec Lansing stereo speakers. Windows 7 Home Premium (64-bit) is the installed operating system.