Enjoy high performance and efficiency with the ASUS (A53U-ES21) notebook. Powered by the AMD Dual-Core E-450 processor at 1.65 GHz, this notebook is ideal for business and casual users. Also, the performance of this 15.6-inch notebook is augmented by 4 GB DDR3 SDRAM, which can easily handle multitasking, especially with business applications. For better visualization, the ASUS (A53U-ES21) notebook features an LED backlit display with a 1366x768 (HD) resolution. Moreover, the AMD Radeon HD 6320 graphics processor allows this 15.6-inch notebook to run multimedia applications. With the 320 GB HDD/5400 RPM hard drive capacity, you can store all your business documents in this notebook without the need for external disk drives. What's more, the ASUS (A53U-ES21) notebook also features the Microsoft Windows 7 Home Premium 64-bit Edition operating system for refined operations.