Dell OptiPlex 780 Desktop Computer - Intel Core 2 Duo 3.00 Ghz (Certified Refurbished) This Certified Refurbished Dell product is tested & certified by a Microsoft Authorized Refurbisher to look and work like-new. The product includes all original accessories, and is backed by a 1 year warranty Core 2 Duo E8400 (6m Cache, 3.00ghz, 1333 MHz FSB) 4GB Fast DDR3 1333mhz Memory Enjoy ample storage space with a 160GB SATA Hard Drive Genuine Windows 7 pre-installed with Brand New License