Gateway DX4200-09 Desktop, Phenom X4 9100e 64-bit Quad-Core Processor, 4GB, 640GB, 18X DVD+/-R/RW, Keyboard and Mouse, Windows Vista Home Premium (64-bit), Refurbished AMD Phenom II X4 Quad Core 9100E Processor 1.8GHz 4GB DDR2 RAM 640GB Hard Drive ATI Radeon HD 3200 Windows Vista Home Permium 64-Bit