HP Z640 Workstation Intel® C612 Chipset HP Z640 925W 90 Percent Efficient Chassis Win8.1 Pro 64 downgrade to Win7 Pro 64 Intel Xeon E5-2620v3 2.4 1866 6C 1stCPU 8GB DDR4-2133 (1x8GB) 1CPU RegRAM NVIDIA Quadro K2200 4GB 1st GFX 1TB 7200 RPM SATA 1st HDD HP USB Standard Keyboard HP USB Mouse HP 15-In-1 Media Card Reader 16X SuperMulti DVDRW SATA 1st ODD HP 3-3-3 Warranty HP Serial Port Adapter Kit HP Solenoid Hood Lock and Hood Sensor HP Z22i 21.5-Inch IPS Monitor (WideScreen)