HP Pavilion Elite M9600T Desktop Intel(R) Core(TM) i7-920 processor (2.66GHz, 1MB L2 + 8MB shared L3 cache with QPI Technology), 6 GB DDR3-1066MHz SDRAM 640GB 7200 rpm SATA 3Gb/s hard drive, LightScribe 16X max. DVD+/-R/RW SuperMulti drive Gigabit Ethernet; 512MB ATI Radeon HD 4350 [DVI, HDMI, VGA adapter] Connectivity: 6 USB (2 front), 2 IEEE 1394 (1 front), 2 e-SATA (back), 1 VGA, 1 HDMI, 1 DVI, digital audio output Pre-installed with Windows Vista Home Premium with SP1 (64-bit version); includes keyboard and mouse