Processor: 3160 MHz, Intel, Intel® Core™2 Duo processor E8500, 1333 MHz front side bus, Intel Q43 Express. Memory: 2048 MB, 8 GB, 4 DIMM. Disk drive: 500 GB 7200 RPM. Audio: Integrated High Definition audio with Realtek ALC261 codec, internal PC speaker. Optical drive: DVD Super Multi. Operating system/software: Windows XP Professional. Networking: Integrated Intel 82567LM Gigabit Network Connection. Chassis: Micro tower. Weight & dimensions: 17.6 x 43 x 37.7 mm, 9300 g. Environmental conditions: 3048 m, -30 - 60 °C, 10 - 90 %, 10 - 35 °C, 5 - 95 %, 9144 m. Energy management: 320 W. Other features: ENERGY STAR®, EPEAT Gold™, 89PLUS Power Supply