HP workstation xw4100 P4 2.6GHz 512MB/80GB IDE ATA/100 No graphics DVD/CDRW Combo WXP Pro. Processor clock speed: 2600 MHz, Processor front side bus: 800 MHz, Motherboard chipset: Intel 875P. Internal memory: 512 MB, Internal memory type: DDR, Maximum internal memory: 4000 MB. Hard drive capacity: 80 GB. Maximum graphic adapter memory: 64 MB. Operating relative humidity range: 15 - 80 %, Operating temperature range (T-T): 10 - 35 °C, Storage temperature range (T-T): 50 - 95 °C