HP Integrity rx2620 1.60 GHz 3 MB Base System. Motherboard chipset: HP zx1. Hard drive rotational speed: 15K rpm (36 GB); 15K rpm (73 GB); 10K rpm (146 GB); 10K rpm (300 GB). Maximum internal memory: 32 GB. Weight: 25000 g. Storage temperature range (T-T): -40 - 70 °C, Operating temperature range (T-T): 5 - 35 °C, Relative humidity: 15 - 80 %