Processor Intel Pentium 4 processor 530 with HT Technology (1MB cache L2, 3.0Ghz, 800MHz FSB), Max 3.6GHz Mother Board Chipset Intel E7210 with system bus 800MHz, PCI-X; NIC GB Memory 512MB DDR 400MHz ECC register. Support max 4GB Hard Disk 3 x SATA 150 80GB. Support Max 3HDD Intenal Raid 0/1 Power Supply 2 x 250watts, 9 fans cooling. Size Rack 1U Software ISM; Microsoft Windows Server 2003; Redhat Linux Enterprise 3.0; Caldera Open Unix 8.0