1 x Quad Core Intel® Xeon® E5606 (2.13GHz) Processor (8MB L3 Cache, 80W, DDR3-1333, HT, Turbo 1/1/2/2/3/3) Intel® 5520 Server Chipset with 2 Processors Support 4GB (1 x 4GB) PC3-10600R DDR3-1333 Registered DIMMs Support up to 8 LFF 3.5” Hard Drives (with Optional Drive Cage) HP Smart Array P410i/Zero Controller (RAID 0/1/1+0) HP 16x DVD-ROM Drive; No Floppy Drive Integrated NC326i PCI Express Dual Port Gigabit NIC Integrated ATI RN50 64MB Video Controller 6 PCI Express Gen2 Expansion Slots Includes HP Insight Foundation & Proliant Onboard Administrator Supports Windows, RHEL, SLES, OEL, NetWare, VMware & Citrix 460Watts Hot Plug Power Supply; 3 x System Fans HP Standard Keyboard; HP PS/2 Scroll Mouse Dimensions: 18.5 x 8.59 x 23.46 in; Weight: 24.5 kg min. 5U Tower Form Factor 3 Years Manufacturer Limited Warranty