Intel® Xeon® Processor E5520 (2.26 GHz, 8MB L3 Cache, 80W, DDR3-1066, HT, Turbo 1/1/2/2)/ 6GB (3 x 2GB) PC3-10600R (DDR3-1333) Registered DIMMs/ Embedded NC326i PCI Express Dual Port Gigabit Server Adapter/ HP Smart Array P410i/256MB Controller/ HP Half-Height SATA DVD-ROM Optical Drive/ Six expansion slots (six PCI-Express Gen2)/ 750 Watt Hot-Plug (Redundancy enabled) power supply/ 2 fans ship standard/ Form Factor: Tower (5U)