Processor: Intel Xeon 5420 QuadCore 2.50GHz/1333MHz (1, up to 2) Cache Memory: 12MB L2 cache Memory: 1GB (2x512MB) Standard, to 16 GB (Maximum) FBD PC2-5300 Network Controller: Embedded NC373i Multifunction Gigabit Server Adapter (1x10/100/1000) Storage Controller: Smart Array E200i/64MB Controller (RAID 0/1/1+0) Hard Drive: optional LFF (3.5`) SAS HDD (up to 6) Internal Storage: 1.80TB LFF SAS; 4.50TB LFF SATA Optical Drive: DVD-ROM Power Supply: single, 1+1 hot-swap optional Form Factor: Tower (optional rack 5U)