Processor: AMD Opteron™ Barcelona 2352 (2.1 GHz, 75 Watts) (1, up to 2) Cache Memory: 2MB L2 cache Memory: 2048 MB (2*1024MB) Standard, to 32 GB (Maximum) PC2-5300 DDR2 DIMMs Network Controller: NC373i Multifunction Gigabit Server Adapters (2x10/100/1000) Storage Controller: Smart Array E200i/64 MB (RAID 0/1/1+0) Hard Drive: optinal 2.5` up to 4 Internal Storage: Up to 876GB SAS (with optional hard drives) Optical Drive: CD-RW combo Power Supply: single Form Factor: Rack (1U)