Processor(s): (1) Dual-Core Intel Xeon 5120 Processor (1.87 GHz, 1066 FSB). Cache Memory: 4MB (1 x 4MB) Level 2 cache - 5100 Series. Memory: 1 GB (2 x 512 MB) PC2-5300 Fully Buffered DIMMs (DDR2-667) with Advanced ECC, mirrored and online spare memory capabilities. Network Controller: Embedded Dual NC373i Multifunction Gigabit NICs. Storage Controller: Smart Array E200 Controller with 64MB cache (RAID 0/1). Hard Drive: None ship standard. Optical Drive: Optional CD-ROM, DVD, DVD/CD-RW combo, DVD+R/RW or floppy drive. Form Factor: Rack (2U), (3.5-inch).