CPU: 2x Intel Xeon Quad Core E5620 2.4Ghz, 12MB
RAM: 16GB (2x8GB) PC3 1333Mhz ECC RDIMM
HDD: 2 x 600Gb 10k ( SP 8x HDD 2.5″)
DVD: Option
RAID: ServeRAID M1015 Raid 0,1,10
NIC: Integrated Dual-port Ethernet
Power Supply: 2x 675Watts Hotswap
Rail kit: Yes

CPU: 2 x Intel Xeon 6 Core E5-2620 (15M Cache, 2.0GHz)
RAM: 16GB (2x8GB) PC3 1333/1600Mhz RDIMM
HDD: 2 x IBM 600GB 10k ( sp 8x HDD 2.5″; upto 16x HDD 2.5″)
DVD: Option
RAID: ServeRaid M5110 512MB RAID (0,1,5,10,50)
NIC: Quad port 1GB Gigabit Ethernet
Power Supply: 1x 550Watts PS HS
Rail kit: yes