IBM (81Y7121) – Intel Xeon Processor E5-2650Lv3 12C 1.8 GHz 30MB Cache 2133MHz 65W for x3500 M5

IBM (7158IGA) – x3630 M4, Intel Xeon E5-2407 4C 2.2GHz 10MB Cache 1066MHz 80W, 1 x 4GB (1x4GB, 2Rx8, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz LP RDIMM Memory (6 DIMM slots per Processor and Max 12 x DIMM Slots), 12 x 3.5″ Hot Swap SATA HDDs (Max 8 HDD Bays), 2 x PCI-E Slots ( x8 FH/FL + x8 FH/HL) + 2 PCI-E x8 Low Profile Slots, 4 GbE Network Ports, ServeRAID M5110 with M5100 1GB Flash and Supercap (RAID-0/1/5/10/50), No internal Optical Drive Support, Integrated Management Module (iMM), 1 x 750W High Efficiency Platinum AC Power Supply (Max 2), 3Yrs Warranty