HP 732144-001 - System I/O board (motherboard) - Includes subpan - This system I/O board is capable of using either the E5-2600 (Sandy Bridge) or E5-2600 v2 (Ivy Bridge) series of processors Retail
HP 504583-001 - Intel Xeon X5530 Quad-Core 64-bit processor - 2.40GHz (Nehalem-EP, 8MB Level-3 cache, Intel QuickPath interconnect (QPI) speed 6.4 GT/s, 60 watt thermal design power (TDP), socket FCLGA 1366) Retail