2123C – Dell 350MHz 100MHz FSB 512KB L2 Cache Socket SECC Intel Pentium II Single-Core (1 Core) Processor

HP KY116AA 3.40GHz 1600MHz FSB 6MB L2 Cache Socket LGA771 Intel Xeon X5272 Dual-core (2 Core) Processor

HP NF153AA 2.93GHz 6.40GT/s QPI 8MB L3 Cache Socket FCLGA1366 Intel Xeon X5570 Quad-core (4 Core) Processor

HP NF148AA 2.26GHz 5.86GT/s QPI 8MB L3 Cache Socket FCLGA1366 Intel Xeon E5520 Quad-core (4 Core) Processor For Z600/Z800 Workstation

HP NF152AA 2.80GHz 6.40GT/s QPI 8MB L3 Cache Socket FCLGA1366 Intel Xeon X5560 Quad-core (4 Core) Processor For Z600/Z800 Workstation