0056D – Dell 200MHz 66MHz FSB 256KB L2 Cache Socket 8 Intel Pentium Pro Single-Core (1 Core) Processor

HP NF146AA 2.00GHz 4.80GT/s QPI 4MB L3 Cache Socket FCLGA1366 Intel Xeon E5504 Quad-core (4 Core) Processor Kit For Z600/Z800 Workstation

HP FP477AA 3.40GHz 1600MHz FSB 12MB L2 Cache Socket LGA771 Intel Xeon X5492 Quad-core (4 Core) Processor

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

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