D45XK – Dell 2.40GHz LGA2011 Xeon E5-2609 4-Core Processor

HP NF151AA 2.66GHz 6.40GT/s QPI 8MB L3 Cache Socket FCLGA1366 Intel Xeon X5550 Quad-core (4 Core) Processor

HP KY198AA 3.00GHz 1333MHz FSB 6MB L2 Cache Socket LGA771 Intel Xeon E5240 Dual-core (2 Core) Processor Kit For xw6600/xw8600 Workstation

HP NF150AA 2.53GHz 5.86GT/s QPI 8MB L3 Cache Socket FCLGA1366 Intel Xeon E5540 Quad-core (4 Core) Processor Kit For Z600/Z800 Workstation

HP NF147UT 2.13GHz 4.80GT/s QPI 4MB L3 Cache Socket FCLGA1366 Intel Xeon E5506 Quad-core (4 Core) Processor