Intel® Xeon® Processor E5507 (4M Cache, 2.26 GHz, 4.80 GT/s Intel® QPI)

Intel Xeon DP X5570 Quad Core 2.93GHz 6.4 GT/s /8MB L3 Cache

Intel® Xeon® Processor X5550 (8M Cache, 2.66 GHz, 6.40 GT/s Intel® QPI)

Intel® Xeon® Processor E5540 (8M Cache, 2.53 GHz, 5.86 GT/s Intel® QPI)

Intel® Xeon® Processor X5560 (8M Cache, 2.80 GHz, 6.40 GT/s Intel® QPI)

Intel® Xeon® Processor E5530 (8M Cache, 2.40 GHz, 5.86 GT/s Intel® QPI)

Intel® Xeon® Processor E5520 (8M Cache, 2.26 GHz, 5.86 GT/s Intel® QPI)

Intel Xeon E5506 Quad Core 2.13Ghz ,4MB L3 Cache ,4.8 GT/s

Intel® Xeon® Processor E5503 (4M Cache, 2.00 GHz, 4.80 GT/s Intel® QPI)