P026R - Dell - INTEL Xeon X5570 Quadcore 2.93Ghz 1Mb L2 Cache 8Mb L3 Cache 6.4GT/S Qpi Socketb(LGa1366) 45Nm 95W Processor Only

506012-001 - HP - Hp Intel Xeon X5570 Quadcore 2.93Ghz 1Mb L2 Cache 8Mb L3 Cache 6.4Gt/S Qpi Speed Socket Fclga1366 45Nm 95W Processor Only

44T1882 - IBM - Intel Xeon X5570 Quad Core 2.93GHz 1MB L2 Cache 8MB L3 Cache 6.4GT/s QPI Socket B(LGA-1366) 45NM 95W Processor

536893-001 - HP - INTEL Xeon E5520 Quadcore 2.26Ghz 1Mb L2 Cache 8Mb L3 Cache 5.86GT/S Qpi Socketb(LGa1366) 45Nm 80W Processor Only For Server

46C7873 - IBM - INTEL Xeon E5540 Quadcore 2.53Ghz 1Mb L2 Cache 8Mb L3 Cache 5.86GT/S Qpi Socketb(LGa1366) 45Nm 80W Processor Only For Systems X3400 M2, X3500 M2, X3400 M3, X3500 M3

K023J - Dell - Intel Xeon X5560 Quad-core 2.8ghz 1mb L2 Cache 8mb L3 Cache 6.4gt/s Qpi Socket-b(lga-1366) 45nm 95w Processor Only

317-1308 - Dell - INTEL Xeon E5506 Quadcore 2.13Ghz 1Mb L2 Cache 4Mb L3 Cache 4.8GT/S Qpi Socket B(LGa1366) 45Nm 80W Processor Only