E5420 - Intel Xeon E5420 Quad Core 2.50GHz 1333MHz FSB 12MB L2 Cache Processor

E5430 - Intel Xeon E5430 Quad Core 2.66GHz 1333MHz FSB 12MB L2 Cache Processor

E5440 - Intel Xeon E5440 Quad Core 2.83GHz 1333MHz FSB 12MB L2 Cache Processor

E5450 - Intel Xeon E5450 Quad Core 3.00GHz 1333MHz FSB 12MB L2 Cache Processor

E5462 - Intel Xeon E5462 Quad Core 2.80GHz 1600MHz FSB 12MB L2 Cache Processor

E5472 - Intel Xeon E5472 Quad Core 3.00GHz 1600MHz FSB 12MB L2 Cache Processor

E5500 - Intel Pentium E5500 Dual Core 2.80GHz 800MHz FSB 2MB L3 Cache Processor

E5502 - Intel Xeon E5502 Dual Core 1.86GHz 4.80GT/s QPI 4MB L3 Cache Processor

E5503 - Intel Xeon E5503 Dual Core 2.00GHz 4.80GT/s QPI 4MB L3 Cache Processor

E5504 - Intel Xeon E5504 Quad Core 2.00GHz 4.80GT/s QPI 4MB L3 Cache Processor

E5506 - Intel Xeon E5506 Quad Core 2.13GHz 4.80GT/s QPI 4MB L3 Cache Processor

E5507 - Intel Xeon E5507 Quad Core 2.26GHz 4.80GT/s QPI 4MB L3 Processor