Xeon E5420 2.5GHz S771 w/o Fan
Xeon E5420 2.5GHz Quad-Core Socket 771 (Dual-Processor) - 1333MHz FSB - 2x6MB L2 Cache - Intel64 - Intel Virtualization Technology (VT-x) - 80W TDP - Retail Box w/ Passive Heatsink - Socket LGA 771 / J
Xeon E7-4830 v2 2.2GHz Ten-Core (Tray)
2.2GHz 10-Core - 20 Threads - 2.7GHz Turbo - Socket LGA 2011-1 / R2 - 4-Way SMP - Supports DDR3-1600 Memory - 10 x 256KB L2 Cache - 20MB L3 Cache - 105W TDP - Intel VT-x/VT-d/VT-c Virtualization - Ivy Bridge-EX 22nm - OEM w/o Heatsink & Fan - No Mfg. Warranty