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 E5620 2.4GHz Quad-Core LGA1366 (Tray)
2.4GHz 4 Core - 8 Threads - 2.66GHz Turbo - Socket LGA 1366 / B - 2-Way SMP - Supports DDR3-1066 Memory - 4 x 256KB L2 Cache - 12MB L3 Cache - 80W TDP - Intel VT-x / VT-d / VT-c Virtualization - Westmere-EP 32nm - OEM/TRAY w/o Heatsink & Fan