Xeon E7-8880L v3 2.0GHz 18-Core (Tray)
2.0GHz 18-Core - 36 Threads - 2.8GHz Turbo - Socket LGA 2011 / R - 8-Way SMP - Supports DDR3-1600/DDR4-1866 Memory - 18 x 256KB L2 Cache - 45MB L3 Cache - 115W TDP - Intel VT-x/VT-d Virtualization - Haswell-EX 22nm - OEM w/o Heatsink & Fan - No Mfg. Warranty
Xeon E5-4640 v2 2.2GHz Ten-Core (Tray)
2.2GHz 10-Core - 20 Threads - 2.7GHz Turbo - Socket LGA 2011 / R - 4-Way SMP - Supports DDR3-1866 Memory - 10 x 256KB L2 Cache - 20MB L3 Cache - 95W TDP - Intel VT-x/VT-d/VT-c Virtualization - Ivy Bridge-EP 22nm - OEM w/o Heatsink & Fan - No Mfg. Warranty