Xeon E3-1271 v3 3.6GHz Quad-Core S1150 CPU
3.6GHz 4-Core - 8 Threads - 4.0GHz Turbo - Socket LGA 1150 / H3 - 4 x 256KB L2 Cache - 8MB L3 Cache - 80W TDP - Intel VT-x / VT-d Virtualization - Haswell 22nm - Retail Box w/ Heatsink & Fan - 3 Year Depot Carry-In Mfg. Warranty
Xeon E5603 1.6GHz Quad-Core LGA1366 80W (Tray)
1.6GHz 4-Core - 4 Threads - Socket LGA 1366 / B - 2-Way SMP - 4 x 256KB L2 Cache - 4MB L3 Cache - 80W TDP - Intel VT-x / VT-d / VT-c Virtualization - Westmere-EP 32nm - OEM/TRAY w/o Heatsink & Fan - No Mfg. Warranty