Xeon L5639 's Advantages
Lower TDP (60W vs 80W)
Xeon E 2176G 's Advantages
Released 7 years and 5 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.7GHz vs 2.133GHz)
More modern manufacturing process (14nm vs 32nm)