Intel Xeon E5 2666 v3 's Advantages
Higher base frequency (2.9GHz vs 2GHz)
Larger L3 cache size (25MB vs 16MB)
Xeon E 2278GEL 's Advantages
Released 4 years and 7 months late
Higher specification of memory (2666 vs 2133)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (35W vs 135W)