Intel Xeon E5 1681 v3 's Advantages
Larger L3 cache size (25MB vs 18MB)
Intel Xeon W 11855M 's Advantages
Released 6 years and 8 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Higher base frequency (3.2GHz vs 2.9GHz)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (35W vs 135W)