Xeon W 11955M '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 (2.1GHz vs 2GHz)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (35W vs 120W)
Intel Xeon E5 2686 v3 's Advantages
Larger L3 cache size (45MB vs 24MB)