Xeon w7 2555X 's Advantages
Released 6 years and 8 months late
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5 vs 3)
Higher base frequency (3.3GHz vs 3.2GHz)
Larger L3 cache size (33.75MB vs 11MB)
More modern manufacturing process (10nm vs 14nm)
Intel Xeon W 2140B 's Advantages
Lower TDP (120W vs 210W)