Intel Xeon W 2155 's Advantages
Higher base frequency (3.3GHz vs 2.5GHz)
Lower TDP (140W vs 270W)
Intel Xeon W 3375 's Advantages
Released 3 years and 11 months late
Higher specification of memory (3200 vs 2666)
Newer PCIe version (4 vs 3)
Larger L3 cache size (57MB vs 13.75MB)
More modern manufacturing process (10nm vs 14nm)