Intel Xeon W 2123 's Advantages
Higher base frequency (3.6GHz vs 3GHz)
Lower TDP (120W vs 250W)
Intel Xeon W 3345 '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 (36MB vs 8.25MB)
More modern manufacturing process (10nm vs 14nm)