Intel Xeon W3690 's Advantages
Higher base frequency (3.466GHz vs 2.3GHz)
Lower TDP (130W vs 145W)
Xeon 6516P B 's Advantages
Released 14 years late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (80MB vs 12MB)
More modern manufacturing process (5nm vs 32nm)