Xeon E 2136 Advantages
Higher base frequency (3.3GHz vs 2.3GHz)
Lower TDP (80W vs 150W)
Xeon 6515P Advantages
Released 6 years and 7 months late
Higher specification of memory (6400 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (72MB vs 12MB)
More modern manufacturing process (5nm vs 14nm)