Xeon E5 2650 v4 's Advantages
Higher base frequency (2.2GHz vs 2.1GHz)
Lower TDP (105W vs 500W)
Xeon 6979P 's Advantages
Released 8 years and 6 months late
Higher specification of memory (8800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 30MB)
More modern manufacturing process (5nm vs 14nm)