Xeon 6979P 's Advantages
Released 12 years and 6 months late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 20MB)
More modern manufacturing process (5nm vs 32nm)
Intel Xeon E5 2687W 's Advantages
Higher base frequency (3.1GHz vs 2.1GHz)
Lower TDP (150W vs 500W)