Xeon 6979P 's Advantages
Released 11 years late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (504MB vs 20MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E5 2640 v2 's Advantages
Lower TDP (95W vs 500W)