Xeon 6979P 's Advantages
Released 12 years and 4 months late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 8MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E3 1220L v2 's Advantages
Higher base frequency (2.3GHz vs 2.1GHz)
Lower TDP (17W vs 500W)