Xeon 6979P 's Advantages
Released 13 years and 7 months late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (504MB vs 12MB)
More modern manufacturing process (5nm vs 32nm)
Intel Xeon X5647 's Advantages
Higher base frequency (2.933GHz vs 2.1GHz)
Lower TDP (130W vs 500W)