Xeon 6979P 's Advantages
Released 16 years late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 2)
More modern manufacturing process (5nm vs 45nm)
Intel Xeon X5492 's Advantages
Higher base frequency (3.4GHz vs 2.1GHz)
Lower TDP (150W vs 500W)