Xeon 6979P 's Advantages
Released 15 years late
Higher specification of memory (8800 vs 1333)
Newer PCIe version (5 vs 2)
Larger L3 cache size (504MB vs 8MB)
More modern manufacturing process (5nm vs 45nm)
Xeon X3430 's Advantages
Higher base frequency (2.4GHz vs 2.1GHz)
Lower TDP (95W vs 500W)