Opteron 6348 's Advantages
Higher base frequency (2.8GHz vs 2.4GHz)
Lower TDP (115W vs 500W)
Xeon 6972P 's Advantages
Released 11 years and 10 months late
Higher specification of memory (8800 vs 1866)
Newer PCIe version (5 vs 2)
Larger L3 cache size (480MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)