Opteron 1352 (B2) 's Advantages
Higher base frequency (2.1GHz vs 2GHz)
Lower TDP (95W vs 500W)
Xeon 6980P 's Advantages
Released 16 years and 3 months late
Higher specification of memory (8800 vs 800)
Newer PCIe version (5 vs 2)
Larger L3 cache size (504MB vs 2MB)
More modern manufacturing process (5nm vs 65nm)