Intel Xeon E5 2620 's Advantages
Lower TDP (95W vs 160W)
Xeon 6543P B 's Advantages
Released 12 years and 11 months late
Higher specification of memory (5600 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (128MB vs 15MB)
More modern manufacturing process (5nm vs 32nm)