Intel Xeon E5 2640 v2 's Advantages
Lower TDP (95W vs 160W)
Xeon 6543P B 's Advantages
Released 11 years and 5 months late
Higher specification of memory (5600 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (128MB vs 20MB)
More modern manufacturing process (5nm vs 22nm)