Intel Xeon E5 4669 v3 's Advantages
Higher base frequency (2.1GHz vs 2GHz)
Lower TDP (135W vs 160W)
Xeon 6543P B 's Advantages
Released 9 years and 8 months late
Higher specification of memory (5600 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (128MB vs 45MB)
More modern manufacturing process (5nm vs 22nm)