Intel Xeon E5 2403 v2 's Advantages
Lower TDP (80W vs 160W)
Xeon 6543P B 's Advantages
Released 11 years and 5 months late
Higher specification of memory (5600 vs 3)
Higher base frequency (2GHz vs 1.8GHz)
Larger L3 cache size (128MB vs 10MB)
More modern manufacturing process (5nm vs 22nm)