Intel Xeon E5 2603 's Advantages
Lower TDP (80W vs 235W)
Xeon 6726P B 's Advantages
Released 12 years and 11 months late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.3GHz vs 1.8GHz)
Larger L3 cache size (168MB vs 10MB)
More modern manufacturing process (5nm vs 32nm)