Intel Xeon E5 2403 's Advantages
Lower TDP (80W vs 270W)
Intel Xeon Gold 6538N 's Advantages
Released 11 years and 7 months late
Higher specification of memory (DDR5-5200 vs DDR3)
Higher base frequency (2.1GHz vs 1.8GHz)
Larger L3 cache size (60MB vs 10MB)
More modern manufacturing process (10nm vs 32nm)