Intel Xeon E5 2603 's Advantages
Lower TDP (80W vs 125W)
Intel Xeon Bronze 3408U 's Advantages
Released 10 years and 10 months late
Higher specification of memory (4000 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (22.5MB vs 10MB)
More modern manufacturing process (10nm vs 32nm)