Xeon EC5539 's Advantages
Higher base frequency (2.266GHz vs 1.8GHz)
Lower TDP (65W vs 125W)
Intel Xeon Bronze 3408U 's Advantages
Released 12 years and 11 months late
Higher specification of memory (4000 vs 1333)
Newer PCIe version (5 vs 2)
Larger L3 cache size (22.5MB vs 4MB)
More modern manufacturing process (10nm vs 45nm)