Intel Xeon E5 4650 v3 's Advantages
Higher base frequency (2.1GHz vs 1.8GHz)
Larger L3 cache size (30MB vs 22.5MB)
Lower TDP (105W vs 125W)
Intel Xeon Bronze 3408U 's Advantages
Released 7 years and 7 months late
Higher specification of memory (DDR5-4000 vs DDR4-2133)
Newer PCIe version (5 vs 3)
More modern manufacturing process (10nm vs 22nm)