Intel Xeon E5 4655 v3 's Advantages
Higher base frequency (2.9GHz vs 2.1GHz)
Lower TDP (135W vs 165W)
Intel Xeon Gold 6338T 's Advantages
Released 5 years and 10 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Larger L3 cache size (36MB vs 30MB)
More modern manufacturing process (10nm vs 22nm)