Intel Xeon E5 2690 's Advantages
Lower TDP (135W vs 200W)
Intel Xeon w5 2455X 's Advantages
Released 10 years and 11 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 2.9GHz)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)