Xeon E7 2830 's Advantages
Lower TDP (105W vs 200W)
Intel Xeon w5 2455X 's Advantages
Released 11 years and 10 months late
Higher specification of memory (4800 vs 1333)
Higher base frequency (3.2GHz vs 2.133GHz)
Larger L3 cache size (30MB vs 24MB)
More modern manufacturing process (10nm vs 32nm)