Xeon X3430 's Advantages
Lower TDP (95W vs 200W)
Intel Xeon w5 2455X 's Advantages
Released 13 years and 5 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3.2GHz vs 2.4GHz)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)