Intel Xeon E3 1280 v5 's Advantages
Higher base frequency (3.7GHz vs 2.7GHz)
Lower TDP (80W vs 325W)
Xeon w7 3555 's Advantages
Released 8 years and 10 months late
Higher specification of memory (4800 vs 4)
Newer PCIe version (5 vs 3)
Larger L3 cache size (75MB vs 8MB)
More modern manufacturing process (10nm vs 14nm)