Intel Xeon E5 1680 v2 's Advantages
Higher base frequency (3GHz vs 2.5GHz)
Lower TDP (130W vs 270W)
Intel Xeon w7 3455 's Advantages
Released 9 years and 5 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (67.5MB vs 25MB)
More modern manufacturing process (10nm vs 22nm)