Intel Xeon E5 1681 v3 's Advantages
Lower TDP (135W vs 240W)
Xeon w7 2565X 's Advantages
Released 9 years and 11 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (3.2GHz vs 2.9GHz)
Larger L3 cache size (37.5MB vs 25MB)
More modern manufacturing process (10nm vs 22nm)