Intel Xeon E5 1681 v3 's Advantages
Released 5 years late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon X3470 's Advantages
Higher base frequency (2.933GHz vs 2.9GHz)
Lower TDP (95W vs 135W)