Intel Xeon E5 1680 v3 's Advantages
Larger L3 cache size (20MB vs 18MB)
Xeon E 2456 's Advantages
Released 9 years and 3 months late
Higher specification of memory (DDR5-4800 vs DDR4-2133)
Newer PCIe version (5 vs 3)
Higher base frequency (3.3GHz vs 3.2GHz)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 140W)