Intel Xeon E5 2660 v2 's Advantages
Larger L3 cache size (25MB vs 18MB)
Xeon E 2456 's Advantages
Released 10 years and 3 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Higher base frequency (3.3GHz vs 2.2GHz)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 95W)