Intel Xeon E5 1660 's Advantages
Higher base frequency (3.3GHz vs 2.8GHz)
Xeon E 2478 's Advantages
Released 11 years and 9 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (24MB vs 15MB)
More modern manufacturing process (10nm vs 32nm)
Lower TDP (80W vs 130W)