Intel Xeon E3 1285L v3 's Advantages
Higher base frequency (3.1GHz vs 1.9GHz)
Lower TDP (65W vs 250W)
Xeon 6766E 's Advantages
Released 11 years late
Higher specification of memory (6400 vs 4)
Newer PCIe version (5 vs 3)
Larger L3 cache size (108MB vs 8MB)
More modern manufacturing process (5nm vs 22nm)