Intel Xeon E5 2665 Advantages
Larger L3 cache size (20MB vs 6MB)
Intel Xeon E3 1285L v4 Advantages
Released 3 years and 3 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (3.4GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 115W)