Intel Xeon E3 1285 v4 's Advantages
Released 4 years and 2 months late
Higher specification of memory (1866 vs 1333)
Higher base frequency (3.5GHz vs 2GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (95W vs 105W)
Xeon E7 2820 's Advantages
Larger L3 cache size (18MB vs 6MB)