Intel Xeon E3 1285 v4 's Advantages
Released 9 months late
Higher base frequency (3.5GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E5 2640 v3 's Advantages
Higher specification of memory (1866 vs 1866)
Larger L3 cache size (20MB vs 6MB)
Lower TDP (90W vs 95W)