Intel Xeon E3 1285 v4 's Advantages
Released 3 years and 1 months late
Higher specification of memory (DDR3-1866 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.4GHz)
Lower TDP (95W vs 115W)
Opteron 6278 's Advantages
Larger L3 cache size (8MB vs 6MB)