Intel Xeon E3 1284L v4 's Advantages
Released 2 years and 7 months late
Higher specification of memory (DDR3-1866 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.9GHz vs 2.4GHz)
Lower TDP (47W vs 115W)
Opteron 6378 's Advantages
Larger L3 cache size (8MB vs 6MB)