Opteron 6278 's Advantages
Lower TDP (115W vs 125W)
Xeon W 1390P 's Advantages
Released 9 years late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 2)
Higher base frequency (3.5GHz vs 2.4GHz)
Larger L3 cache size (16MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)