Opteron 6308 's Advantages
Higher base frequency (3.5GHz vs 3.4GHz)
Larger L3 cache size (8MB vs 6MB)
Intel Xeon E3 1285L v4 's Advantages
Released 2 years and 7 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 115W)