Opteron 3320 EE 's Advantages
Higher base frequency (1.9GHz vs 1.8GHz)
Larger L3 cache size (8MB vs 6MB)
Lower TDP (25W vs 47W)
Intel Xeon E3 1258L v4 's Advantages
Released 2 years and 6 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)