Opteron 3320 EE 's Advantages
Higher base frequency (1.9GHz vs 1.8GHz)
Lower TDP (25W vs 75W)
Intel Xeon E5 2648L v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (30MB vs 8MB)