Intel Xeon E5 4620 's Advantages
Newer PCIe version (3 vs 2)
Larger L3 cache size (16MB vs 8MB)
Opteron 6328 's Advantages
Released 6 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (3.2GHz vs 2.2GHz)
Lower TDP (115W vs 130W)