Xeon E 2134 's Advantages
Released 9 years and 3 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2GHz)
Larger L3 cache size (8MB vs 6MB)
More modern manufacturing process (14nm vs 45nm)
Opteron 13KS EE 's Advantages
Lower TDP (50W vs 71W)