Intel Xeon W 2155 's Advantages
Released 4 years and 8 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (3.3GHz vs 2.6GHz)
Larger L3 cache size (13.75MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Opteron 43GK HE 's Advantages
Lower TDP (65W vs 140W)