Intel Xeon E5 2658A v3 's Advantages
Released 2 years and 10 months late
Higher specification of memory (2133 vs 3)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (105W vs 115W)
Intel Xeon E5 2665 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)