Intel Xeon E5 2690 's Advantages
Higher base frequency (2.9GHz vs 2.8GHz)
Lower TDP (135W vs 165W)
Intel Xeon E5 2698A v3 's Advantages
Released 2 years and 8 months late
Higher specification of memory (2133 vs 3)
Larger L3 cache size (40MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)