Intel Xeon E5 2603 v2 's Advantages
Lower TDP (80W vs 105W)
Xeon E5 2650 v4 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (2.2GHz vs 1.8GHz)
Larger L3 cache size (30MB vs 10MB)
More modern manufacturing process (14nm vs 22nm)