Intel Xeon E5 2650 's Advantages
Lower TDP (95W vs 105W)
Intel Xeon E5 4650 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)