Intel Xeon E5 4620 v3 's Advantages
Higher specification of memory (DDR4-1866 vs DDR3-1866)
Larger L3 cache size (25MB vs 6MB)
Intel Xeon E3 1283L v4 's Advantages
Higher base frequency (2.9GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 105W)