Intel Xeon E5 1620 's Advantages
Higher base frequency (3.6GHz vs 3.5GHz)
Xeon E 2146G 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (12MB vs 10MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (80W vs 130W)