Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 3.4GHz)
Larger L3 cache size (10MB vs 8MB)
Intel Xeon E 2334 's Advantages
Released 7 years late
Higher specification of memory (DDR4-3200 vs DDR4-2133)
Newer PCIe version (4 vs 3)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 140W)