Xeon E 2126G 's Advantages
Released 8 years and 5 months late
Higher specification of memory (2666 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (80W vs 130W)
Intel Xeon X5680 's Advantages
Higher base frequency (3.333GHz vs 3.3GHz)