Intel Xeon E 2388G 's Advantages
Released 6 years and 10 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Higher base frequency (3.2GHz vs 2.9GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (95W vs 135W)
Intel Xeon E5 2666 v3 's Advantages
Larger L3 cache size (25MB vs 16MB)