Intel Xeon Platinum 8276 's Advantages
Released 4 years and 1 months late
Larger L3 cache size (38.5MB vs 25MB)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E5 2666 v3 's Advantages
Higher specification of memory (DDR4-2133 vs DDR4)
Higher base frequency (2.9GHz vs 2.2GHz)
Lower TDP (135W vs 165W)