Intel Xeon E5 2665 's Advantages
Higher base frequency (2.4GHz vs 2.2GHz)
Lower TDP (115W vs 165W)
Intel Xeon Platinum 8276 's Advantages
Released 6 years and 9 months late
Higher specification of memory (DDR4 vs DDR3)
Larger L3 cache size (38.5MB vs 20MB)
More modern manufacturing process (14nm vs 32nm)