Xeon EC5539 's Advantages
Higher specification of memory (1333 vs 4)
Higher base frequency (2.266GHz vs 2.2GHz)
Lower TDP (65W vs 165W)
Xeon Platinum 8276 's Advantages
Released 8 years and 10 months late
Larger L3 cache size (38.5MB vs 4MB)
More modern manufacturing process (14nm vs 45nm)