Opteron 6276 's Advantages
Higher base frequency (2.3GHz vs 2.1GHz)
Lower TDP (115W vs 270W)
Intel Xeon Gold 6530 's Advantages
Released 12 years and 1 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (160MB vs 8MB)