Intel Xeon E5645 's Advantages
Higher base frequency (2.4GHz vs 2.1GHz)
Lower TDP (80W vs 270W)
Intel Xeon Gold 6530 's Advantages
Released 13 years and 9 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (160MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)