>AWS represents the computing power of its machines in Elastic Compute Units, and 4 ECUs represent more or less the power of a modern CPU. What does the author

>AWS represents the computing power of its machines in Elastic Compute Units, and 4 ECUs represent more or less the power of a modern CPU. What does the author mean by the "power of modern CPU"? What which microarchitecture? Which generation? How many cores? In 2019 I had a Ryzen 9 3900X with 12 cores. Was that a modern CPU? How many Amazon ECU would that take to be equivalent? It seems to me he assumed all the CPUs were equally powerful at the time he wrote the article.