For example on Google Cloud, Windows Server images on some machine types are charged based on the number of CPUs, i.e., n1-standard-4, n1-highcpu-4, and n1-highmem-4 are machine-types with 4 vCPUs, and are charged at $0.16 USD/hour (4 times $0.04 USD/hour). https://github.com/miranda-zhang/cloud-computing-schema/blob/master/example/gcloud/os.md#windows-server-images