Final answer:
When using vCenter Server with an embedded Platform Services Controllers (PSC) on Windows, the minimum host requirements exceed 2 GB and 4 GB of RAM options, and while 2 vCPUs may be sufficient for small environments, the requirements could be higher depending on the scale.
Step-by-step explanation:
When configuring vCenter Server on Windows with the embedded Platform Services Controllers (PSC), neither 2 GB of RAM nor 4 GB of RAM is correct for minimum host requirements. Instead, you would be looking at requirements that exceed both of these options. Historically, standard minimum requirements for a vCenter Server with an embedded Platform Services Controller included at least 8 GB of RAM, but for vSphere 6.5 and later, VMware recommends a minimum of 10 GB of RAM. Furthermore, minimum CPU requirements generally recommend 2 vCPUs for small environments but can be higher based on the scale of the deployment.
In short, for current versions of vCenter Server with an embedded PSC, the minimum host requirements are more than the options provided; you should consult the official documentation for the specific version you are deploying to get the exact requirements.