A server rack typically draws between 10-60 amps, depending on its power density, hardware type, and configuration. Understanding kilowatts per rack (kW/rack) is important for businesses using colocation. It helps improve efficiency and control costs. Just like virtual CPUs (vCPUs) relate to physical CPUs in cloud computing, kW/rack defines power use per server rack. Power consumption directly affects operational costs, cooling requirements, and infrastructure planning. Everything in the server world is getting smarter and faster, and this includes one of the basic parts of the server: the Power Supply Unit (PSU).