1. A system comprising: an electrical device configured to operate responsive to at least one supply voltage; and a controller configured to determine a magnitude of the supply voltage to the electrical device to be requested during operation of the electrical device, wherein the magnitude is determined based on a history of one or more parameters that are related to aging experienced by the device and further based on a device-specific age model that determines aging effects on the electrical device based on the one or more parameters, wherein the device-specific aging model is determined by testing physical instances of the electrical device that have been manufactured, wherein: the magnitude of the supply voltage for the electrical device excludes a voltage magnitude guardband for lifetime reliability at initial power up of the electrical device; the controller is configured to monitor the one or more parameters during operation of the electrical device; and the controller is configured to increase the magnitude of the supply voltage over time based on monitoring aging effects in the electrical device as indicated by the device-specific aging model evaluated over the one or more parameters detected during the monitoring and determining the increase in the magnitude of the supply voltage from the device-specific aging model.