There&#x27;s not really any significant room for improvement on <i>any</i> of those factors. You might be able to save a rack unit or two, and several watts by replacing hard drives with a SSD, but if you don&#x27;t have 50 boxes to consolidate, you&#x27;re still facing the baseline cost of having a box taking up some amount of physical space and requiring several watts of power. Unless you make the much bigger up-front investment of migrating to a shared hosting platform.