The choice of power supply when assembling a Desktop PC depends on many factors: model, manufacturer, capacity, etc. However, it is also important to understand how much the components we choose to assemble our computer will actually consume in terms of power.
Normally, power consumption values are also given in the technical specifications of each component. For less experienced users, however, this information may not be easy to find or not easy to understand.
To solve this problem, there are several web portals on the Internet that offer a free PSU Calculator service.
One such site is pc-builds.com, which offers a page dedicated to this service. In fact, it is enough to enter the name of the components we are going to mount in the case of our Desktop PC and we will be advised which power supply is appropriate to buy in terms of maximum power output.
It is a good rule of thumb, however, once the total consumption of the components has been found, to buy a power supply that has a maximum power output of almost twice the calculated consumption, both to make the most of the potential of our hardware and to prevent our power supply from malfunctioning, especially in configurations designed for gaming.