When buying a power supply you need to take into account the wattage, efficiency, rails, connectors, and modularity. Of course, not all of these are essential. If you don’t want to put in the effort, you just need to make sure that the wattage checks out and at the Power supply board has all the connectors needed to work with your Circuit.
Keep in mind that choosing a bad PC power supply board will actually do more harm than good. So having a multi-rail Power supply with some assurances of quality behind it should be high on your list of priorities.
Choosing your power supply should not be an afterthought.
A good power supply can last for many years and can have a huge impact on the efficiency of your Circuit, so take the time to choose wisely.
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