Thursday 2 July 2015

How to pick the best AC power supply


The power supply is perhaps the most misunderstood aspect of performance in a system. Most people look at wattage alone in order to determine the power that the supply contains when the truth is much more nuanced. Higher wattage does not always mean a better power source.

On the other hand, some people tend to believe that the power source that comes with the system is automatically correct. This is not always true, but since power sources do not get as much attention as graphics cards or other sexy components, the problems that incorrect power sources cause are not always fixed in a timely manner.


There are no definitive measures on how to choose the correct power supply for your system. However, there are some indicators that can provide you with circumstantial evidence of the quality of a power source.

First of all, make sure you have a power source from a reputable company. Cheap power sources give you exactly what you pay for – even power sources that are marked similarly to brand-name power sources will not perform with the same accuracy or precision.

You will always be able to tell a reputable company by the warranty that they provide you. Every power source should come with a guarantee for performance for the first few months at least. If you are having trouble researching reputable power source companies, Corsair, Seasonic, and Antec are three companies that you can depend on in a pinch.

Higher-quality power supplies are almost always heavier than their less reputable competitors. High-quality supplies need the weight for extra capacitors as well as for chokes and other internal components. There also needs to be some weight allocation for the heat dissipation mechanism. Power supplies that are able to get rid of heat more readily will perform at a higher level for a much longer period of time.


Contrary to what you may believe, a larger cooling fan that moves more air at a faster rate will actually cause less noise than a smaller fan. Do not judge the heat dissipation capabilities of a system by the amount of noise that it makes.




One of the main things that you should check with your power supply is the pinning system that comes with it. This is what will make your power supply compatible with your system as a whole; no matter how durable your power supply may be, if it does not fit the rest of your pins, then you will not be able to connect it.


The wattage ratings that are advertised on most power supplies is the peak power that a supply can provide. What you are actually looking for is the consistency of the power supply, not the peak power. For the best way to determine your consistent power supply, you should definitely invest in a power supply wattage calculator. You will only have to make this investment one time, and it can be used for virtually every power supply that you have to purchase in the future.

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