All of you are more or less aware of the fact that PSU or SMPS is the most vital part of your computers and also you must be aware with the basic functioning of a power supply unit.
Below we'll take all the basic points one by one and in the end give you a clear picture of how you can get and choose the best power supply unit.
The Maximum PowerWhen you buy a PSU first of all determine the total amount of power that it will need to supply to all your components, this will help you get an understanding of what exactly are you looking for. Use this calculator to know the amount of power you actually need.
The Concept of RailWhenever you choose a power supply unit just look at the label first where all the values of current is listed on various voltage rail. The first thing that you need to make sure is that you are getting more than atleast 20A on the 12V rail. This is the lifeline of your computer and needs the maximum amperes enlisted on it possible, the higher current on the 12V rail the better.
The Number of Connectors
Noise & EfficiencyThe noise produced by a PSU is a key feature as either it can run very quiet giving you a productive session on he PC or turn your computer into a jet engine! The noise produced by a power supply unit is directly proportional to the heat produced by the unit as the fan rotates more to keep the temperature down.
Efficiency and its advantages I've already explained in detail in my previous article, so simply buy a unit that is 80 Plus certified. Even a 80 Plus standard PSU with low wattage is more efficient than a higher wattage non certified local manufacturer's PSU.
Size Matters!So you’ve just bought that lovely 950W, 80-plus gold certified power supply. It’s heavy and solid feeling, and has all the connectors you ever would want. So you go to install it in your PC chassis, only to find out that you can’t have your hard drives and the power supply installed at the same time. Oops! PSUs actually come in different physical sizes. The size doesn’t matter much if you pop it into a gigantic, full tower case. But a number of mid-tower cases have constrained PSU spaces that are opposite the optical or hard drive bays. Buy a PSU that’s just a little too long, and you’ll find yourself unable to attach SATA drive connectors.
Which is better Modular or Non Modular?A modular PSU is basically just another power supply unit with detachable cables. You can plug in the required cables to the components and back to the PSU and leave the unused cables unattached to the unit giving you a cleaner and tidier rig which would otherwise result in a bunch of loosely hanging wires that you might just fold and spiral into a corner not only making it look ugly inside but may also cause heating issues at worst.
So its always recommended to buy a modular PSU if you are not going to use up all the connectors available on the power supply unit. The downside is that its expensive than its non-modular counterparts, so buy them only if you are left with spare money. Don't waste your money on a modular PSU by compromising on other important features.
Above I've given you all more than you can use to buy an ideal PSU for your PC, though its just the water's surface that we've touched. Follow these steps and you can never go wrong in your purchase of a power supply unit ever....if you do then maybe you didn't read my article properly.
So as I always say do leave a comment and if you have a query feel free to ask.