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Replacing an old Computer Power Supply with a new one is an excellent solution to a number of problems that a computer might face. It is important to ensure that you are having the right wattage power supply. In fact, having a higher wattage power supply does not hurt.

Lenovo H3060 10-pin power supply PA-2221-3 FRU: 54Y8941

Maybe you are considering upgrading your current case which has a 300W power supply unit to some better-looking case, and the better-looking case you are considering has a 520W power supply unit. You must be asking yourself whether doing so is safe. You must also be wondering how the difference will influence the operation of your computer.

Well, it is pretty all right to install a Desktop Power Supply or a laptop power supply with a higher wattage. And if everything else was working quite all right before, you are most likely to notice no any difference. This is also true with HP Power Supply and Lenovo Power Supply.

What does “W” means?

The “W” basically stands for watts. It is a measure of the electric power. It is the unit used to indicate the amount of electric power that a power supply can provide. Power supplies are typically rated by the highest amount of power that they can deliver. This means that a Dell Power Supply rated for 520W will supply more amount of electric power as compared to a PSU that is rated 300W. That is definitely more electric power.

Even though that is more electric power, it will not give your computer more powers. Besides, it will not necessarily make your computer to run faster. Your computer will still use only the amount of electric power required to run its components effectively. This also applies to

How much power do you need?

In case you have a computer that has been running quite well on a 300W computer power supply, then it does not necessarily need a bigger PSU. However, there is completely nothing wrong with using a bigger power supply. There is a possibility that a larger, new power supply could be a little quieter and a bit more efficient.

But even if you start using a larger power supply, your computer will still continue to use just the amount of electric power it was using earlier, which in this case is less than 300W. Actually, the fact that your larger new power supply can provide more electric power is completely beside the point here.