How To Check Power Supply Wattage Without Opening – [Guide]

How To Check Power Supply Wattage Without Opening

Whenever it comes to building a computer, most of the conversations revolve around the CPU and the GPU. The power supply unit is barely spoken of. Whereas the power supply is a very important part of any computer build.

It is that component that ensures your computer is up and running. A defect in your power supply unit (PSU) can cause the entire failure of your computer. It can also cause damage to other parts. So, it is an important part of your computer build.

Sometimes, issues can arise and you might want to know what your power supply rating is. You might want to replace your power supply unit and need such information. A lot of people feel that to get that bit of information, you must open your computer. You don’t have to do that as we are here to help you out.

There is a way to find out without opening your computer. So, follow us through as we share with you insights in that light.

First off, what exactly is the function of a power supply unit?

Well, you must have guessed that they supply power to other components of your computer. That is true but they do more than that. The power supply unit is also responsible for converting alternating current into direct current. It also ensures that the DC output voltage is well regulated to amounts that your computer can tolerate.

The PSU ensures that your computer is functioning properly. It also makes sure it is doing so in the healthiest way possible. This is why it is a very important part of any computer build. A defect in the PSU will not regulate the voltages properly. This can cause a reduction in your computer’s performance. It can even damage major components like your motherboard. So, you must always make sure you observe your PSU regularly.

How can I find my power supply wattage without opening my computer?

This information is always inside your computer case. There is no straight cut pattern to know your power supply wattage without opening your computer. Opening your computer case to check out this bit of information can be quite complicated. You have to start by extracting the power supply and that means you have to remove it from its base. You might even have to disconnect the branch connectors.

Well, that seems too complicated and way too technical, right? The good news is there are several ways that you can find out the power supply wattage of your computer. You don’t even have to go through all these processes. You don’t have to dig into your panels. These methods have their disclaimers as they might apply to specific computers. However, they are worth the shot as they can save you the unnecessary stress of dismantling your computer.

Related: How Much Should I Spend on a Motherboard

So, let’s dive straight into the methods.

1. Using your PSU Label

This is a very reliable method of finding out your computer wattage. The location of the PSU label may differ depending on the brand and model of your computer. The first place to check for this will be at the back of your computer’s case. It is usually where the power cord meets the case of your computer.

Usually, PSU manufacturers place vents in those locations. So, you might be lucky enough to find it. You can also try checking on the side of your PSU that is directly opposite the cover of your computer. If your computer’s case is glassy or transparent, you should desist from touching it.

If you locate the label of your PSU on the side or back of your computer’s case, then take a photo of it. This photo should be of high quality as it should allow zooming in to be able to read the information. If you still have not been able to locate the PSU, then there is one extra thing to do.

Open the cover of your computer. You should be able to locate the label either through the latch or unscrew the bolts on the side of the panel. Take a picture of this label.

You should find all the information you are looking for on this label. The watts capacity, voltage, and amp details are clearly stated on the label. If you cannot interpret the information, you can make use of the UR serial number. The number can be used to look up information about your PSU on the Underwriters Laboratories database.

2. Find out from your PSU manufacturer

If your PC’s manufacturer is a big manufacturer like Dell, Lenovo, or Asus, then this process is quite simple. All you have to do is go over to their website. Then, locate your computer’s model on the product database.

If you cannot locate details about the PSU, then you can just send a mail to their support team. They will give you access to all the details you need.

3. Find out from your computer’s builder

If you hired a PC builder to help you build your computer, then this is also another easy process. You can just simply call them and find out the PSU they placed on your computer. You can also check your receipt. It should contain this piece of information.

4. Check Your Receipts

The receipts you were given in the purchase of your components should have your PSU rating. You might have made your purchase online or physically. Either way, the receipts should still convey this information. Then, all you need to do is to run a google search, and then you should locate it.

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Your power supply unit is responsible for converting AC to DC output. Their rating in watts determines how much power is supplied to your computer. It is quite important therefore to know the rating of your PSU.

The most conventional way many people use is to dismantle their computers. However, we have been able to show you that you don’t have to go through that path. It can be quite complicated and without technical know-how, you could ruin some things.

We have been able to show you some easy techniques you can use to access this bit of information. So, make judicious use of the information we have provided.

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