In the world of gaming, power supply is a crucial factor. The quality and performance of your power supply can have a dramatic impact on how well your PC runs. If you want to know what type of power supply you have, here are two easy ways to tell.

The how to find out what power supply you have without opening computer is a question that many people ask. There are two easy ways to know what power supply you have.

The majority of PC users are curious about their GPU, CPU, or motherboard. However, many individuals wish to know what kind of power supply they have.

Installing a new graphics card or updating the system usually necessitates this knowledge. As a result, a user must be aware of the many methods for identifying their power supply unit.


There are two potential methods for determining this. Unfortunately, unlike the CPU, GPU, or Motherboard detection tools, there is no program that can tell you what power supply you have.

So, how did you figure it out?

Before you go any further, consider the following scenarios:-

1. You have a computer that has been built from various components from several vendors.

2. You have a computer that was pre-built by a single manufacturer.

In general, determining the power supply in the first situation is simple, but finding your PSU model if you have a pre-built PC is not difficult. In any case, there are a number of methods to find out about your power supply.

The First Approach

Manually opening the chassis side panel is a universal way of testing the power supply in both instances. If you have a completed computer, it’s simple to figure out what your PC’s power supply is, but there are some power supplies that don’t specify their power capacity in large letters, as we see on a lot of premium grade power supplies today, making it difficult to estimate how big it is.

The specifications, on the other hand, will always be stated on at least one side, which may or may not be visible to you depending on which way your power supply is placed.

The Second Approach

The second approach, on the other hand, is more convenient, particularly when dealing with a single-manufacturer computer. You may find out about the specifications of your PSU by going to that manufacturer’s official website and searching for your PC model. Some big manufacturers, such as Dell, utilize unique PSUs that they don’t mention on their website, therefore you won’t be able to find it out even on their website.


The wattage capacity of your power supply is the most essential thing to know. Whether you want to know if you can run a certain graphics card, you’ll need to know how much upgrade space you have.

Do you want to know what software to put on a new computer? Check out these 15 must-have programs right now!

Custom and Standard power supplies are the two types of power supply available. Standard power supplies are those designed especially for use in gaming PCs by manufacturers such as Cooler Master, Corsair, EVGA, Antec, and Thermaltake. These power supplies are large and include high-quality cables with sleeves.

Cooler Master MWE 450-Watt

The majority of these PSUs feature a black appearance and numerous cables, including PCI-E cables for graphics cards. Custom power supplies, on the other hand, are smaller and lighter, with cases constructed of gleaming aluminum similar to those seen in Dell or HP prebuilt PCs.

Unlike branded power supplies, their fans are located on the back side rather than the top or bottom. This is due to the fact that they are made of less expensive materials and do not need as much cooling as branded PSUs.

Manufacturers such as Zebronics and Intex also produce similar power supply, which range in price from $5 to $10. These power supplies contain fewer wires and, in most cases, are not sleeved. PCI-E power cords for graphics cards are hard to come by in these.

zebronics power supply

So, if you ever want to know whether or not you can update your PC, look for these items in your power supply, which will tell you the basics. As I previously said, there is no other way to determine what power supply you have without opening the case, but understanding how they appear can undoubtedly assist you in making key PC choices.

– How do you know what motherboard you have?

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Other helpful resources include:

  1. Guide to Connecting Motherboard Cables
  2. What is the best way to figure out what graphics card you have?


The how to check psu health is a guide that will help you know what power supply you have.

Related Tags

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  • how to check power supply voltage on pc
  • wattage on power supply
  • psu specs

Holly is the smartest person you will ever know (Or so she tells us lol). She's a gamer by heart, and an author by soul. Writing for the website g15tools is a dream come true for her - she loves being able to share her thoughts and insights with others who love gaming as much as she does. When she's not writing or gaming, Holly can be found spending time with her friends and family.