How To Find Out My Power Supply?

As a computer user, it is essential to know your computer’s power supply unit (PSU) wattage to ensure that the components have enough power to operate correctly. The PSU wattage is significant as it determines the power that goes to each component. If you don’t have enough power, you can experience issues such as random crashes and even damage your hardware. Therefore, finding out your computer’s power supply is crucial for maintaining the stability and functionality of your system.

To find out your power supply wattage, you can either check the label on your PSU or use software utilities that display the information. Examining the PSU label and manufacturer’s sticker on the unit will show the rated wattage, universal product code (UPC), and any safety approvals. Software programs like HWMonitor, HWiNFO, and CPU-Z can also provide that information. Knowing your PSU information helps you to upgrade or replace it, so you ensure you get one with the correct wattage to support your current computer components. Ultimately, familiarizing yourself with your computer’s PSU wattage is an essential aspect of PC maintenance.

How to Find Out My Power Supply?

To find out the power supply of your computer, you can follow the below steps:

1. Open the computer case: To know the power supply of your computer, you must turn it off and open the case.

2. Look for the label on the power supply: The label usually contains the maker, model number, serial number, and power specifications.

3. Check the capacity of the power supply: The capacity of the power supply is measured in watts. Check if it meets or surpasses the minimum requirement of the components of your computer, such as the motherboard, graphics card, and processor.

4. Use a power supply calculator: You can also use an online power supply calculator tool to identify the wattage you need based on the components of your computer.

5. Look at the power connectors: The power connectors on the power supply are the cables that run from it to your computer’s components. If your computer uses proprietary connectors, note their shape and size; otherwise, look for which type of connectors are used.

By following these steps, you will be able to identify the power supply of your computer.


1. Question: How can I determine the wattage of my power supply?
Answer: The wattage of your power supply can be found on the label attached to it. Look for the term “Wattage” or “W” and the number beside it.

2. Question: Is it possible to find out the model number of my power supply?
Answer: Yes, the model number of your power supply can be found on the product label. Look for the term “Model No.” and the alphanumeric code beside it.

3. Question: Can I use software to determine my power supply’s specifications?
Answer: Yes, there are various system information tools and software that can provide details about your power supply, including its make, model, wattage, and voltage.

4. Question: Is it safe to open my computer case to find out my power supply information?
Answer: It is safe to open your computer case as long as you take necessary precautions, such as turning off the power supply and wearing an anti-static wrist strap. However, it is recommended to consult with a professional if you are not comfortable with handling computer hardware.

5. Question: Does the brand of my power supply matter?
Answer: The brand of your power supply can affect its quality and reliability. It is recommended to choose a reputable brand known for producing high-quality power supplies for optimal performance and safety.


Finding out your power supply can be a daunting task, but with the help of the methods discussed earlier, such as checking your computer’s manual or using software programs to gather information, it can be easily achieved. It’s important to know the wattage of your power supply to ensure that you have enough power to run your components and avoid any potential damage to your system. By taking the necessary steps to determine your power supply, you can rest assured that your computer is running smoothly and efficiently.

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