How To Find Out Power Supply On Pc?

When it comes to building a custom PC or upgrading an existing one, determining the power supply unit (PSU) requirement is crucial. The power supply is responsible for providing electrical power to all the components of a computer, and selecting the right one is necessary for the stability and performance of your system. Finding out the power supply of your PC is a straightforward process, and in this article, we will guide you through the steps to help you make an informed decision.

Firstly, it’s essential to understand that PSUs are rated in watts, which is the total amount of power they can deliver to your system. The power requirement of a computer depends on several factors, such as the number and type of components, including the CPU, GPU, RAM, and storage drives. Additionally, your computer’s usage also affects the power supply requirement, so whether you use it for gaming, graphic design, or basic office tasks, you’ll need to consider the power usage. With the right information on hand, determining the power supply requirement of your PC can be a simple yet necessary process that ensures your system runs smoothly and efficiently.

How to Find Out Power Supply on PC?

To find out the power supply on a PC, follow these steps:

1. Look at the PSU Label: Check the power supply unit (PSU) label for the wattage, amperage, and voltage ratings. It is often located on the external casing of the power supply unit.

2. Use software tools: Some software tools such as CPUID and HWMonitor can provide information about the power supply wattage, voltage, and amperage.

3. Look at the motherboard manual: The motherboard manual often lists the recommended PSU wattage for specific processors and video cards.

4. Check the BIOS settings: Some BIOS settings can provide information about the power supply, such as voltage and temperature.

5. Use a power meter: A power meter can connect to the power supply and measure the actual power consumption.

6. Check the PC manufacturer’s specifications: If the PC is a branded model, the manufacturer’s website or the PC documentation can provide information about the power supply.

7. Open the PC case: If all else fails, you can open the PC case and look directly at the power supply label or use a multimeter to measure voltage and amperage. However, be cautious when opening your computer’s case, as this can void the warranty and cause damage if not done correctly.


1. How do I identify the power supply unit on my PC?
Answer: You can identify the power supply unit on your PC by looking for a label on the unit itself or by checking the specifications of your PC’s motherboard.

2. What are the different types of power supply units available for PCs?
Answer: The different types of power supply units available for PCs include ATX power supplies, SFX power supplies, and TFX power supplies.

3. What factors should I consider when choosing a power supply unit for my PC?
Answer: You should consider factors such as wattage, efficiency rating, modularity, and size when choosing a power supply unit for your PC.

4. How can I tell if my PC’s power supply unit is failing?
Answer: Some common signs that your PC’s power supply unit is failing include frequent crashes or system instability, random shutdowns, or strange noises coming from the unit itself.

5. Can I replace my PC’s power supply unit myself?
Answer: Yes, you can replace your PC’s power supply unit yourself, but it is important to follow proper safety precautions and to ensure that the new unit is compatible with your system. Consult a professional or refer to manufacturer instructions if uncertain.


In a nutshell, locating the power supply on your PC is not a complicated process as long as you know where to look and which components to identify. Remember to consider the wattage, voltage, and amperage rating as well as the type of connector before making any purchase. By knowing your PC’s power supply, you can ensure a smooth and stable performance, especially when upgrading your system. With these helpful tips, you can tackle this task with ease and efficiency. Happy computer troubleshooting!

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