What PSU Do I Have?

Not sure what power supply is powering your rig? Whether you’re planning upgrades or just curious, here’s how to find out without frying your nerves… Or your PC.

If you’ve ever stared at your PC and wondered, “What PSU do I even have?” you’re not alone! Whether you’re thinking about upgrading your graphics card, troubleshooting a power issue, or just indulging your inner detective, knowing your PSU (Power Supply Unit) is essential. The good news? You might not even have to open your case to find out. Let’s walk through the easiest methods first, then get hands-on if we need to.

Start With the Easy Wins

Before you reach for a screwdriver, try these quick steps. First, check your order history. Whether you bought a pre-built PC or assembled it yourself, your PSU might be listed on your retailer’s website or in your email receipts.

Still no luck? Take a look at the back of your PC where the power cable plugs in. Some PSUs have a visible label or branding right there, giving you a fast answer without opening anything up.

Time to Pop the Case

If your PSU isn’t listed online and there’s no label visible on the back, it’s time to get hands-on. Don’t worry! Opening your case isn’t as scary as it sounds. Here’s how to safely check your power supply from the inside:

Turn off and unplug your PC.
- Safety first! Shut it down fully and remove the power cable from the back. Next, make sure you press the power button a few times and wait a little while.

Move to a clean, static-free workspace.
- Ideally, work on a wooden surface, and avoid carpets to reduce static buildup.

Open the rear panel of your case.
- Most modern PC cases have thumb screws at the back, just loosen these and slide the panel off.

Locate the PSU.
- It’s usually at the bottom rear of the case. Look for the big box where all the cables lead to.

Check the label.
- The side of the PSU facing into the case should have a sticker or printed label with all the info, brand, wattage, efficiency rating (like 80 PLUS Gold), and model number.

Put everything back together.
- Once you’re done, reattach the panel, plug your PC back in, and you’re good to go!

Ready For an Upgrade?

Following these steps, you should’ve discovered details about your PSU, like its wattage and 80 PLUS rating. If they’re not going to quite cut it for your planned build, then it might be time for a cheeky upgrade? Overclockers UK has a huge selection of power supplies perfect for supporting any hardware configuration.

PSUs

Phanteks AMP GH 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply

POW-PHK-02519

£104.99 GBP

(incl. VAT)

FREE SHIPPING

in stock

ADD TO BASKET

Asus ROG Thor 1600W ATX 3.1 PCIe 5.0 80 Plus Titanium Modular Power Supply

POW-ASU-04707

£699.95 GBP

(incl. VAT)

FREE SHIPPING

Pre order

ADD TO BASKET

Lian Li RS 1200W RS Hub ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply

POW-LIA-06175

£119.99 GBP

(incl. VAT)

FREE SHIPPING

in stock

ADD TO BASKET

Learn More About Your PC

What Should We Cover Next?

Now you know exactly what PSU you’ve got powering your rig – whether it’s a budget-friendly unit or a beefy 1000W monster. Keep that info handy for future upgrades, or just to flex on your mates. Got another PC mystery you want solved? Let us know what we should tackle next!