Student Discount Help & Support Blog Forum

PC Power Supplies

view_comfy square view_list
3 Items found
Offer Save 14%
CoolerMaster MWE V2 1250w ATX3.0 PCI-e 5.0 80 Plus Gold Power Supply - Black
The new MWE Gold V2 series is the next step in the evolution of Cooler Master's entry level 80 Plus Gold Power Supply line
£219.95 £188.99 (incl. VAT)
fiber_manual_record In stock
£179.99 (incl. VAT)
fiber_manual_record In stock
CoolerMaster MWE V2 1050w ATX3.0 PCI-e 5.0 80 Plus Gold Power Supply - Black
The new MWE Gold V2 series is the next step in the evolution of Cooler Master's entry level 80 Plus Gold Power Supply line
£189.95 (incl. VAT)
fiber_manual_record Out of stock
See Details

PC Power Supplies

Asus ROG Loki SFX-L 850W Platinum Power Supply - White

Power supplies play a critical role in your gaming PC and should be a high priority when piecing together your new build. Overclockers UK has a huge selection of power supplies in different wattage ratings and form factors, with some models even sporting features such as RGB! When choosing your new PSU, we’d recommend using an online tool to calculate how much wattage you’ll need during peak load. Our range includes models from industry-leading PSU manufacturers, including Corsair, Kolink, Seasonic, be quiet!, and more, meaning you’re certain to find the perfect power supply for your gaming PC.


A power supply’s efficiency is a measure of how much energy is lost between your wall socket and the power delivered to your PC's components. You’ll often see PSU efficiency listed as an 80 PLUS rating. This certification simply means a given power supply is at least 80% efficient at 50% load.

Rated Load10%20%50%100%
80 PLUS / 82% 85% 82%
80 PLUS Bronze / 85% 88% 85%
80 PLUS Silver / 87% 90% 87%
80 PLUS Gold / 90% 92% 89%
80 PLUS Platinum / 92% 94% 90%
80 PLUS Titanium 90% 94% 96% 94%


Power Supply FORM FACTORS Explained

Power supply form factor is what determines a PSU's size and shape. Different form factors, such as ATX, SFX, and TFX, are tailored to fit specific case designs. Choosing the correct form factor is essential for ensuring a power supply unit fits comfortably in your PC case, allowing for efficient cable management and proper airflow. Many PC chassis will be able to accept different power supply form factors. However, the most commonly used PSU size is ATX. If you’re unsure which PSU you need for your specific PC case, you can check the specifications online or in the manual.


When it comes to choosing a PSU for your gaming PC, you have three choices. Non-modular, semi-modular, and modular. For budget gaming PCs and beginners, a non-modular power supply can be a great choice, thanks to their lower price point and pre-attached cables. Semi-modular power supplies have core cables permanently attached but also feature some detachable cables. Finally, a modular PSU features all the necessary connectors without power cables fixed in place, giving you the freedom to only use those that you need.

Want to Read More?

Your PSU is one of the most important parts of your gaming PC. In this extensive guide on the Overclockers UK Blog, we’ve covered everything you need to know about power supply efficiency.

Read More

PC Power Supplies FAQ

What wattage power supply do I need?

When choosing a PSU for your gaming PC, you’ll need to ensure it provides enough wattage for all of your components during their peak load. We suggest using an online tool to calculate how much wattage the components in your PC will need.

What do efficiency and 80 PLUS ratings mean?

Efficiency and 80 PLUS ratings indicate how effectively a PSU converts AC power from your outlet into DC power for your components. The 80 PLUS standard certifies PSUs based on their efficiency levels, with ratings like Bronze, Silver, Gold, and Platinum, representing increasingly better performance and energy savings.

What are PSU form factors?

Power supply form factors determine their size and compatibility with different case designs. Common form factors include ATX, SFX, and TFX, each tailored to fit specific cases. Choosing the right form factor ensures your PSU fits comfortably in your case, promoting efficient cable management and proper airflow.

The Overclockers Difference

innovative products, services and customer service

Innovative Products and Exclusive Brands

Overclockers UK not only offers next day delivery on thousands of products but also stocks exclusive brands from cutting-edge manufacturers including AMD, Intel, Asus, Gigabyte, Team Group and an ever-growing range of ultimate performance overclocked elite-tier hardware approved by 8 Pack.

customer service

Industry Leading Customer Support

Whether you are after advice, product information or even aftersales support we are here for you. Overclockers UK offers unparalleled customer service which is available across multiple platforms including telephone, social media, email, webnotes, live chat, and even a dedicated section on Overclockers forum. We even offer a 3 year warranty on our own PC's.

5 star Trustpilot

5 Star Service

Overclockers UK are rated one of the top PC, hardware and peripheral retailers in the country. From premium products to a personal shopping experience. You can trust us to deliver an unbeatable 5-star service

Subscribe and Save


Subscribe to the Newsletter

Sign up to our weekly newsletter and get the latest news, offers, and deals directly to your inbox. Don't worry you can unsubscribe at anytime.

Sign Up Now


star star star star star_half

Google customer reviews

Our customers know our services and this is reflected in the rating they give us. Leave us your opinion and help us to improve it.

What our customers say about us

22 years trust badge