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35 Items found
Seasonic G12-GC-850 850W 80 Gold Power Supply
POW-SSC-03157
Seasonic's G12 GC power supplies offer reliable 80 PLUS Gold efficiency, non-modular design, and high performance, ideal for budget-conscious builds without compromising quality.
£85.99 (incl. VAT)
fiber_manual_record In stock
£14.99 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus SGX 650W 80 Plus Gold Modular SFX Power Supply
CA-06N-SS
The long-awaited new line of Seasonic's FOCUS SGX is versatile in its application and powerful with a small footprint.
£124.99 (incl. VAT)
fiber_manual_record In stock
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Seasonic Prime TX-700 700W 80 Plus Titanium Modular Fanless Power Supply
CA-07J-SS
Powerful 700 Wat Fanles power supply, 80 PLUS Titanium for maximum efficiency, modular cable management with flat cables, 12 year manufacturer's warranty
£259.99 £234.95 (incl. VAT)
fiber_manual_record In stock
Seasonic G12-GC-750 750W 80 Gold Power Supply
POW-SSC-03156
Seasonic's G12 GC power supplies offer reliable 80 PLUS Gold efficiency, non-modular design, and high performance, ideal for budget-conscious builds without compromising quality.
£75.95 (incl. VAT)
fiber_manual_record In stock
Seasonic B12 BC-850 850W 80+ Bronze Power supply
CA-07P-SS
80 PLUS® Bronze certified, Fixed cables, Tight Voltage Regulation, S2FC - Smart and Silent Fan Control, 5 years warranty
£85.00 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus GX-750 ATX 3.1 750W 80 Gold Modular Power Supply
POW-SSC-03150
The Seasonic FOCUS GX ATX 3.1 is a fully modular, 80 PLUS Gold power supply offering advanced energy efficiency, quiet operation, and comprehensive protection features for high-performance builds.
£119.99 (incl. VAT)
fiber_manual_record In stock
Seasonic G12 GM-850 850W 80 Plus Gold Semi-Modular Power Supply
POW-SSC-03183
The G12 GM range features 80 PLUS Gold efficiency and semi-modular design, providing flexibility for cleaner cable management while delivering efficient and reliable power output.
£89.99 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus GX-850 ATX 3.1 850W 80 Gold Modular Power Supply
POW-SSC-03148
The Seasonic FOCUS GX ATX 3.1 is a fully modular, 80 PLUS Gold power supply offering advanced energy efficiency, quiet operation, and comprehensive protection features for high-performance builds.
£139.99 (incl. VAT)
fiber_manual_record In stock
Seasonic Prime TX-750 750W 80 Plus Titanium Modular Power Supply
CA-076-SS
Powerful 750 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 62 A, modular cable management with flat cables, 12 year manufacturer's warranty
£224.99 (incl. VAT)
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Seasonic Prime TX-1600 1600W 80 Plus Titanium Modular Power Supply
CA-081-SS
Pressing on with its One Seasonic Initiative, the PRIME TX, PRIME PX and PRIME GX series became the successors to the Seasonic PRIME and PRIME Ultra series.
£469.99 (incl. VAT)
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Seasonic VERTEX PX-850 ATX3.0 850W 80 Plus Platinum Modular Power Supply
CA-08R-SS
Seasonic VERTEX PX Series, redefines power supply excellence, ensuring peak performance, reliability, and advanced features for an elevated PC power solution.
£199.99 (incl. VAT)
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Seasonic VERTEX PX-750 ATX3.0 750W 80 Plus Platinum Modular Power Supply
CA-08V-SS
Seasonic VERTEX PX Series, redefines power supply excellence, ensuring peak performance, reliability, and advanced features for an elevated PC power solution.
£169.99 (incl. VAT)
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Seasonic Prime PX 3.0 1600W ATX 3.0 80 Plus Platinum Power Supply
CA-08W-SS
Seasonic’s latest PRIME ATX 3.0 Series is designed and built to power new PC components requiring the new ATX 3.0 and PCIe 5.0 standards.
£379.99 (incl. VAT)
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Seasonic G12-GC-650 650W 80 Gold Power Supply
POW-SSC-03155
Seasonic's G12 GC power supplies offer reliable 80 PLUS Gold efficiency, non-modular design, and high performance, ideal for budget-conscious builds without compromising quality.
£65.99 (incl. VAT)
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Seasonic VERTEX GX-850 850W 80+ Gold Modular Power Supply
CA-089-SS
VERTEX Series units will provide true power in both Platinum and Gold levels of efficiency
£169.99 (incl. VAT)
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Seasonic VERTEX PX-1000 ATX3.0 1000W 80 Plus Platinum Modular Power Supply
CA-08Q-SS
Seasonic VERTEX PX Series, redefines power supply excellence, ensuring peak performance, reliability, and advanced features for an elevated PC power solution.
£229.99 (incl. VAT)
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Seasonic Focus GX-1000 ATX 3.1 1000W 80 Gold Modular Power Supply
POW-SSC-03149
The Seasonic FOCUS GX ATX 3.1 is a fully modular, 80 PLUS Gold power supply offering advanced energy efficiency, quiet operation, and comprehensive protection features for high-performance builds.
£169.99 (incl. VAT)
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Seasonic Focus GX-1000 ATX 3.1 1000W 80 Gold Modular Power Supply - White
POW-SSC-03191
The Seasonic FOCUS GX White ATX 3.1 is a fully modular, 80 PLUS Gold certified power supply, delivering high energy efficiency, quiet operation, and advanced protection features.
£174.95 (incl. VAT)
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Seasonic Focus GX-850 ATX 3.1 850W 80 Gold Modular Power Supply - White
POW-SSC-03192
The Seasonic FOCUS GX White ATX 3.1 is a fully modular, 80 PLUS Gold certified power supply, delivering high energy efficiency, quiet operation, and advanced protection features.
£149.99 (incl. VAT)
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Seasonic Focus GX-750 ATX 3.1 750W 80 Gold Modular Power Supply - White
POW-SSC-03193
The Seasonic FOCUS GX White ATX 3.1 is a fully modular, 80 PLUS Gold certified power supply, delivering high energy efficiency, quiet operation, and advanced protection features.
£129.95 (incl. VAT)
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Seasonic PRIME PX 3.0 2200W ATX 3.0 80 Plus Platinum Power Supply
POW-SSC-03346
The Seasonic PRIME PX-2200. Designed for demanding applications such as artificial intelligence and other high-power workloads, this flagship unit from the PRIME series delivers top-tier performance built on high-quality components.
£499.99 (incl. VAT)
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Seasonic Prime TX-1000 1000W 80 Plus Titanium Modular Power Supply
CA-074-SS
Powerful 1,000 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 83 A, modular cable management with flat cables, 12 year manufacturer's warranty
£339.95 (incl. VAT)
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Seasonic Prime TX-850 850W 80 Plus Titanium Modular Power Supply
CA-075-SS
Powerful 850 Watt power supply, 80 PLUS Titanium for maximum efficiency, Powerful single rail rated for 70 A, modular cable management with flat cables, 12 year manufacturer's warranty
£264.95 (incl. VAT)
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Seasonic VERTEX GX-750 750W 80 Gold Modular Power Supply
POW-SSC-01270
Seasonic’s latest Vertex Series is designed and built to power new PC components requiring the new ATX 3.0 and PCIe 5.0 standards.
£129.95 (incl. VAT)
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Seasonic PRIME TX 3.0 1600W ATX 3.0 80 Plus Titanium Power Supply
CA-08Y-SS
Seasonic’s latest PRIME ATX 3.0 Series is designed and built to power new PC components requiring the new ATX 3.0 and PCIe 5.0 standards.
£479.99 (incl. VAT)
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Seasonic G12 GM-650 650W 80 Plus Gold Semi-Modular Power Supply
POW-SSC-03185
The G12 GM range features 80 PLUS Gold efficiency and semi-modular design, providing flexibility for cleaner cable management while delivering efficient and reliable power output.
£69.95 (incl. VAT)
fiber_manual_record Pre order
Seasonic PRIME TX 3.0 1300W ATX 3.0 80 Plus Titanium Power Supply
CA-08X-SS
Seasonic’s latest PRIME ATX 3.0 Series is designed and built to power new PC components requiring the new ATX 3.0 and PCIe 5.0 standards.
£409.99 (incl. VAT)
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Seasonic G12 GM-750 750W 80 Plus Gold Semi-Modular Power Supply
POW-SSC-03184
The G12 GM range features 80 PLUS Gold efficiency and semi-modular design, providing flexibility for cleaner cable management while delivering efficient and reliable power output.
£79.99 (incl. VAT)
fiber_manual_record Pre order
Seasonic Core GX-850-V2 ATX3.1 80 Plus Gold Power Supply
POW-SSC-03647
The Seasonic Core GX ATX 3.0 2024 power supply offers high efficiency, enhanced stability, and quiet operation, ideal for modern gaming rigs and powerful workstations.
£124.99 (incl. VAT)
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Seasonic Core GX-750-V2 ATX3.1 80 Plus Gold Power Supply
POW-SSC-03648
The Seasonic Core GX ATX 3.0 2024 power supply offers high efficiency, enhanced stability, and quiet operation, ideal for modern gaming rigs and powerful workstations.
£114.95 (incl. VAT)
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Seasonic Core GX-650-V2 ATX3.1 80 Plus Gold Power Supply
POW-SSC-03649
The Seasonic Core GX ATX 3.0 2024 power supply offers high efficiency, enhanced stability, and quiet operation, ideal for modern gaming rigs and powerful workstations.
£104.99 (incl. VAT)
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Seasonic VERTEX GX-1200 1200W 80+ Gold Modular Power Supply
CA-087-SS
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VERTEX Series units will provide true power in both Platinum and Gold levels of efficiency
£239.99 (incl. VAT)
fiber_manual_record Pre order
Seasonic VERTEX GX-1000 1000W 80+ Gold Modular Power Supply
CA-088-SS
star star star star star
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VERTEX Series units will provide true power in both Platinum and Gold levels of efficiency
£199.99 (incl. VAT)
fiber_manual_record Pre order
Seasonic VERTEX PX-1200 ATX3.0 1200W 80 Plus Platinum Modular Power Supply
CA-08P-SS
star_border star_border star_border star star
(1)
Seasonic VERTEX PX Series, redefines power supply excellence, ensuring peak performance, reliability, and advanced features for an elevated PC power solution.
£259.99 (incl. VAT)
fiber_manual_record Pre order

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.


EFFICIENCY

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.


MODULAR, SEMI-MODULAR, AND NON-MODULAR

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.




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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.

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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.

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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


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