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53 Items found
Seasonic G12 GM-650 80 Plus Gold Semi-Modular Power Supply
CA-08J-SS
The G12 GM Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system.
£79.99 (incl. VAT)
fiber_manual_record In stock
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)
fiber_manual_record In stock
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)
fiber_manual_record In stock
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)
fiber_manual_record In stock
Save 10%
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 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)
fiber_manual_record In stock
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)
fiber_manual_record In stock
Seasonic Prime PX-1600 1600W 80 Plus Platinum Modular Power Supply
CA-083-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.
£359.99 (incl. VAT)
fiber_manual_record In stock
Seasonic B12 BC-550 550W 80+ Bronze Power supply
CA-07S-SS
80 PLUS® Bronze certified, Fixed cables, Tight Voltage Regulation, S2FC - Smart and Silent Fan Control, 5 years warranty
£54.95 (incl. VAT)
fiber_manual_record In stock
Seasonic Prime GX-1300 1300W 80 Plus Gold Power Supply
CA-080-SS
star star star star star
(1)
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.
£259.99 (incl. VAT)
fiber_manual_record In stock
Seasonic G12 GM-850 80 Plus Gold Semi-Modular Power Supply
CA-08G-SS
The G12 GM Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system.
£99.95 (incl. VAT)
fiber_manual_record In stock
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)
fiber_manual_record In stock
Seasonic Focus PX-750 750W 80+ Platinum Modular Power Supply
CA-06Q-SS
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(1)
Powerful 750 Watt power supply, High-efficiency thanks to 80 PLUS Platinum certification, Powerful 70A single rail, Modular cable management with flat cables, 10 Year manufacturer's guarantee
£169.99 (incl. VAT)
fiber_manual_record In stock
Seasonic B12 BC-650 650W 80+ Bronze Power supply
CA-07R-SS
80 PLUS® Bronze certified, Fixed cables, Tight Voltage Regulation, S2FC - Smart and Silent Fan Control, 5 years warranty
£59.99 (incl. VAT)
fiber_manual_record In stock
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 In stock
Seasonic G12 GM-750 80 Plus Gold Semi-Modular Power Supply
CA-08H-SS
The G12 GM Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system.
£89.99 (incl. VAT)
fiber_manual_record In stock
Seasonic G12 GM-550 80 Plus Gold Semi-Modular Power Supply
CA-08K-SS
The G12 GM Series is available in the standard ATX Form Factor and in wattages that are most common for a PC system.
£69.95 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus GX-550 550W 80+ Gold Modular Power Supply
CA-06W-SS
Powerful 550 Watt PSU, High efficiency thanks to 80 PLUS Gold certification, Powerful 45A single rail, Modular cable management with flat cables, 10 Year manufacturer's guarantee
£99.95 (incl. VAT)
fiber_manual_record In stock
Seasonic Prime PX-1300 1300W 80 Plus Platinum Modular Power Supply
CA-07Z-SS
80 PLUS® Platinum certified, Micro Tolerance Load Regulation (0.5 %), Cable-free Connection Design, Premium Hybrid Fan Control - Fanless until 40 % load, Multi-GPU setup, Gold plated connectors
£280.00 (incl. VAT)
fiber_manual_record In stock
£14.99 (incl. VAT)
fiber_manual_record In stock
Seasonic G12-GC-650 650W 80+ Gold Power Supply
CA-07M-SS
High Efficiency, 80 PLUS® Gold Certified compact ATX Power supply with 5 years warranty
£69.95 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus GX-850 ATX3.0 850W 80 Gold Modular Power Supply
CA-08M-SS
ATX 12 V ATX 3.0 and PCIe 5.0 Full Modular 80 PLUS Gold Certified 10 Years Warranty Dimensions: 140 mm (L) x 150 mm (W) x 86 mm (H)
£139.99 (incl. VAT)
fiber_manual_record In stock
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)
fiber_manual_record In stock
Seasonic VERTEX GX-1200 1200W 80+ Gold Modular Power Supply
CA-087-SS
star_border star_half star star star
(3)
VERTEX Series units will provide true power in both Platinum and Gold levels of efficiency
£239.99 (incl. VAT)
fiber_manual_record In stock
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
£179.99 (incl. VAT)
fiber_manual_record In stock
Seasonic Focus GX-1000 ATX 3.0 1000W 80 Gold Modular Power Supply
CA-08L-SS
star star star star star
(1)
ATX 12 V ATX 3.0 and PCIe 5.0 Full Modular 80 PLUS Gold Certified 10 Years Warranty Dimensions: 140 mm (L) x 150 mm (W) x 86 mm (H)
£179.99 (incl. VAT)
fiber_manual_record In stock
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)
fiber_manual_record In stock
Save 14%
Seasonic Focus GX-850 850W 80+ Gold Modular Power Supply
CA-06T-SS
Powerful 850 Watt power supply, High-efficiency thanks to 80 PLUS Gold certification, Powerful 70A single rail, Modular cable management with flat cables, 10 Year manufacturer's guarantee
£139.99 £119.99 (incl. VAT)
fiber_manual_record In stock
Seasonic Prime PX-850 850W 80 Plus Platinum Modular Power Supply
CA-079-SS
star star star star star
(1)
Powerful 850 Watt power supply, 80 PLUS Platinum for maximum efficiency, Powerful single rail rated for 70A, modular cable management with flat cables, 12 year manufacturer's warranty
£249.95 (incl. VAT)
fiber_manual_record In stock
Seasonic G12-GC-850 850W 80+ Gold Power supply
CA-07K-SS
High Efficiency, 80 PLUS® Gold Certified compact ATX Power supply with 5 years warranty
£89.99 (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 ATX3.0 750W 80 Gold Modular Power Supply
CA-08N-SS
ATX 12 V ATX 3.0 and PCIe 5.0 Full Modular 80 PLUS Gold Certified 10 Years Warranty Dimensions: 140 mm (L) x 150 mm (W) x 86 mm (H)
£119.99 (incl. VAT)
fiber_manual_record In stock
Seasonic VERTEX GX-1000 1000W 80+ Gold Modular Power Supply
CA-088-SS
VERTEX Series units will provide true power in both Platinum and Gold levels of efficiency
£199.99 (incl. VAT)
fiber_manual_record In stock
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)
fiber_manual_record Pre order
Seasonic B12 BC-750 750W 80+ Bronze Power supply
CA-07Q-SS
80 PLUS® Bronze certified, Fixed cables, Tight Voltage Regulation, S2FC - Smart and Silent Fan Control, 5 years warranty
£69.95 (incl. VAT)
fiber_manual_record Pre order
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 Pre order
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)
fiber_manual_record Pre order
Seasonic G12-GC-750 750W 80+ Gold Power supply
CA-07L-SS
star star star star star
(1)
High Efficiency, 80 PLUS® Gold Certified compact ATX Power supply with 5 years warranty
£79.99 (incl. VAT)
fiber_manual_record Pre order
Seasonic Focus GX-1000 1000W 80+ Gold Modular Power Supply
CA-07X-SS
star star star star star
(1)
1000W Seasonic FOCUS GX, Full Modular, 80 PLUS Gold, Single Rail, 83A, 120mm Fan, ATX PSU
£160.00 (incl. VAT)
fiber_manual_record Out of stock
See Details
Seasonic G12-GC-550 550W 80 Gold Power supply
CA-07N-SS
High Efficiency, 80 PLUS® Gold Certified compact ATX Power supply with 5 years warranty
£59.99 (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.


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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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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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.

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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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