800w - 850w PSUs
View:
view_comfy
square view_list
58 Items found
Asus ROG Loki SFX-L 850W ATX 3.1 PCIe 5.0 80 Plus Platinum Modular Power Supply
CA-05X-AS
(3)
ASUS ROG Loki SFX-L 850W Platinum. Total power: 850 W, AC input voltage: 100 - 240 V, Combined power (+3.3V): 110 W. Motherboard power connector: 24-pin ATX, Cabling type: Fully-Modular. Purpose: PC, Power supply unit (PSU) form factor: SFX, 80 PLUS certification: 80 PLUS Platinum. Product colour: Black, Silver, Fan diameter: 12 cm, Number of fans: 1 fan(s). Compliance certificates: RoHS, Certification: OPP/OVP/UVP/SCP/OCP/OTP
£199.99
(incl. VAT)
Asus ROG Loki SFX-L 850W ATX 3.1 PCIe 5.0 80 Plus Platinum Modular Power Supply - White
CA-06F-AS
(4)
ROG Loki 850W Platinum White Edition, The Quietest SFX-L PSU.
£209.99
(incl. VAT)
Seasonic Core BC-850 850W ATX 3.1 PCIe 5.1 80 Plus Bronze Power Supply
POW-SSC-07506
The Seasonic CORE BC Series delivers reliable performance and modern ATX 3.1 compliance at an essential value. Designed for everyday builders and gamers, it embodies Seasonic’s trusted quality in a compact 140 mm design with a durable scratch-resistant finish.
£79.99
(incl. VAT)
Asus Prime 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-ASU-07631
With 80 PLUS and Cybenetics Gold certification, Dual-ball fan bearings, and an 8-year warranty, the ASUS Prime series PSU brings efficient and durable power delivery to high-performance workstations, all-round PCs, and gaming rigs.
£114.95
(incl. VAT)
Corsair SF Series SF850 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular SFX Power Supply
POW-CRS-02469
Outfit your next SFF PC with the CORSAIR SF Series 80 PLUS Platinum SFX Power Supply for compact, ATX 3.1 compliant, fully modular Platinum power.
£174.95
(incl. VAT)
Asus Prime 850W ATX 3.0 PCIe 5.0 80 Plus Gold Modular Power Supply
POW-ASU-04715
ASUS Prime 850W Gold PSU brings efficient and durable power delivery to all-round PCs, and gaming rigs
£114.95
(incl. VAT)
FSP Dagger PRO 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular SFX Power Supply
POW-FSP-06662
FSP Dagger PRO 850W SFX 80+ Gold ATX 3.1 PCIe 5.1 Modular Power Supply packs serious power in a compact frame — a fully-modular SFX unit delivering 850 W, 80 PLUS Gold efficiency, and native support for ATX 12 V v3.1 / PCIe 5.1 hardware.
£139.99
(incl. VAT)
Save 4%
be quiet! Pure Power 12 850W ATX 3.1 PCIe 5.1 80 Plus Titanium Power Supply
POW-BEQ-06576
Introducing the 14th generation, Dark Power is more than just an update. This powerhouse of a power supply stands for the very best we as PSU experts can offer. Among the many features are our internally developed Silent Wings fan, state-of-the-art technology and components of highest quality such as Japanese capacitors. In short: Dark Power is our high-end power supply series. Built for everyone who takes their systems seriously.
£179.95
£171.95
(incl. VAT)
Save 11%
Antec HCG 850 Pro 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-ATC-02745
HCG850 PRO Platinum ATX 3.1 FOR THE ULTIMATE GAMER
£159.95
£141.95
(incl. VAT)
Save 23%
Antec GSK 850 V2 850w ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-ATC-06483
Introducing the GSK V2 ATX3.1 power supply, designed with the ultimate performance and stability in mind for the gaming and enthusiast market. With advanced features like ATX 3.1, PCIe 5.1, unparalleled stability, and 80 PLUS® Gold-certified efficiencies, you can expect brilliant performance from your system.
£129.95
£100.00
(incl. VAT)
Save 12%
NZXT C850 850W 80+ Gold ATX 3.1 PCIE 5.1 Modular Power Supply - White
POW-NZX-06565
ATX 3.1-compliant & PCIe 5.1 power standard, 12V 2x6-pin connector, Zero RPM mode – fanless at low load, 80 Plus Gold efficiency, fully modular with sleeved cables
£124.99
£109.99
(incl. VAT)
Seasonic Core GX-850-V2 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply - White
POW-SSC-05299
Seasonic CORE GX White Series – ATX 3.1 & PCIe 5.1 ready, 80 PLUS Gold certified, fully modular with braided white cables, quiet HDB fan, 7-year warranty.
£134.90
(incl. VAT)
Asus ROG Strix 850W ATX 3.1 PCIe 5.0 80 Plus Platinum Modular Power Supply
POW-ASU-03790
(1)
ROG Strix 850W Platinum is a cool and quiet PSU with stable power delivery, engineered for efficiency with GaN MOSFET and intelligent stabilizer in striking style.
£159.95
(incl. VAT)
Save 14%
Seasonic Core GC 850W ATX 3.1 PCIe 5.1 80 Plus Gold Power Supply
POW-SSC-07503
The Seasonic CORE GC Series delivers reliable performance and modern ATX 3.1 compliance at an essential value. Designed for everyday builders and gamers, it embodies Seasonic’s trusted quality in a compact 140 mm design with a durable scratch-resistant finish.
£104.99
£89.95
(incl. VAT)
Gigabyte AORUS ELITE ICE P850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply - White
POW-GIG-06998
Rev 1.1 - ATX 3.1 and PCIe Gen 5.1 ready, 80 PLUS Platinum certified, 100% Japanese capacitors, 120mm smart Fluid Dynamic Bearing (FDB) fan, Compact design, Fully modular Cables
£118.99
(incl. VAT)
Antec NE850 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-ATC-08119
Introducing the NeoECO Platinum ATX3.1 power supply, crafted to deliver exceptional performance and rock-solid stability for gamers and enthusiasts. Featuring next-generation ATX 3.1 and PCIe 5.1 support, high-quality Japanese capacitors, and 80 PLUS® Platinum efficiency, it ensures outstanding and consistent power delivery.
£114.95
(incl. VAT)
Corsair RM850x 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-CRS-02466
(1)
850W, ATX form factor, Fully modular, ATX 3.1 compliant, PCIe 5.1 connectivity, 80 PLUS Gold certificate
£139.99
(incl. VAT)
Gigabyte UD850GM PG5 V2 ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
CA-03K-GI
Intel ATX 3.1 and PCIe Gen 5.1 ready, 100% Japanese capacitors, 120mm smart hydraulic bearing (HYB) fan, 80 PLUS Gold certified, Fully modular design
£94.99
(incl. VAT)
Save 4%
ASRock Steel Legend 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-ASR-04178
TOUGH AS STEEL
TRUE LEGEND
£119.99
£115.00
(incl. VAT)
Gigabyte AORUS ELITE P850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-GIG-06999
Rev 1.1 - ATX 3.1 and PCIe Gen 5.1 ready, 80 PLUS Platinum certified, 100% Japanese capacitors, 120mm smart Fluid Dynamic Bearing (FDB) fan, Compact design, Fully modular Cables
£113.99
(incl. VAT)
Asus TUF Gaming 850W ATX 3.1 PCIe 5.0 80 Plus Gold Modular Power Supply
CA-060-AS
(9)
The TUF Gaming 850W Gold is an efficient, resilient and dependable PSU that’s engineered for the long haul.
£129.95
(incl. VAT)
FSP VITA-850GD 850W ATX 3.1 PCIe 5.1 80 Plus Gold Power Supply
POW-FSP-07043
The FSP VITA GD 850W delivers a solid 850 W of continuous power with an 80 PLUS Gold certification for efficiency of ≥90 % at typical load, helping reduce wasted energy and heat. It’s built to the latest ATX 3.1 standard and PCIe Gen 5.1-ready, so it’s compatible with current and next-gen components.
£109.99
(incl. VAT)
Save 15%
Offer
MSI MAG A850GL 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply - White
POW-MSI-01938
The MSI MAG A850GL PCIE5 WHITE is a fully-modular ATX power supply delivering 850W of reliable power with 80 PLUS Gold efficiency and active PFC.
£129.95
£109.96
(incl. VAT)
Save 23%
Antec GSK 850 V2 850w ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply - White
POW-ATC-06484
Introducing the GSK V2 ATX3.1 power supply, designed with the ultimate performance and stability in mind for the gaming and enthusiast market. With advanced features like ATX 3.1, PCIe 5.1, unparalleled stability, and 80 PLUS® Gold-certified efficiencies, you can expect brilliant performance from your system.
£129.95
£99.95
(incl. VAT)
Lian Li SX Platinum 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-LIA-06697
850W PSU, Modular design, 80 PLUS Platinum, Compliant with the ATX 3.1 standard, 120mm FDB fan with Zero RPM mode, Flexible braided cables
£109.99
(incl. VAT)
Lian Li EDGE 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply - White
POW-LIA-06122
850W PSU, 80 PLUS Platinum Rating, Fully Modular, L-Shaped Form Factor, ATX12V Version 3.1, USB 2.0 Hub
£125.99
(incl. VAT)
Save 13%
Phanteks XT Pro Case & AMP GH 850W Gold - Builder Bundle
POW-PHK-07728
Upgrade your build with the ultimate foundation for performance and style with our Gaming Case & Power Supply Bundles. Hand selected for performance, this combo delivers the perfect balance of airflow, aesthetics, and reliable power.
£149.98
£129.95
(incl. VAT)
Save 2%
be quiet! Power Zone 2 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-BEQ-04388
Power Zone 2 850W is a power supply with 80 PLUS® Platinum certification and semi-passive zero-RPM cooling for both efficient and quiet gaming sessions.
£129.95
£127.00
(incl. VAT)
Lian Li SX Platinum 850W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply - White
POW-LIA-06698
850W PSU, Modular design, 80 PLUS Platinum, Compliant with the ATX 3.1 standard, 120mm FDB fan with Zero RPM mode, Flexible White braided cables to match your whole build
£109.99
(incl. VAT)
Save 22%
Aerocool Integrator Gold 850W 80 Plus Gold Modular Power Supply
CA-23T-AE
(2)
The most affordable 80Plus Gold power supply unit that delivers high efficiency and stable power output with minimum noise.
£89.99
£69.95
(incl. VAT)
Save 21%
Aerocool Integrator 850W 80 Plus Bronze Power Supply
POW-AER-01512
Aerocool Integrator 850W 80 Plus Bronze Power Supply
£69.95
£54.95
(incl. VAT)
Save 11%
Phanteks AMP GH 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply - White
POW-PHK-02520
(1)
Modular power supply, 850W, 80 PLUS Gold, ATX 3.1, PCIe Gen 5.1 support, Textured cables included
£114.95
£101.95
(incl. VAT)
Save 5%
Phanteks AMP GH 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-PHK-02519
(3)
Modular power supply, 850W, 80 PLUS Gold, ATX 3.1, PCIe Gen 5.1 support, Textured cables included
£104.99
£99.95
(incl. VAT)
Save 12%
Seasonic Core GX-850-V2 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-SSC-03647
The Seasonic Core GX ATX 3.1 2024 power supply offers high efficiency, enhanced stability, and quiet operation, ideal for modern gaming rigs and powerful workstations.
£129.95
£115.00
(incl. VAT)
Corsair RMe Series RM850e 850W ATX 3.1 PCIe 5.1 Cybenetics Gold Modular Power Supply
POW-CRS-03875
(2)
CORSAIR RMe Series Fully Modular Low-Noise Power Supplies with ATX 3.1 and PCIe 5.1 compliance provide quiet, reliable power with Cybenetics Gold efficiency to a wide variety
of PC builds.
£124.99
(incl. VAT)
Save 9%
be quiet! Pure Power 12 850W 80 Plus Gold Power Supply 80 Plus Gold Power Supply
POW-BEQ-04390
Pure Power 12 850W is ATX 3.1 compliant and PCIe 5.1 compatible and offers 80 PLUS® Gold efficiency and a silence-optimized 120mm be quiet! fan.
£99.95
£91.00
(incl. VAT)
Gigabyte UD850GM PG5 V2 ICE ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply - White
POW-GIG-07002
Intel ATX 3.1 and PCIe Gen 5.1 ready, 100% Japanese capacitors, 120mm smart hydraulic bearing (HYB) fan, 80 PLUS Gold certified, Fully modular design
£97.99
(incl. VAT)
Save 10%
ASRock Phantom Gaming 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-ASR-04365
The ASRock Phantom Gaming series power supply supports both current and future standards, fully compliant with ATX12V V3.1 and PCIe Gen 5.1. Ideal for both current systems and future builds, this power supplies can handle up to 220% power excursion and respond swiftly to power spikes, ensuring reliable, safe power for your components.
£154.99
£139.99
(incl. VAT)
Save 9%
APNX MAX G1 850W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-APN-05584
Compact high-end power supply, 850 watts output, 80 PLUS Gold & Cybenetics Platinum certified, quiet 135 mm FDB fan with zero-RPM mode, ATX 3.1 & PCIe 5.1 ready, including 12V 2x6-pin connector, Japanese capacitors for long lifespan
£109.99
£100.00
(incl. VAT)
Save 6%
Asrock PRO-850G 80 Plus Gold ATX 3.1 PCIE 5.1 Power Supply
POW-ASR-07510
The Asrock PRO series is created for value-focused system builders, offering 80 PLUS Gold rating, high quality cabling and solid internal components.
£79.99
£74.99
(incl. VAT)
PC Power Supplies 800W - 850W PSUs
Game like never before with an 850W PC power supply from Overclockers UK, expertly designed to offer the best possible power delivery for the latest gaming hardware. Whether you're assembling a new gaming PC or upgrading your current computer, our selection of 850W PSUs will ensure your gaming experience remains unrivalled. What’s more, you can take your pick from a huge range of industry-leading brands, including Corsair, EVGA, Seasonic, and more!
Want to Read More?
Where do all these cables go? PSUs have a lot of cables, and knowing which one goes where is super important! In this guide on the Overclockers UK Blog, we’ve covered everything you need to know about PC power supply cables and connectors.
Read MoreThe Overclockers Difference
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.
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 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.
Stay Up To Date
Keep me up to date with the latest news, product launches and promotions
* Required field
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
