Looking for the best power supplies of 2026? Whether you’re planning a fresh build or upgrading your rig, we’re rounding up the standout PSUs that deliver serious stability, efficiency, and next-gen readiness.
Power supplies might not be the flashiest component in your PC, but they are easily one of the most important. A high-quality PSU keeps your system stable under load, protects expensive hardware, and ensures your components get clean, reliable power at all times. With modern GPUs and CPUs pulling more wattage than ever, choosing the right PSU is no longer optional, it’s critical.
Power Supplies
There are a few key things to think about when picking your next power supply. What wattage does your system actually need? Which form factor fits your case? Do you need native 12V 2×6 support for the latest graphics cards?
If you want a deeper dive into how PSUs work and how to choose the right one, check out our article on the anatomy of a power supply.
Whether you are a beginner or veteran PC expert who wants to touch up on your hardware knowledge, our dedicated ‘Anatomy Of’ series is for you.
We’ve designed this in-depth series of articles to showcase what goes into all the important PC components. In this article, we’ll be taking a deep dive into a PSU (power supply).
Best PSUs of 2026
We’ve pulled together some of the most exciting PSUs available and newly released this year. From ultra-efficient Platinum and Titanium units to feature-packed designs built for high-end hardware, these are the power supplies that deserve a spot in your next build.
Lian Li SX Platinum 1000W Modular Power Supply
The Lian Li SX 1000W is a high-end, ATX 3.1-ready power supply designed for modern gaming PCs and demanding workstations. Delivering up to 1000W with an 80 PLUS Platinum rating, it achieves up to 92% efficiency at half load, helping to reduce heat, noise, and wasted power. Premium Japanese 105°C capacitors ensure long-term stability, while a 120mm FDB fan with Zero RPM mode keeps noise to a minimum during low-load operation. Fully modular cabling makes clean builds easy, with braided cables included and the 12V-2×6 cable features a dual-colour connector to confirm proper seating. Comprehensive protection circuits and a 10-year warranty round out a PSU built for reliable, future-proof performance.
Lian Li SX Platinum 1000W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply – White
POW-LIA-06700
£130.99
(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKET
Lian Li SX Platinum 1000W ATX 3.1 PCIe 5.1 80 Plus Platinum Modular Power Supply
POW-LIA-06699
£130.99
(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKETAsrock Steel Legend SL-1000G 80 Plus Gold 1000W Modular Power Supply
The ASRock Steel Legend SL-1000G delivers 1000W of clean, stable power with fully modular cabling and native 12V-2×6 support for modern GPUs. Perfect for high-end gaming PCs and workstations. Premium 105°C Japanese capacitors ensure efficiency and reliability, the 135mm FDB fan keeps operations quiet, and iCOOL Intelligent Fan Control adjusts cooling automatically. Bette yet, dual-colour PCIe connectors simplify installation, and a full suite of protections with a 10-year manufacturer’s warranty provides long-term peace of mind.
ASRock Steel Legend 1000W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-ASR-04179
£159.95 £ 139.96
-12.5%(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKET
Asrock Steel Legend SL-1000G 80 Plus Gold 1000W Modular Power Supply – White
POW-ASR-06606
£175 £ 159.95
-8.6%(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKETLian Li RS 1200W Modular Power Supply
The Lian Li RS 1200W is a uniquely engineered ATX 3.1 power supply built for builders who value flexibility and clean cable routing. The standout feature is a rotatable AC inlet, allowing the PSU to be oriented up to 90 degrees to better suit space-limited cases and awkward PSU chambers. The modern, fully modular design features dual-side 24-pin motherboard outputs for easier cable routing in any chassis, along with native 12V-2×6 support for high-performance GPUs. Built with premium components including industrial-grade EPCOS capacitors, the RS 1200W achieves over 90% efficiency at 50% load, earning 80 PLUS Gold, PPLP Gold, and Cybenetics Gold certifications. Cooling is handled by a 135mm fan with Zero RPM mode for silent low-load operation, while the included RS USB Hub adds extra internal USB connectivity for up to eight devices, keeping your build tidy and adaptable.
Lian Li RS 1200W RS Hub ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-LIA-06174
£155.99 £ 147.95
-5.15%(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKET
Lian Li RS 1200W RS Hub ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-LIA-06175
£159.95 £ 144.95
-9.38%(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKETFSP VITA-1000GM 1000W 80+ Gold ATX 3.1 PCIE 5.1 Modular Power Supply
Compact and easy to use the FSP VITA-1000GM PSU is built for today’s high-performance PCs and tomorrow’s upgrades. Fully compliant with ATX 3.1 and PCIe 5.1, this PSU delivers stable 1000W power with 80 PLUS Gold efficiency, reaching close to 92% at typical loads for lower heat and quieter operation. A high-amperage single +12V rail, 105°C Japanese capacitors, and a refined LLC resonant design ensure reliability under heavy CPU and GPU workloads. What’s more, the fully modular cabling and shorter 140mm depth make this PSU ideal for cleaner builds and smaller cases. It’s a no-nonsense, future-ready PSU that balances efficiency, stability, and practicality.
FSP VITA-1000GM 1000W ATX 3.1 PCIe 5.1 80 Plus Gold Modular Power Supply
POW-FSP-06658
£129.95
(incl. VAT)
FREE SHIPPING
in stock
ADD TO BASKET
Best of Hardware
Looking to upgrade your gaming PC with the best of the best? Head on over to our hardware guide and see what goodies are just waiting to be added to your set-up!
Shop All Power Supplies
Not found the power supply that fits your build yet? At Overclockers UK, we stock a huge range of PSUs to suit every system, from compact SFX builds to high-wattage flagship rigs. Click the button below to explore the full range and find the perfect power supply for your next upgrade.
More Best of Hardware
Ready to Power Your Next PC?
From efficient Gold and Platinum units to future-ready ATX 3.1 powerhouses, there’s a PSU out there that matches your set-up. Let us know in the comments what PSU you’re rocking right now.
- 5 min read
Overclockers UK
Author
OcUK has been the home for PC gaming enthusiasts since 2012. The blog is chock full of hardware news, upcoming games, and handy guides. As such, the Overclockers UK Blog team is dedicated to bringing you top-quality content daily.
Read More >>