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Power Supplies Comparison - April 2026

7 Best Power Supplies In the UK

Last Updated - 07/04/2026

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Our Score

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Model

CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

Model

CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

Model

MSI MAG A750GL PCIE5 Power Supply Unit, 750W, 80 Plus Gold, Fully Modular, ATX 3.0, PCIe 5.0 GPU Support, 120mm FDB Fan, Full-Bridge LLC, Flat Black Cables - 7 Year Warranty

Model

MSI MAG A850GL PCIE5 Power Supply Unit, 850W, 80 Plus Gold, Fully Modular, ATX 3.0, PCIe 5.0 GPU Support, Black Flat Cables, 7 Year Warranty

Model

NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Watts - 80 PLUS Gold - 12V-2x6 Connector - Zero Fan Mode - 100% Japanese Capacitors - Black

Model

CORSAIR CX750 80 PLUS Bronze Non Modular Low-Noise ATX 750 Watt Power Supply - UK - Black

Model

CORSAIR CX650 80 PLUS Bronze Non Modular Low-Noise ATX 650 Watt Power Supply - UK - Black

Brand

Corsair

Brand

Corsair

Brand

MSI

Brand

MSI

Brand

NZXT

Brand

Corsair

Brand

Corsair

Reviews

5,996 reviews

Reviews

5,996 reviews

Reviews

10,900 reviews

Reviews

3,252 reviews

Reviews

1,156 reviews

Reviews

516 reviews

Reviews

516 reviews

Features

Sound level

9.6

Sound level

9.4

Sound level

9.8

Sound level

9.8

Sound level

9.3

Sound level

9.8

Sound level

9.6

Easy installation

9.4

Easy installation

9.3

Easy installation

9.6

Easy installation

9.6

Easy installation

9.1

Easy installation

9.8

Easy installation

9.6

Worth the money

9.4

Worth the money

9.3

Worth the money

9.6

Worth the money

9.6

Worth the money

9.1

Worth the money

9.4

Worth the money

9.4

Tech Specs

form factor

‎ATX

form factor

‎ATX

form factor

‎ATX

form factor

ATX

form factor

ATX

form factor

ATX

form factor

ATX

wattage

‎1000 watts

wattage

‎850 watts

wattage

‎750 watts

wattage

850 watts

wattage

850 watts

wattage

750 watts

wattage

650 watts

product dimensions

‎16 x 15 x 8.6 cm; 3.12 kg

product dimensions

‎16 x 15 x 8.6 cm; 1.77 kg

product dimensions

‎14 x 15 x 8.6 cm; 2.8 kg

product dimensions

14 x 15 x 8.6 cm 2.87 kg

product dimensions

-

product dimensions

12.5 x 15 x 8.6 cm 2 kg

product dimensions

12.5 x 15 x 8.6 cm 1.9 kg

item weight

‎3.12 kg

item weight

‎1.77 kg

item weight

‎2.8 kg

item weight

2.87 kg

item weight

-

item weight

2 kg

item weight

1.9 kg

guaranteed software updates until

‎unknown

guaranteed software updates until

‎unknown

guaranteed software updates until

‎unknown

guaranteed software updates until

unknown

guaranteed software updates until

-

guaranteed software updates until

unknown

guaranteed software updates until

unknown

color

‎Black

color

‎Black

color

‎Multicolour

color

Black

color

-

color

black

color

black

are batteries included

‎No

are batteries included

‎No

are batteries included

‎No

are batteries included

No

are batteries included

-

are batteries included

-

are batteries included

-

Available On

Available On

Available On

Available On

Available On

Available On

Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you

9.7
1

Corsair
14% Off

CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

9.6 Sound Level

9.4 Easy installation

9.4 worth the money
Main highlights

Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
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9.6
2

Corsair
14% Off

CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

9.4 Sound Level

9.3 Easy installation

9.3 worth the money

Why we love it

Fully modular for easy cable management.

High efficiency reduces power consumption.

Supports latest graphics cards natively.
Main highlights

Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection – no adapter necessary.
Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.
Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
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9.5
3

MSI
32% Off

MSI MAG A750GL PCIE5 Power Supply Unit, 750W, 80 Plus Gold, Fully Modular, ATX 3.0, PCIe 5.0 GPU Support, 120mm FDB Fan, Full-Bridge LLC, Flat Black Cables - 7 Year Warranty

9.8 Sound Level

9.6 Easy installation

9.6 worth the money

Why we love it

Highly efficient energy consumption.

Supports high-end GPUs and CPUs.

Durable design with advanced protections.
Main highlights

PCI-E 5.0 GPU SUPPORT - With the native 16-pin (12V2x6) PCIe connector, the PSU can feed up to 450W of power to a PCIe 5.0 GPU (NVIDIA & AMD supported) with a yellow plug to highlight any loose fit; A single-rail design provides ample power to the system
DURABLE DESIGN - A full-bridge LLC with DC-to-DC converter & active PFC design ensures robust output (OCP, OVP, OPP, OTP, SCP, UVP protections); Includes a 7-year limited warranty
COMPACT DESIGN - A 120mm fluid dynamic bearing (FDB) fan offers reliable cooling performance; The compact ATX frame runs only 140mm in length, leaving extra space for airflow & cable management
ATX 3.0 FULLY MODULAR - With ATX 3.0, the PSU can handle up to 2x total & 3x GPU power excursions, supporting even the most demanding GPUs; A full modular format with flat black cables (including cable bag) helps reduce clutter & improve airflow
80 PLUS GOLD CERTIFIED - An efficient power supply reduces energy consumption and heat load of the system. 80 PLUS Gold (up to 90%) is ideal for hardware with high power consumption such as high-end GPUs and CPUs
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Our ranking system

The topchoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.
We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. topchoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.

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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.

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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.

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Value for money

topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

Value for money

topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.

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