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Power Supplies Comparison - June 2025

6 Best Power Supplies In the UK

Last Updated - 27/06/2025

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Our Score

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Model

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

Model

CORSAIR RM650 80 PLUS Gold Fully Modular Low-Noise ATX 650 Watt Power Supply - UK - 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, Black Flat Cables, 7 Year Warranty

Model

CiT ATV Eco 500W 80 Plus Bronze 230V Power Supply (No Power Cable Included) - 500W ATV Eco, Fully Wired, Active PFC, Single Rail, 120mm Fan, ATX PSU | Black

Model

CiT Builder 500W Power Supply, Non Modular, PPFC, 70% Efficiency, 12cm Cooling Fan, An Excellent Entry Level Power Supply, No Power Cable Included | Black

Brand

Corsair

Brand

Corsair

Brand

Corsair

Brand

MSI

Brand

CiT

Brand

CiT

Reviews

516 reviews

Reviews

7,968 reviews

Reviews

4,700 reviews

Reviews

3,216 reviews

Reviews

12 reviews

Reviews

432 reviews

Features

Easy installation

9.8

Easy installation

9.6

Easy installation

9.4

Easy installation

9.6

Easy installation

9.1

Easy installation

9.1

Noise level

9.9

Noise level

7.7

Noise level

7.6

Noise level

9.8

Noise level

7.2

Noise level

7.0

Tech Specs

product dimensions

12.5 x 15 x 8.6 cm 2 kg

product dimensions

14 x 15 x 8.6 cm 2.14 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 8.5 cm 1.24 kg

product dimensions

14.2 x 15 x 8.6 cm 1.1 kg

form factor

ATX

form factor

ATX

form factor

ATX

form factor

ATX

form factor

ATX

form factor

ATX

item weight

2 kg

item weight

2.14 kg

item weight

1.77 kg

item weight

2.8 kg

item weight

1.24 kg

item weight

1.1 kg

wattage

750 watts

wattage

650 watts

wattage

850 watts

wattage

750 watts

wattage

500 watts

wattage

500 watts

customer reviews

4.7 4.7 out of 5 stars 129 ratings 4.7 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 1, 992 ratings 4.6 out of 5 stars

customer reviews

4.7 4.7 out of 5 stars 1, 175 ratings 4.7 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 804 ratings 4.6 out of 5 stars

customer reviews

5.0 5.0 out of 5 stars 3 ratings 5.0 out of 5 stars

customer reviews

4.1 4.1 out of 5 stars 108 ratings 4.1 out of 5 stars

guaranteed software updates until

unknown

guaranteed software updates until

unknown

guaranteed software updates until

unknown

guaranteed software updates until

unknown

guaranteed software updates until

unknown

guaranteed software updates until

unknown

color

black

color

Black

color

Black

color

-

color

Black

color

-

are batteries included

-

are batteries included

-

are batteries included

-

are batteries included

No

are batteries included

No

are batteries included

No

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

9.8
1

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

9.9 Noise level

9.8 Easy installation

Why we love it

Efficient energy use reduces electricity costs.

Quiet operation under low to moderate loads.

Compact design fits most PC cases.
Main highlights

Low-Noise Cooling: A 120mm thermally controlled low-noise cooling fan only spins at high speed when your power supply is under heavy stress, slowing down for quieter operation at lower loads.
Full Continuous Power: CORSAIR CX Series power supplies are guaranteed to deliver their full rated wattage of continuous power.
Compact Casing: 125mm length ensures an easy fit in almost all modern PC cases.
Black Sleeving and Casing: Black sleeved cables and a black powder-coated casing seamlessly fits your PC’s style.
80 PLUS Bronze Certified: Provides up to 88% operational efficiency, generating less heat and lowering your energy costs.
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9.7
2

Corsair
CORSAIR RM650 80 PLUS Gold Fully Modular Low-Noise ATX 650 Watt Power Supply - UK - Black

9.6 Easy installation

7.7 Noise level

Why we love it

Easy installation with modular cabling.

Quiet operation even at full load.

Reliable and efficient power supply.
Main highlights

Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
Fully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
80 PLUS Gold-Certified: Steady power output at up to 90% efficiency, and Cybenetics Platinum certified for lower power consumption, less noise, and cooler temperatures.
105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
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9.6
3

Corsair
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 Easy installation

7.6 Noise level

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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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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