7 Best Power Supply Pc [UK] (2025)

2025 Expert Picks

Last Updated: May 2025

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Last Updated: May 2025

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Best Power Supply Pc

Premium Pick

NZXT C1200 PSU - 1200 Watt Gaming PC Power Supply – ATX 3.0 – PCIe 5.0 12VHPWR Connector – 80 Plus Gold Efficiency – Fully Modular – Zero Fan Mode – Black Sleeved Cables – 10 Year Warranty – Black

NZXT

Available in 5 Sizes, 6 Styles

9.7

NZXT C1200 PSU - 1200 Watt Gaming PC Power Supply – ATX 3.0 – PCIe 5.0 12VHPWR Connector – 80 Plus Gold Efficiency – Fully Modular – Zero Fan Mode – Black Sleeved Cables – 10 Year Warranty – Black

Dimensions: 0.00 x 0.00 x 0.00

Weight: 7.76 pounds

Release Date: 12/01/2023

Size: 80 Plus Gold Black

Unit Count: 1

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Picked by 397 people today

Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black

Corsair

Available in 3 Styles, 4 Sizes, 2 Colors

9.5

Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black

Color: Black

Dimensions: 3.39 x 5.91 x 5.51 inches

Weight: 3.35 Pounds

Release Date: 14/04/2023

Size: 850 Watts

Unit Count: 1

Energy Class: 80 Plus Gold

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Popular

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

Corsair

Available in 2 Styles, 5 Sizes

9.5

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

Color: Black

Dimensions: 3.39 x 6.30 x 5.91 inches

Weight: 3.90 pounds

Release Date: 10/09/2024

Size: 850W

Unit Count: 1

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Gigabyte

9.2

GIGABYTE UD850GM Power Supply Unit - 850W, 80 PLUS Gold Certified, Fully Modular, Japanese Capacitors, UK plug

Color: Black

Dimensions: 3.39 x 5.91 x 5.51 inches

Weight: 5.05 pounds

Release Date: 01/01/2023

Unit Count: 1

Energy Class: 80 Plus Gold

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GameMax

9.0

GameMax 850W Rampage Power Supply (No Power Cable inc.), Full-Modular, APFC, Japanese Tk Main Capacitor, 80 Plus Bronze, 88% Efficiency, 14cm Cooling Fan, Real Power Gaming | Black

Dimensions: 3.43 x 6.30 x 5.91 inches

Weight: 3.31 pounds

Release Date: 18/09/2023

Unit Count: 1

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Corsair

Available in 3 Sizes

8.8

CORSAIR CX550 80 PLUS Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - UK - Black

Color: black

Dimensions: 3.39 x 4.92 x 5.91 inches

Weight: 4.12 pounds

Release Date: 14/11/2023

MSI

Available in 8 Sizes, 4 Styles

8.6

MSI MAG A650BN Power Supply Unit, UK Plug - 650W, 80 Plus Bronze Certified, ATX PSU, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan - 5 Year Warranty

Color: black

Dimensions: 3.39 x 6.30 x 5.91 inches

Weight: 3.51 pounds

Release Date: 30/09/2021

Size: 650W

Unit Count: 1

Energy Class: 80 Plus Bronze

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Our Top Choice

Best Power Supply Pc

Premium Pick

NZXT

Available in 5 Sizes, 6 Styles

9.7

NZXT C1200 PSU - 1200 Watt Gaming PC Power Supply – ATX 3.0 – PCIe 5.0 12VHPWR Connector – 80 Plus Gold Efficiency – Fully Modular – Zero Fan Mode – Black Sleeved Cables – 10 Year Warranty – Black

Dimensions: 0.00 x 0.00 x 0.00

Weight: 7.76 pounds

Release Date: 12/01/2023

Size: 80 Plus Gold Black

Unit Count: 1

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Expert Reviews

At 7-Best, we meticulously analyze and compare products, partnering with top retailers. Our aim is to deliver unbiased, comprehensive reviews to assist your informed decisions.

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Using advanced data analysis, we pinpoint top-rated products based on real purchase trends.

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We leverage expert analysis and advanced technology to evaluate thousands of products. Our unbiased reviews are designed to save you time and ensure you find the best options with confidence.

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2025 Expert Picks

Finding the perfect product can be challenging. That’s why our team invests countless hours in research, breaking down key insights into clear, side-by-side comparisons. Our top pick is based on what matters most to our readers, the most popular products in each category, and a data-driven assessment of all available options. We aim to provide you with all the details you need to make the best choice—quickly and confidently.

Energy Class

Compare Features

Energy Class	Premium Pick NZXT C1200 PSU - 1200 Watt Gaming PC Power Supply – ATX 3.0 – PCIe 5.0 12VHPWR Connector – 80 Plus Gold Efficiency – Fully Modular – Zero Fan Mode – Black Sleeved Cables – 10 Year Warranty – Black NZXT On Amazon	Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black Corsair On Amazon	Popular 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 Corsair On Amazon	GIGABYTE UD850GM Power Supply Unit - 850W, 80 PLUS Gold Certified, Fully Modular, Japanese Capacitors, UK plug Gigabyte On Amazon	GameMax 850W Rampage Power Supply (No Power Cable inc.), Full-Modular, APFC, Japanese Tk Main Capacitor, 80 Plus Bronze, 88% Efficiency, 14cm Cooling Fan, Real Power Gaming \| Black GameMax On Amazon	CORSAIR CX550 80 PLUS Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - UK - Black Corsair On Amazon	Best Value MSI MAG A650BN Power Supply Unit, UK Plug - 650W, 80 Plus Bronze Certified, ATX PSU, 12V Single-Rail, DC-to-DC Circuit, 120mm Fan - 5 Year Warranty MSI On Amazon
Deal
Deal	-	-	Save 16%	-	Save 7%	-	Save 17%
Dimensions	0.00 x 0.00 x 0.00	3.39 x 5.91 x 5.51 inches	3.39 x 6.30 x 5.91 inches	3.39 x 5.91 x 5.51 inches	3.43 x 6.30 x 5.91 inches	3.39 x 4.92 x 5.91 inches	3.39 x 6.30 x 5.91 inches
Dimensions	0.00 x 0.00 x 0.00	3.39 x 5.91 x 5.51 inches	3.39 x 6.30 x 5.91 inches	3.39 x 5.91 x 5.51 inches	3.43 x 6.30 x 5.91 inches	3.39 x 4.92 x 5.91 inches	3.39 x 6.30 x 5.91 inches
Weight	7.76 pounds	3.35 Pounds	3.90 pounds	5.05 pounds	3.31 pounds	4.12 pounds	3.51 pounds
Weight	7.76 pounds	3.35 Pounds	3.90 pounds	5.05 pounds	3.31 pounds	4.12 pounds	3.51 pounds
Release Date	2023-01-12T00:00:01Z	2023-04-14T00:00:01Z	2024-09-10T00:00:01Z	2023-01-01T00:00:01Z	2023-09-18T00:00:01Z	2023-11-14T00:00:01Z	2021-09-30T00:00:01Z
Release Date	12/01/2023	14/04/2023	10/09/2024	01/01/2023	18/09/2023	14/11/2023	30/09/2021
Size	80 Plus Gold Black	850 Watts	850W	-	-	550W	650W
Size	80 Plus Gold Black	850 Watts	850W	-	-	550W	650W
Unit Count	1	1	1	1	1	1	1
Unit Count	1	1	1	1	1	1	1
Color	-	Black	Black	Black	-	black	black
Color	-	Black	Black	Black	-	black	black
Energy Class	-	80 Plus Gold	-	80 Plus Gold	-	-	80 Plus Bronze
Energy Class	-	80 Plus Gold	-	80 Plus Gold	-	-	80 Plus Bronze

Trusting our TOP Pick

+1000

Hours of research

+1 Million

Purchases analyzed

+5000

Brands Compared

+100

Categories Covered

We leverage expert analysis and advanced technology to evaluate thousands of products. Our unbiased reviews are designed to save you time and ensure you find the best options with confidence.