Advertising Disclosure Power Supplies Comparison - August 2025
7 Best Power Supplies In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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| 1 Best Choice  9.8Exceptional | 2  9.6Exceptional | 3  9.5Excellent | 4  9.4Excellent | 5 Best Value  9.3Excellent | 6  9.0Excellent | 7  8.8Very Good |
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ModelMSI 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 | 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 CX750 80 PLUS Bronze Non Modular Low-Noise ATX 750 Watt Power Supply - UK - Black | Model 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 | Model JUSTOP Black 750W PSU, Switching Power Supply, Computer Desktop PC ATX 120mm Fan 8-Pin 12V, 6+2 Pin PCI-E, 6x SATA | Model CORSAIR RM750e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black | Model JUSTOP Black 650W PSU, ATX Switching Power Supply, Computer Desktop PC, With 120mm Fan, 8-Pin 12V, 6+2 Pin PCI-E, 6x SATA (650W) |
BrandMSI | Brand Corsair | Brand Corsair | Brand GAMEMAX | Brand JUSTOP | Brand Corsair | Brand JUSTOP |
Reviews | Reviews | Reviews  | Reviews | Reviews | Reviews - | Reviews  |
Features | ||||||
Sound level 9.8 | Sound level 9.8 | Sound level 9.8 | Sound level 9.4 | Sound level 9.3 | Sound level 9.1 | Sound level 9.1 |
Easy installation 9.9 | Easy installation 9.9 | Easy installation 9.8 | Easy installation 9.4 | Easy installation 9.1 | Easy installation 8.9 | Easy installation 8.6 |
Tech Specs | ||||||
product dimensions 16 x 15 x 8.6 cm 1.59 kg | product dimensions 16 x 15 x 8.6 cm 3.12 kg | product dimensions 12.5 x 15 x 8.6 cm 2 kg | product dimensions 16 x 15 x 8.7 cm 1.5 kg | product dimensions 15 x 14 x 8.5 cm 1.25 kg | product dimensions 15 x 14 x 8.6 cm 1.5 kg | product dimensions 15 x 14 x 8.5 cm 1.18 kg |
item weight 1.59 kg | item weight 3.12 kg | item weight 2 kg | item weight 1.5 kg | item weight 1.25 kg | item weight 1.5 kg | item weight 1.18 kg |
wattage 650 watts | wattage 1000 watts | wattage 750 watts | wattage 850 watts | wattage 750 watts | wattage 750 watts | wattage 650 watts |
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 | guaranteed software updates until unknown |
form factor ATX | form factor ATX | form factor ATX | form factor ATX | form factor ATX | form factor - | form factor ATX |
customer reviews4.6 4.6 out of 5 stars 759 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 4.7 4.7 out of 5 stars 129 ratings 4.7 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 9 ratings 4.7 out of 5 stars | customer reviews 5.0 5.0 out of 5 stars 5 ratings 5.0 out of 5 stars | customer reviews - | customer reviews 4.2 4.2 out of 5 stars 3 ratings 4.2 out of 5 stars |
color black | color Black | color black | color - | color Black | color Black | color Black |
are batteries included No | are batteries included No | are batteries included - | are batteries included No | are batteries included No | are batteries included - | are batteries included No |
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
9.8
1MSI20% OffMSI 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
9.9 Easy installation9.8 Sound LevelWhy we love it
Energy-efficient and cost-saving.
Stable power for demanding tasks.
Quiet operation enhances user experience.
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9.6
2Corsair
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
9.9 Easy installation9.8 Sound LevelMain 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
3Corsair
CORSAIR CX750 80 PLUS Bronze Non Modular Low-Noise ATX 750 Watt Power Supply - UK - Black
9.8 Sound Level9.8 Easy installationWhy we love it
Efficient energy use reduces electricity costs.
Quiet operation under low to moderate loads.
Compact design fits most PC cases.
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.
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.
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.
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.
