• Sale
  • Blogs
  • About us
  • Sale
Home & Interior
Home Appliances

PSU Units

Looking for the right PSU? At PriceRunner, we guide you to the best choice for your needs. Whether you're building a new PC or upgrading an existing one, we list a wide range of PSUs from various brands and retailers. Use our handy category filters to narrow your options by wattage, efficiency rating, or price range. This makes it easy to find the PSU unit that matches your requirements. Compare prices and features side-by-side to ensure you get the best value for your money. Our comprehensive listings are updated regularly to provide you with the most accurate information. We aim to simplify your decision-making process and help you find what you're looking for without any hassle. Ready to power up your PC with the right PSU? Begin here and make the right choice for your setup!

Try flexible payments withKlarnaLearn how

Filter
  • PSU Units
Product Properties
Connections
Cooling
Power Source
Measures

1000+ products

Show as table
PSU Units MSI Mag A1000GLS PCIE5 Power Supply Unit
MSI Mag A1000GLS PCIE5 Power Supply Unit
£145.99
Out of stock
PSU Units Be Quiet! 1000W Straight Power 12 PSU
Be Quiet! 1000W Straight Power 12 PSU
£167.96
2 stores
PSU Units DeepCool PL750D 750W Power Supply
DeepCool
DeepCool PL750D 750W Power Supply
£44.98
2 stores
PSU Units AeroCool Integrator 600W 80 Plus Bronze Power Supply
AeroCool Integrator 600W 80 Plus Bronze Power Supply
£40.22
2 stores
PSU Units Asrock PRO-650B ATX Power Supply Unit
Asrock PRO-650B ATX Power Supply Unit
£50.99
2 stores
PSU Units Lian Li SP850 V2 Gold Modular Power Supply
Lian Li SP850 V2 Gold Modular Power Supply
£114.98
2 stores
PSU Units Asrock PRO-650G 650W ATX 80 Plus Gold Modular Power Supply
Asrock PRO-650G 650W ATX 80 Plus Gold Modular Power Supply
£65.99
3 stores
PSU Units Asrock Pro Series Pro-850b 850w Atx 80 Bronze Power Supply
Asrock Pro Series Pro-850b 850w Atx 80 Bronze Power Supply
£69.76
3 stores
Be Quiet! System Power 11 450w Bronze Atx
Be Quiet! System Power 11 450w Bronze Atx
£44.99
5 stores
Dell 750W C-DC Power Supply Unit
Dell 750W C-DC Power Supply Unit
£56.90
2 stores
Asrock Pro Series Pro-750b 750w Atx 80 Bronze Power Supply
Asrock Pro Series Pro-750b 750w Atx 80 Bronze Power Supply
£59.99
3 stores
Asrock Pro Series Pro-850g 850w Atx 80+ Power Supply
Asrock Pro Series Pro-850g 850w Atx 80+ Power Supply
£81.73
2 stores
Cisco PWR-CH1-400WAC Network Switch
Cisco PWR-CH1-400WAC Network Switch
£2,105.47
2 stores
HP Y5F27AV Indoor Ac Adapter 65W
HP Y5F27AV Indoor Ac Adapter 65W
£52.98
2 stores
HP P S MT 250W ENT18 92PCT HV 12V
HP P S MT 250W ENT18 92PCT HV 12V
£128.24
2 stores
Lian Li SP Platinum 850W ATX 3.1 PCIe Modular
Lian Li SP Platinum 850W ATX 3.1 PCIe Modular
£142.99
3 stores
Asrock PRO-750G 80 Plus Gold ATX PCIE
Asrock PRO-750G 80 Plus Gold ATX PCIE
£72.99
2 stores
Fortron FSP 2000W Gold F M Cannon Pro
Fortron FSP 2000W Gold F M Cannon Pro
£362.72
3 stores
Asrock PRO-750G Power Supply Unit 750 W
Asrock PRO-750G Power Supply Unit 750 W
£73.99
2 stores
Lian Li SX Platinum 1000W Fully Modular
Lian Li SX Platinum 1000W Fully Modular
£130.99
2 stores
Thermaltake Toughpower PT 1000W Fully Modular PCIE 5.1 AT
Thermaltake Toughpower PT 1000W Fully Modular PCIE 5.1 AT
£114.98
2 stores
Dell 331-5929 Power Supply Unit 750 W
Dell 331-5929 Power Supply Unit 750 W
£59.52
2 stores
Dell PWR Sply 825W EP
Dell PWR Sply 825W EP
£194.69
2 stores
Lian Li 850W Sx Platinum Single Rail
Lian Li 850W Sx Platinum Single Rail
£108.98
2 stores
Be Quiet! Dark Power Pro 13 1600w Titanium Atx 3.1 Psu
Be Quiet! Dark Power Pro 13 1600w Titanium Atx 3.1 Psu
£320.64
2 stores
Corsair RM1000X Shift 2025 1000W Gold PCIe 5.1 ATX
Corsair RM1000X Shift 2025 1000W Gold PCIe 5.1 ATX
£164.99
2 stores
Ubiquiti UISP UACC-PSU-27V-250W Inverter Power Adapter
Ubiquiti UISP UACC-PSU-27V-250W Inverter Power Adapter
£123.14
2 stores
Fractal Design Ion 3 Gold 750W Fully Modular 80+ Gold ATX 3.1
Fractal Design Ion 3 Gold 750W Fully Modular 80+ Gold ATX 3.1
£74.99
2 stores
DC 12V 300W 24Pin ATX Motherboard ITX Power Supply
DC 12V 300W 24Pin ATX Motherboard ITX Power Supply
£22.43
2 stores
Thermaltake Toughpower GT Black 1000W
Thermaltake Toughpower GT Black 1000W
£109.90
2 stores
Lenovo 500W Power Supply Unit
Lenovo
Lenovo 500W Power Supply Unit
£95.70
2 stores
Dell 250W Desktop Power Supply
Dell 250W Desktop Power Supply
£67.06
2 stores
Dell 305W Power Supply
Dell 305W Power Supply
£63.44
2 stores
MSI 750W Power Supply Unit 306-7ZP1B11-CE0
MSI 750W Power Supply Unit 306-7ZP1B11-CE0
£225.51
3 stores
Seasonic 850W Focus GX PCIe 5.1 80 Plus Gold
Seasonic 850W Focus GX PCIe 5.1 80 Plus Gold
£143.98
2 stores
Fortron Cannon PRO 2500W Power Supply Unit ATX ATX3.1 Black
Fortron Cannon PRO 2500W Power Supply Unit ATX ATX3.1 Black
Platinum 80 PLUS Certification
£529.74
3 stores
Antec CSK1000 Pro 1000W 80PLUS Bronze ATX 3.1
Antec CSK1000 Pro 1000W 80PLUS Bronze ATX 3.1
£79.99
2 stores
Cooler Master 550W MWE Gold V3 ATX3.1
Cooler Master 550W MWE Gold V3 ATX3.1
Gold 80 PLUS Certification
£48.59
4 stores
Justop Black ATX 500W Power Supply 120mm
Justop Black ATX 500W Power Supply 120mm
£22.50
2 stores
AWD-IT GameMax GMXRPG600 Rampage 600W White Wired 80 Plus Bronze ATX Power Supply
AWD-IT GameMax GMXRPG600 Rampage 600W White Wired 80 Plus Bronze ATX Power Supply
Bronze 80 PLUS Certification
£34.99
2 stores
Montech Century II 1200W
Montech Century II 1200W
Gold 80 PLUS Certification
£119.99
4 stores
PowerWalker VI 850 SHL IEC UK 480W UPS
PowerWalker VI 850 SHL IEC UK 480W UPS
£73.16
2 stores
LC-Power LC300SFX V3.21 285W
LC-Power LC300SFX V3.21 285W
White (Standard) 80 PLUS Certification
£66.35
2 stores
PowerWalker VI 1000 SB UK UPS 600W
PowerWalker VI 1000 SB UK UPS 600W
£74.99
2 stores
HPE 865414-B21 Power Supply Unit 800 W
Trending
HPE 865414-B21 Power Supply Unit 800 W
£75.70
3 stores
Xilence Performance C 500W
Xilence Performance C 500W
£71.49
2 stores
Xilence Performance C 400W
Xilence Performance C 400W
£66.53
3 stores
Asrock 550W Challenger CL-550B PSU Fully Wired 80+ Bronze
Asrock 550W Challenger CL-550B PSU Fully Wired 80+ Bronze
Bronze 80 PLUS Certification
£63.99
2 stores

PSU Units: 3 things to consider before buying

Before purchasing PSU Units, it's crucial to determine the power requirements of your computer system. Calculate the total wattage needed by adding up the power consumption of all components, including the CPU, GPU, and peripherals. We recommend opting for a PSU Unit with a wattage capacity slightly above your calculated needs to ensure efficiency and allow for future upgrades. For instance, if your system requires 450 watts, consider a PSU Unit that offers 550 watts or more.

Efficiency ratings are essential when choosing PSU Units as they indicate how effectively power is converted from AC to DC. Look for units with an 80 Plus certification, which ensures at least 80% energy efficiency at various loads. Higher certifications like 80 Plus Gold or Platinum offer even better efficiency, reducing electricity costs and heat output. Investing in efficient PSU Units not only benefits your wallet but also contributes to a greener environment.

Ensure that the PSU Units you consider have sufficient connectors for your components. Check for compatibility with your motherboard, graphics card, and additional peripherals such as SSDs and cooling systems. Modular PSU Units offer flexibility by allowing you to use only the cables you need, improving airflow and reducing clutter inside your case. This feature is particularly beneficial if you plan on upgrading components in the future.

PSU UNITS

FAQ

PSU Units are Power Supply Units that provide electricity to your computer components. They convert AC from the wall into DC that your computer can use. When choosing a PSU Unit, consider wattage, efficiency ratings like 80 Plus, and the number of connectors needed for your components.

PSU Units are selected based on power requirements and compatibility with your system. Calculate the total wattage needed by all components and choose a unit with slightly higher capacity. Check for efficiency ratings and ensure it fits in your computer case.

PSU Units' efficiency indicates how much power is lost as heat during conversion. Higher efficiency means less energy waste, lower electricity bills, and reduced heat output. Look for units with an 80 Plus certification, which ensures at least 80% efficiency at various loads.

You’ve viewed 48 out of 2016 products
1

...

3

...

6

8

10

...

26

...

42
¹

Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. Credit subject to status. Ts&Cs and late fees apply.

Advertisement

Power up your build: Choosing the right PSU

Selecting the right power supply unit (PSU) is crucial for your computer's performance and longevity. It ensures your system runs smoothly by delivering consistent power to all components. Let's explore the different types and features of PSU units to help you make the best choice for your setup.

Types of PSU units

PSU units come in various types, each designed to meet specific needs. Among the popular options are SFX and ATX. SFX units are compact, making them ideal for small form factor cases. They pack a punch despite their size, providing reliable power for mini-ITX builds. On the other hand, ATX units are larger and suited for standard or mid-tower cases, offering more power and additional features.

Efficiency ratings

Efficiency is a key factor when choosing a PSU. It indicates how much power is converted into usable energy, with the rest lost as heat. The 80 PLUS certification is a standard measure of efficiency. Bronze, Silver, and Gold are common ratings, with Gold being more efficient than Bronze. For those seeking top-tier efficiency, Platinum and Titanium ratings offer even better performance, ensuring minimal energy waste and lower electricity bills.

Key features to consider

When selecting a PSU, consider features like modularity and cable management. Modular PSUs allow you to connect only the cables you need, reducing clutter and improving airflow. This feature is especially useful in compact builds. Additionally, look for units with silent operation, achieved through efficient cooling fans or fanless designs. A PSU with a high-quality fan will run quietly, even under load, providing a pleasant computing experience.

Colour and aesthetics

Aesthetics might not affect performance, but they do enhance your build's appearance. White PSU units are a popular choice for those aiming for a sleek, modern look. They blend seamlessly with white cases and components, creating a cohesive aesthetic. Whether you're building a minimalist setup or a vibrant gaming rig, the right colour can make a difference.

Understanding wattage requirements

Determining the correct wattage is essential for a stable system. Calculate the total power consumption of your components, including the CPU, GPU, and peripherals. It's wise to choose a PSU with a bit more wattage than needed to allow for future upgrades. This ensures your system remains reliable and efficient over time.

Budget and brand considerations

While it's tempting to save money, investing in a quality PSU is crucial. A reliable unit from a reputable brand offers peace of mind and protection for your components. Brands like Corsair, EVGA, and Seasonic are known for their dependable PSU units. They offer a range of options to suit different budgets and requirements, making them a good choice for any build.

Make a well-thought-out decision by considering these factors when choosing a PSU. Use PriceRunner to compare prices and find the best deal on PSU units for your next build.

Shop smarter with PriceRunner

Find the best option with the help of our handy tools. Compare prices, apply smart filters, read user reviews, and explore price history—all in one place.

Filter and sort

Searching for something particular? Filter by everything from price and brand to material or colour to see only the products relevant to you. Since delivery options and shipping costs can vary between shops, you can easily find your perfect match by filtering based on these criteria as well.

Reviews: See what other users think

Reviews from other users can provide valuable insights into the product's features and durability. Product ratings help you quickly assess popularity and customer satisfaction.

Price history: Find real deals

To ensure that you've found a good deal, you can view the product's price history. Select a time period and whether you wish to include international prices. Price history for the past three months is shown by default, but you can also look into a longer time period. If you want to determine if a deal from a specific shop is as good as it seems you can click on "Choose store" above the price graph to show an individual shop's pricing history.

¹

Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. Credit subject to status. Ts&Cs and late fees apply.

PriceRunner
  • About us
  • Contact us
  • Newsroom
  • Job openings

Since 1999, PriceRunner has helped millions of visitors find the best products at the best prices.

PriceRunner is entirely independent and free to use. Our vision is to be your go-to site that you can always count on when comparing products and prices. PriceRunner became a part of Klarna 2022.

You can compare prices and products with us in:

Sweden, Denmark, The UK, Norway, USA, Germany, Austria, Finland, France, Ireland, Italy, Netherlands, Spain
Copyright 1999-2026 Klarna Technologies AB
Images on this website may be AI-generated.