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Power Supplies

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MSI MAG A750BN 750W ATX 80+ Bronze PCIe 5.0 Power Supply
MSI MAG A750BN 750W ATX 80+ Bronze PCIe 5.0 Power Supply
£69.99£50.99 inc. VAT

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ASUS Prime 750W 80 PLUS Bronze ATX PSU Power Supply
ASUS Prime 750W 80 PLUS Bronze ATX PSU Power Supply
£69.99£53.99 inc. VAT

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MSI MPG A1000G PCIE5 1000W ATX 3.0 80 PLUS Gold PSU Power Supply
MSI MPG A1000G PCIE5 1000W ATX 3.0 80 PLUS Gold PSU Power Supply
£179.99£139.99 inc. VAT

76

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MSI MAG A650BN 650W ATX 80+ Bronze Power Supply
MSI MAG A650BN 650W ATX 80+ Bronze Power Supply
£49.99£42.99 inc. VAT

25

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MSI MPG A850G 850W ATX 3.0 Full Modular 80+ Gold PCIe 5.0 Compact Power Supply

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ASUS ROG Strix 1000W 80 PLUS Platinum ATX 3.1 Fully Modular PSU Power Supply

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Asrock 850W Challenger CL-850G 850W 80+ Gold ATX 3.1 PSU Power Supply

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ASUS ROG THOR 1000W Platinum III ATX 3.1 80 PLUS Platinum PSU Power Supply

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Vida Lite AA-500-YY 500W 24-pin ATX PSU Power Supply

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ASUS ROG Loki SFX-L 750W, Fully Modular Power Supply, 80+ Platinum, 120mm PWM ARGB Fan, Aura Sync, ATX 3.0 Compatible, PCIe 5.0 Ready, 10 Year Warranty - 90YE00N4-B0NA00

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Supermicro Redundant 1U DC 48V Power Supply 600W PMBus 1.2 Support - PWS-601S-1R
Corsair CX Series 750W 80 PLUS Bronze Fully Wired Power Supply

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MSI MAG A550BN 550W ATX 80 PLUS Bronze PSU Power Supply

25

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DeepCool PF500 500W 80+White ATX PSU Power Supply

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Seasonic Focus GX-850 850W ATX 3.0 80 PLUS Gold PSU Power Supply

44

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Power Up Your Build with Reliable, High-Performance PSUs

Upgrading your setup or starting a fresh build? We've got you covered with trusted options, including sleek modular PSU designs for cleaner cable management, energy-efficient 80 Plus Gold certified models, and powerful ATX power supplies ready to handle demanding hardware. The right power supply keeps everything stable, protected, and running at peak efficiency. At Laptop Outlet, finding the perfect PSU for your build is simple, stress-free and built around performance you can depend on.

Why Choose Power Supplies?

A reliable power supply unit (PSU) converts mains electricity into usable power for your components while protecting them from voltage fluctuations and overload. Here's why investing in a quality power supply matters:

  • System Stability — A dependable ATX power supply ensures consistent voltage delivery to your CPU, GPU, and storage devices.
  • Component Protection — Built-in safeguards protect against power surges, short circuits and overheating.
  • Energy Efficiency — 80 Plus Gold certified units reduce wasted energy and lower electricity costs.
  • Cleaner Cable Management — A modular PSU reduces cable clutter and improves airflow inside your case.
  • Optimised for Gaming — Choosing the best PSU for gaming PC builds ensures your graphics card and processor receive stable, uninterrupted power during demanding sessions.

How to Pick the Right Power Supplies

Choosing the correct PSU requires careful consideration of compatibility, performance and future expansion.

1. Power Supply Wattage

One of the most important factors is power supply wattage.

  • 400W—550W — Suitable for entry-level or office PCs with integrated graphics.
  • 600W—750W — Ideal for mid-range gaming systems with dedicated GPUs.
  • 850W and above — Recommended for high-end gaming PCs, overclocked processors or multi-GPU setups.

If you're building the best PSU for gaming PC performance, always allow extra headroom to accommodate peak power draw and future upgrades.

2. Efficiency Rating

Efficiency ratings indicate how effectively a PSU converts electricity into usable power.

  • 80 Plus Bronze — Reliable entry-level efficiency.
  • 80 Plus Gold certified — Higher efficiency, lower heat output, and reduced energy waste.

An 80 Plus Gold certified unit is an excellent choice for gamers and professionals who want improved energy efficiency and quieter operation.

3. Form Factor & Compatibility

Most modern desktops use an ATX power supply, which fits standard mid tower cases and full-tower builds. Always ensure compatibility with your case dimensions and motherboard layout.

If you're pairing your PSU with premium components, check connector types and cable lengths to ensure seamless integration.

4. Modular vsNon-Modular

A modular PSU allows you to attach only the cables you need. This:

  • Improves airflow
  • Reduces cable clutter
  • Makes installation easier
  • Enhances overall build aesthetics

For clean builds with strong cooling performance, modular designs are highly recommended, especially in cases equipped with airflow fans or liquid coolers.

5. Cooling & Noise Levels

Look for power supplies with intelligent fan control systems. Many premium PSUs feature temperature-controlled fans that only spin under load, keeping your system quieter during everyday tasks.

If you're building a performance-focused PC with liquid coolers and high airflow configurations, choosing a PSU with efficient thermal management helps maintain optimal internal temperatures.

Why Choose Laptop Outlet for Power Supplies?

When it comes to sourcing reliable power supplies in the UK, Laptop Outlet offers trusted quality and competitive pricing. Here's why people trust us:

  • Wide Selection — From entry-level units to high-performance modular PSU designs.
  • Energy-Efficient Options — Including 80 Plus Gold certified models for maximum efficiency.
  • Trusted ATX Power Supply Compatibility — Suitable for a wide range of desktop components.
  • Ideal for Gaming Builds — Find the best PSU for gaming PC configurations across leading brands.
  • Competitive Pricing — Excellent value across all power supply wattage categories.
  • Complete Build Solutions — Pair your PSU with gaming motherboards, airflow fans, mid tower cases, liquid coolers, HP, Lenovo, Dell or ASUS desktop components.
  • Fast UK Delivery — Reliable shipping to keep your build on track.
  • Multiple Payment Options — Pay securely using your major cards, PayPal, Klarna, Apple Pay, or Google Pay. Flexible instalment options are available via PayPal and Klarna.
  • Expert Customer Support — Guidance to help you select the right PSU for your configuration.

Explore our full range of power supplies today and secure dependable performance for your next PC build. From modular PSU designs to 80 Plus Gold certified efficiency, Laptop Outlet provides reliable solutions for every desktop configuration.

 

Read More:

How to Stop a Laptop from Overheating
5 Ways to Keep Laptop Battery Healthy
Air vs Liquid Cooling: Which is Best for Your PC Build

Read more

FAQs

The recommended power supply for a PC largely depends on the components you intend to use, particularly the processor and graphics card. Most standard home and office computers can operate comfortably with a power supply in the range of 400 to 600 watts. However, gaming PCs, workstations, or systems with high-end graphics cards and multiple drives typically require a higher wattage, often ranging from 650 to 850 watts or more. It is also advisable to choose a power supply with an efficiency certification, such as 80 Plus Bronze, Silver, Gold or Platinum, to ensure energy efficiency and reliability.
Whether a 500W power supply is sufficient depends on your computer’s specific hardware. For basic computing tasks, such as web browsing, word processing and streaming, a 500W power supply is usually adequate. It is also often sufficient for systems with entry-level graphics cards and processors. However, if your PC is equipped with more powerful components, such as a high-end graphics card, a powerful multi-core processor or multiple storage drives, you may need a higher wattage to ensure stability and avoid power-related issues. It is always recommended to calculate the total power requirements of your components before making a decision.
The lifespan of a PC power supply can vary depending on its quality, usage and environmental factors. On average, a well-made power supply can last between five and seven years under normal conditions. Higher-quality models, particularly those with good efficiency ratings and strong build quality, may last even longer.
Several signs may indicate that your PC requires a new power supply. If your computer randomly restarts or shuts down unexpectedly, it could point to power issues. You might also notice unusual noises, such as buzzing or grinding, coming from the power supply unit itself. Additionally, if your system fails to power on or certain components like the graphics card or drives are not functioning correctly, it may be a result of insufficient or unstable power delivery.