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Top 10 power supplies
FAQ
- Do high wattage power supplies cost more to run?
- My brand new power supply doesn't work! Am I doing something wrong?
- Why should I buy a whole new PSU when I could just replace the noisy fan in my existing one?
- What is PFC (Power Factor Correction)?
- How do I know what size of wattage power supply I need?
- My new PSU came with a 24-pin connector but my motherboard needs 20 pins! Do I need an adaptor cable?
- What do the PSU safety protection abbreviations mean?
Quiet Power Supplies
Power is the lifeblood of any PC and it pays to make sure it's as clean and reliable as possible. Our high-quality range of power supply units offer a great combination of performance and value.
High Performance Quiet PSUs
It is highly recommended for a modern PC system to incorporate a high-quality PSU capable of coping with the power demands of the most up to date components. However, a powerful PSU does not necessarily need to be noisy! Quiet PC's range of near-silent power supply units all have quiet features to ensure a virtually silent.
Upgrading a noisy PC power supply
With any significant upgrade of your PC you should consider whether your new components need a more powerful and quiet PSU. Our range of virtually silent PSUs are able to handle the most demanding power requirements. Smooth, clean outputs, excellent regulation, effortless power delivery, rock-solid reliability day in, these are all features which make these quiet PC power supplies the number one choice for the discerning customer.
Why do you need a high quality PSU?
Compromising on your PSU can mean compromising on system stability. Poor voltage regulation and filtering from your PC power supply can cause component stress and cause your system to crash randomly. This can cause the loss of important data and ultimately decrease the lifespan and reliability of your PC. All of our quiet PSUs are standard 100% ATX compatible units. They are AMD approved and conform fully to Intel's ATX specification.
How can PSUs contribute to PC noise?
As the PC Power Supply Unit converts power from AC to low-voltage DC, some electricity is unavoidably converted to heat. To prevent the PSU getting too hot this heat is removed by a built in fan (or two). Fans can be a major cause of PC noise due to airflow and fan bearings. The virtually silent PSUs we have selected all address this by using innovative technology to optimise efficiency and reduce fan noise. For example our power supplies have a built-in temperature controlled fan. The fan's RPM will increase depending on the internal temperature of the PSU. Other power supplies go one step further and turn the fan off completely. It only rotates when the internal temperature of the PSU reaches a certain point. From a noise point of view this gives you quietness you would expect but also the peace of mind that the fan will start if things get a little hot.
Browse by PSU wattage
 600W or lower |  Above 600W |
Dell or HP owners
Our quiet power supply units are fully ATX compliant, which means that they will work in any standard ATX PC. You may or may not realise that PCs manufactured by Dell or HP may use a power supply which often looks to be industry-standard, but in fact employs different wiring which makes replacement of the power supply with an ATX model impossible. Sometimes the physical size of the PSU is different too. This approach ensures that when you need to replace or upgrade Dell or HP components, the only place you can buy them from is the manufacturer! With this in mind, Dell or HP owners please check that our PSUs are compatible with your system before you buy. However, we do know that Dell 8250, 8300 and 4600 models use standard ATX power supplies so you can use any of our power supplies in these machines.
Nofan P-500A Silent 500W 80PLUS Gold Fanless Modular Power Supply Unit |
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Price: £146.63
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Ultra |
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be quiet Straight Power 11 CM 1000W Modular PSU, BN285 |
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Price: £142.40
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Streacom ST-ZF240 ZeroFlex 240W Passive PSU for Streacom Chassis |
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Price: £117.52
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FSP Hydro G 850W Semi-Fanless Modular PSU, 80+ Gold |
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Price: £115.83
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be quiet Straight Power 11 CM 850W Modular PSU, BN284 |
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Price: £115.28
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be quiet Straight Power 11 CM 750W Modular PSU, BN283 |
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Price: £96.66
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FSP Hydro G 750W Semi-Fanless Modular PSU, 80+ Gold |
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Price: £90.83
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Streacom ST-NANO160 160W nanoPSU and AC/DC adapter block |
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Price: £88.65
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Micronics Astro GD White 750W Modular PSU, 80+ Gold |
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Price: £87.00
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be quiet Straight Power 11 CM 650W Modular PSU, BN282 |
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Price: £86.03
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FSP Hydro G 650W Semi-Fanless Modular PSU, 80+ Gold |
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Price: £78.33
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be quiet Straight Power 11 CM 550W Modular PSU, BN281 |
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Price: £76.87
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be quiet Straight Power 11 CM 450W Modular PSU, BN280 |
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Price: £73.94
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Streacom ST-NANO120 120W nanoPSU and AC/DC adapter block |
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Price: £59.52
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FSP Hyper M 700W Modular Quiet Power Supply |
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Price: £57.50
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FSP Hyper M 600W Modular Quiet Power Supply |
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Price: £53.33
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be quiet Pure Power 10 600W Quiet PSU, BN274 |
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Price: £52.83
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FSP Hyper S 700W Quiet Power Supply |
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Price: £49.17
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FSP Hyper M 500W Modular Quiet Power Supply |
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Price: £49.17
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FSP Hyper S 600W Quiet Power Supply |
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Price: £45.00
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Micronics Classic II AC 600W PSU, 80+ |
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Price: £40.59
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SilverStone SST-ST30SF Strider Semi-Fanless 300W SFX Power Supply |
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Price: £38.58
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be quiet Pure Power 11 400W Quiet PSU 80PLUS Gold, BN292 |
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Price: £38.42
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Micronics Classic II AC 500W PSU, 80+ |
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Price: £34.87
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be quiet Pure Power 11 300W Quiet PSU 80PLUS Bronze, BN290 |
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Price: £34.04
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Gelid Solutions Fourza - Flexible USB Docking Station For Phones and Tablets |
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 SPECIAL OFFER |
Save31% Price: £15.64
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Nanoxia CoolForce 24 Aluminium Cable Clip |
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Price: £13.12
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Nanoxia CoolForce 8 Aluminium Cable Clip |
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Price: £11.58
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Nanoxia CoolForce 6 Aluminium Cable Clip |
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Price: £10.85
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Nanoxia CoolForce 4 Aluminium Cable clip |
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Price: £10.22
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Quiet PC Molex IDE to Serial ATA Power Adapter Cable (Single) |
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Price: £2.49
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Gelid Solutions 24pin Acrylic Cable Holder |
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Price: £2.02
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Gelid Solutions 8pin Acrylic Cable Holder |
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Price: £1.71
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