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3,252 reviews at Trustpilot.3,252 reviews

Ultra-Quiet PSUs 600W or lower

This range of power supplies are ideal for systems that do not consume a large amount of power. Systems that are designed for word processing, internet browsing and/or general desktop work will benefit from a PSU within this range. These PSUs will also be able to power a gaming PC that does not have a high-end graphics card.

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Streacom ST-ZF240 ZeroFlex 240W Passive PSU for Streacom Chassis

178 in stock
ST-ZF240 ZeroFlex 240W Passive PSU for Streacom Chassis
  • Totally passive 240W PSU
  • Installed inside the chassis
  • Designed for Streacom FC5, FC9 and FC10 chassis
  • 93% efficiency
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£145.08
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Streacom ST-NANO160 160W nanoPSU and AC/DC adapter block

209 in stock
ST-NANO160 160W nanoPSU and AC/DC adapter block
  • Very small, can built into ultra-compact PC enclosures and slim server enclosures
  • Fits any motherboard equipped with 24pin ATX connector
  • 100% silent, fanless, no moving parts
  • Highly efficient design, does not produce a lot of heat
  • Ideal for Intel processors as VIA C7/nano or AMD motherboards
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£109.42
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be quiet Straight Power 11 CM 550W Modular PSU, BN281

2 in stock
Straight Power 11 CM 550W Modular PSU, BN281
  • Virtually inaudible operation
  • Very quiet SilentWings 3 fan
  • 80PLUS Gold certification
  • Fully Modular cable management
  • NVIDIA SLI Ready and AMD CrossFireX
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£97.62
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be quiet Straight Power 11 CM 450W Modular PSU, BN280

5 in stock
Straight Power 11 CM 450W Modular PSU, BN280
  • Virtually inaudible operation
  • Very quiet SilentWings 3 fan
  • 80PLUS Gold certification
  • Fully Modular cable management
  • NVIDIA SLI Ready and AMD CrossFireX
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£89.06
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Streacom ST-NANO120 120W nanoPSU and AC/DC adapter block

10 in stock
ST-NANO120 120W nanoPSU and AC/DC adapter block
  • Very small, can built into ultra-compact PC enclosures and slim server enclosures
  • Fits any motherboard equipped with 24pin ATX connector
  • 100% silent, fanless, no moving parts
  • Highly efficient design, does not produce a lot of heat
  • Ideal for Intel processors as VIA C7/nano or AMD motherboards
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£71.42
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FSP Hyper M 600W Modular Quiet Power Supply

19 in stock
Hyper M 600W Modular Quiet Power Supply
  • Excellent value for money modular PSU
  • Meets 85% efficiency
  • Complies with ATX 12V v2.4
  • 6pin+2 PCI-Express graphic card connector ready
  • Quiet, 120mm Fan, less than 19dBA @ 50% load
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£64.00
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FSP Hyper M 500W Modular Quiet Power Supply

21 in stock
Hyper M 500W Modular Quiet Power Supply
  • Excellent value for money modular PSU
  • Meets 85% efficiency
  • Complies with ATX 12V v2.4
  • 6pin+2 PCI-Express graphic card connector ready
  • Quiet, 120mm Fan, less than 19dBA @ 50% load
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£59.00
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FSP Hyper S 600W Quiet Power Supply

27 in stock
Hyper S 600W Quiet Power Supply
  • Excellent value for money PSU from FSP
  • Meets 85% efficiency
  • Complies with ATX 12V v2.4
  • 6pin+2 PCI-Express graphic card connector ready
  • Quiet, 120mm Fan, less than 19dBA
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£54.00
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FSP Hyper S 500W Quiet Power Supply

22 in stock
Hyper S 500W Quiet Power Supply
  • Excellent value for money PSU from FSP
  • Meets 85% efficiency
  • Complies with ATX 12V v2.4
  • 6pin+2 PCI-Express graphic card connector ready
  • Quiet, 120mm Fan, less than 19dBA
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£49.00
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be quiet Pure Power 11 400W Quiet PSU 80PLUS Gold, BN292

3 in stock
Pure Power 11 400W Quiet PSU 80PLUS Gold, BN292
  • 12V-rails ensure rock-solid voltage stability for powerful multi-GPU systems
  • 80PLUS certification and up to 91% power conversion efficiency
  • Exceptionally quiet operation features a silence-optimised 120mm be quiet fan
  • Stable operation thanks to DC-to-DC power conversion technology
  • Attractively sleeved cables simplify component installation
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£48.97
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Micronics Classic II AC 600W PSU, 80+

22 in stock
Classic II AC 600W PSU, 80+
  • Available in 500W, 600W and 700W
  • Less than 1W standby power consumption
  • High efficiency 80PLUS certified
  • Flat ribbon cabling
  • Features “After Cooling"
  • Ultra-quiet 120mm fan
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£48.71
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SilverStone SST-ST30SF Strider Semi-Fanless 300W SFX Power Supply

Only 1 left in stock, 3 more on order
SST-ST30SF Strider Semi-Fanless 300W SFX Power Supply
  • Intelligent semi-fanless operation
  • Support standard SFX form factor and ATX via included bracket
  • 80 PLUS Bronze level efficiency
  • Very quiet 80mm fan with 18dBA minimum
  • Single PCI-E 6pin connector support
  • Active PFC
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£46.30
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be quiet Pure Power 11 300W Quiet PSU 80PLUS Bronze, BN290

3 in stock
Pure Power 11 300W Quiet PSU 80PLUS Bronze, BN290
  • 12V-rails ensure rock-solid voltage stability for powerful multi-GPU systems
  • 80PLUS certification and up to 91% power conversion efficiency
  • Exceptionally quiet operation features a silence-optimised 120mm be quiet fan
  • Stable operation thanks to DC-to-DC power conversion technology
  • Attractively sleeved cables simplify component installation
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£42.43
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“Beautifully built and very, very quiet.”

“A beautifully built and very, very quiet pc from the Zen masters of the art of quiet computers. This is my second build from Quiet PC and I can’t recommend their computers highly enough in terms of both quality and quietness. I’d also like to thank Andy and Paul for their very friendly and knowledgeable technical support. Andy especially and unselfishly saved me a bit of cash..so thanks a lot Andy.”

20th June 2019 via Trustpilot