A noisy power supply can undermine an otherwise quiet PC, especially when the system is idle or handling light workloads. The best quiet computer power supplies balance fan acoustics with efficiency, stable delivery, modern connectivity, and enough headroom for your components.
This roundup covers options ranging from compact SFX-L units and budget-friendly 500W models to high-capacity ATX 3.1 supplies designed for demanding gaming hardware. Use the guide below to match wattage, connectors, efficiency, and cooling behavior to your build.
Best 10 Quiet Computer Power Supplies Picks for 2026
Best Overall
be quiet! Pure Power 13 M 750W
- Semi-passive zero-RPM cooling
- ATX 3.1 with native 12V-2x6 support
- 80 PLUS Gold and Cybenetics Platinum certified
Best For: Quiet high-end gaming and media-creation PCs
Best 850W Quiet Pick
- 850W ATX 3.1 power supply
- Native 12V-2x6 cable included
- Low-noise 120mm rifle-bearing fan
Best For: Modern gaming PCs with higher power demands
Best Silent Cooling
- Large 140mm semi-passive fan
- 80 PLUS and Cybenetics Platinum certified
- Native angled 12V-2x6 connector
Best For: Efficient builds where low fan noise is paramount
Best Compact 850W Value
- 850W fully modular design
- ATX 3.1 and PCIe 5.1 ready
- 10-year limited warranty
Best For: Compact gaming systems needing modern GPU support
Premium Quiet Power
- 80 PLUS Titanium efficiency up to 95.2%
- Silent Wings fan for virtually inaudible operation
- PCIe 5.0 support and selectable 12V rails
Best For: High-end gaming and overclocking builds
Quiet Gaming Value
- 80 PLUS Gold efficiency up to 92.7%
- Native 12V-2x6 and three PCIe 6+2-pin connectors
- Temperature-controlled 120mm quiet fan
Best For: Quiet gaming and media-creation PCs
Flexible Silent Build
- Fully modular ATX 3.1 power supply
- 135mm FDB fan with zero-RPM mode
- Native 12V-2x6 cable and 10-year warranty
Best For: Modern, cable-managed desktop builds
Reliable Value
- 500W continuous output
- 120mm cooling fan
- Five-year warranty
Best For: Budget-friendly everyday desktops
Compact Quiet Pick
- 600W SFX output
- 80 PLUS Gold efficiency
- Temperature-controlled 120mm fan
Best For: Mini ITX and compact gaming systems
Best Overall – be quiet! Pure Power 13 M 750W
For shoppers comparing quiet computer power supplies, the be quiet! Pure Power 13 M 750W combines semi-passive cooling, strong efficiency certifications, and modern GPU support. Its fully modular design also helps keep installations tidy.
Best For: High-end gaming PCs, overclocked GPUs, and quiet media-creation systems.
Pros:
- 80 PLUS Gold and Cybenetics Platinum efficiency certifications
- Zero-RPM fan operation during low loads
- Native 12V-2×6 connector and four PCIe 6+2-pin connectors
- ATX 3.1 support with capacity for substantial power excursions
Cons:
- 750W capacity may not suit the most power-hungry builds
- Its 12cm fan is smaller than the 140mm fan used by some competing models
This is a well-rounded option when quiet operation, current GPU compatibility, and flexible cabling matter more than maximum wattage.
Best 850W Quiet Pick – CORSAIR RM850e (2025) 850W
The CORSAIR RM850e (2025) is a practical choice among quiet computer power supplies when you need more headroom for a modern gaming build. Its fully modular cables and low-noise fan curve simplify both installation and everyday operation.
Best For: Modern gaming PCs needing 850W and PCIe 5.1-ready power delivery.
Pros:
- 850W output with Intel ATX 3.1 certification
- Native 12V-2×6 cable included
- 120mm rifle-bearing fan with a noise-focused curve
- Fully modular cabling and 105°C-rated capacitors
Cons:
- Lower efficiency certification than the Platinum-rated be quiet! options
- Seven-year warranty is shorter than the 10-year warranties listed for several alternatives
Choose the RM850e when 850W capacity and straightforward next-generation GPU support are priorities, while keeping fan noise controlled under demanding loads.
Best Silent Cooling – be quiet! Power Zone 2 750W
The be quiet! Power Zone 2 750W stands out among quiet computer power supplies with its large 140mm fan and semi-passive zero-RPM mode. Platinum efficiency and a native 12V-2×6 connector make it a strong fit for efficient, current-generation systems.
Best For: Builders who prioritize especially quiet cooling and efficient 750W performance.
Pros:
- 80 PLUS Platinum and Cybenetics Platinum certified
- Large 140mm Pure Wings 3 fan for quiet cooling
- Zero-RPM operation at low load with post-ventilation
- ATX 3.1 support and native angled 12V-2×6 connector
Cons:
- 750W capacity may be limiting for extreme GPU configurations
- Its post-ventilation cooldown can run for two to five minutes
Power Zone 2 is the specialist pick for a quiet, efficient build, particularly if you value a larger fan and Platinum-level efficiency over additional wattage.
Best Compact 850W Value – MSI MAG A850GL PCIE5 850W
The MSI MAG A850GL PCIE5 offers 850W, fully modular cabling, and current ATX 3.1 and PCIe 5.1 support for gaming systems. It is worth considering among quiet computer power supplies when a compact design and long warranty are important, although the supplied specifications do not identify a zero-RPM or specific low-noise mode.
Best For: Compact gaming builds that need 850W and modern GPU connectivity.
Pros:
- 850W output with 80 PLUS Gold certification
- Fully modular design
- ATX 3.1 and PCIe 5.1 ready with a native dual-color 12V-2×6 cable
- 10-year limited manufacturer warranty
Cons:
- Supplied notes do not specify a semi-passive or zero-RPM fan mode
- Fan details list two 12cm fans, without a stated noise rating or fan curve
This MSI model makes the most sense for buyers seeking modern standards, 850W capacity, and a long warranty in a compact fully modular gaming PSU, rather than a specifically documented silent-running design.
Premium Quiet Power – Dark Power 13 1000W
The be quiet! Dark Power 13 1000W is a high-capacity option for shoppers seeking quiet computer power supplies for demanding gaming or workstation builds. Its 80 PLUS Titanium efficiency, Silent Wings fan, and flexible 12V configuration support powerful, low-noise systems.
Best For: High-end gaming PCs, workstations, and overclocking-focused builds requiring 1000W.
Pros:
- 80 PLUS Titanium efficiency rated up to 95.2%.
- ATX 3.0 design with PCIe 5.0 and 6+2-pin GPU support.
- Frameless Silent Wings fan and funnel-shaped mesh inlet promote quiet airflow.
- Overclocking key switches between four 12V rails and one large rail.
Cons:
- Its 1000W capacity may be more than a mainstream PC needs.
- It uses a single 135mm fan, so airflow still depends on system load and case ventilation.
Choose the Dark Power 13 when efficiency, headroom, and acoustic performance matter more than minimizing the PSU budget. The 10-year warranty and premium components further suit long-term builds.
Quiet Gaming Value – Pure Power 12 850W
The be quiet! Pure Power 12 850W is a practical choice among quiet computer power supplies for gaming and media-creation PCs. Its 80 PLUS Gold efficiency, temperature-controlled 120mm fan, and native 12V-2×6 connector balance modern compatibility with quiet operation.
Best For: Quiet gaming PCs and media-creation systems using current or next-generation GPUs.
Pros:
- 80 PLUS Gold efficiency rated up to 92.7%.
- ATX 3.1 support with native 12V-2×6 and three PCIe 6+2-pin connectors.
- Temperature-controlled 120mm fan with airflow-optimized blades reduces turbulence.
- 850W single 12V rail handles power excursions up to twice its rated output.
Cons:
- The listed design is non-modular, which can make cable management less flexible.
- Gold efficiency is below the Titanium rating of premium alternatives.
For most powerful gaming systems, this model offers a sensible mix of capacity, modern GPU support, efficiency, and acoustics. Its single-rail design and 10-year warranty add practical long-term appeal.
Flexible Silent Build – MONTECH Century II 850W
The MONTECH Century II 850W is a strong contender for buyers comparing quiet computer power supplies with modern graphics-card support. It combines ATX 3.1 and PCIe 5.1 readiness with a fully modular design, a 135mm FDB fan, and zero-RPM mode.
Best For: Modern desktop builds prioritizing modular cabling and low-noise operation.
Pros:
- ATX 3.1 and PCIe 5.1 ready with a native 12V-2×6 cable.
- 135mm FDB fan includes zero-RPM mode for lighter-load silence.
- Fully modular design simplifies cable selection and routing.
- 100% Japanese capacitors, multiple protections, and a 10-year warranty.
Cons:
- Its 80 PLUS Gold rating is less efficient than Titanium-class units.
- The supplied details do not specify a noise rating beyond the silent-fan and zero-RPM features.
This Century II model is appealing when clean cable management and newer GPU connectivity are priorities. Zero-RPM operation can keep everyday systems especially quiet, while 850W provides substantial capacity for many current builds.
Reliable Value – Thermaltake Smart 500W
The Thermaltake Smart 500W is a practical entry-level option for builds that need dependable power without an elaborate feature set. Its 120mm cooling fan is designed for quiet operation, making it a sensible choice when comparing quiet computer power supplies for everyday desktops.
Best For: Budget-friendly office, home, and moderate-use desktop PCs.
Pros:
- 500W continuous output with a powerful +12V rail.
- 80 PLUS certification and active power factor correction.
- Includes two PCIe 6+2-pin connectors and a five-year warranty.
- Built-in over-power, over-voltage, and short-circuit protection.
Cons:
- Non-modular design can make cable management less flexible.
- 80 PLUS White efficiency is more basic than Gold-rated alternatives.
This PSU focuses on essential capacity, protections, and straightforward compatibility. It is a reasonable fit for a simple system, but higher-powered gaming builds may benefit from a more efficient or modular model.
Compact Quiet Pick – be quiet! SFX L 600W
The be quiet! SFX L 600W is built for Mini ITX PCs and compact gaming systems. Its temperature-controlled 120mm fan, Gold efficiency, and modular cables make it a strong candidate among quiet computer power supplies for space-constrained builds.
Best For: Mini ITX systems and compact gaming PCs needing SFX power.
Pros:
- 80 PLUS Gold certification with efficiency up to 92%.
- Temperature-controlled 120mm fan supports quieter operation.
- Modular cables help simplify installation and cable management.
- Four PCIe connectors support multi-GPU configurations.
Cons:
- The SFX form factor is intended for compatible compact cases.
- Its three-year warranty is shorter than some competing models.
With an included SFX-to-ATX adapter bracket, this unit can also work in larger cases that support the format. Confirm case clearance and connector requirements before buying.
High-Power Silence – Thermaltake GF1 850W
The Thermaltake GF1 850W combines substantial capacity with features aimed at reducing unwanted fan noise. Its Smart Zero Fan, ultra-quiet 140mm fluid-bearing fan, and fully modular design make it a compelling option when shopping for quiet computer power supplies for demanding systems.
Best For: Higher-power gaming and performance desktops that need 850W capacity.
Pros:
- 850W output with a high-amperage single +12V rail.
- Smart Zero Fan helps minimize undesired noise.
- 80 PLUS Gold certification and a 140mm fluid-bearing fan.
- Fully modular cabling and a 10-year manufacturer warranty.
Cons:
- Its ATX size and 850W capacity may be excessive for basic PCs.
- Full modularity can add cost compared with simpler power supplies.
This is the most capable option in the group for systems with higher power demands. Its zero-RPM feature and large fan prioritize quieter operation, while the modular design keeps unused cables out of the build.
How We Picked These Quiet Computer Power Supplies
We selected these models for their combination of acoustic-focused cooling, efficiency ratings, usable capacity, build compatibility, and current connectivity. The list includes fully modular and fixed-cable designs, standard ATX and SFX-L formats, and capacities from 500W to 1000W.
We also prioritized supplies with features that matter in modern systems, including ATX 3.1 support, PCIe 5.0 or 5.1 compatibility, native high-power GPU cables, zero-RPM or semi-passive fan modes, and reputable efficiency certifications. Fan noise varies with load, temperature, case airflow, and the rest of the system, so treat “quiet” ratings as a design goal rather than a guarantee of silence in every PC.
Quick Comparison
| Best For | Recommended Capacity | Useful Features |
|---|---|---|
| Entry-level or office PCs | 500W | Low cost, basic efficiency, standard ATX size |
| Compact gaming systems | 600W SFX-L | Small form factor, modular cabling, quiet operation |
| Mainstream gaming builds | 750W–850W | 80 Plus Gold, modular cables, modern GPU support |
| High-end graphics cards | 850W–1000W | ATX 3.1, PCIe 5.x, higher transient headroom |
Key Buying Factors for Quiet Computer Power Supplies
Wattage and Headroom
Choose capacity based on the complete system, not just the graphics card. A quality 750W unit suits many mainstream gaming PCs, while 850W is a flexible choice for higher-performance GPUs and future upgrades. A 1000W model makes sense for power-hungry processors, flagship graphics cards, or heavily upgraded workstations. Avoid oversizing dramatically, because efficiency and fan behavior depend partly on operating load.
Fan Control and Acoustics
Look for large, temperature-controlled fans, semi-passive operation, or zero-RPM modes if low idle noise is important. A quiet PSU cannot compensate for poor case ventilation, so maintain clear intake and exhaust paths and avoid placing the computer in an enclosed cabinet.
Efficiency and Modern Connectors
80 Plus Gold and higher ratings can reduce wasted power and heat compared with basic units. For a new gaming build, ATX 3.1 support and a native PCIe 5.0 or 5.1 GPU connector can simplify installation and improve compatibility with newer graphics cards. Confirm the exact cable standard rather than relying only on a product’s wattage.
Size, Modularity, and Protection
Check whether your case accepts standard ATX or SFX-L dimensions. Fully modular cabling helps airflow and makes compact builds easier to route, while fixed or partially modular designs may offer better value. Also verify protections such as over-voltage, over-current, over-temperature, short-circuit, and over-power protection.
Who Should Buy Which Quiet Computer Power Supplies?
Choose the 500W Thermaltake option for a basic office, media, or entry-level PC where price matters more than next-generation GPU support. For a mini-ITX or compact gaming system, the 600W SFX-L model is the natural fit, provided your case supports that format.
For most mainstream gaming PCs, a 750W or 850W Gold-rated unit offers the best balance of capacity, efficiency, cable flexibility, and noise control. Favor an ATX 3.1 model when pairing the supply with a current-generation graphics card. Enthusiasts running especially demanding CPUs and GPUs should consider the 1000W Titanium option for additional transient headroom and efficient high-load operation.