10 Best SFX Power Supplies (November 2026)

SFX power supplies are essential for builders who want high performance in a compact chassis. These units deliver reliable power to demanding components while fitting into mini-ITX and micro-ATX cases that save space without sacrificing capability.

We compared ten leading models based on efficiency ratings, modularity, cable management, and compatibility with the latest graphics cards. Each product was evaluated for build quality, noise levels, and support for modern standards like ATX 3.0 and PCIe 5.0.

Every pick in this guide highlights specific strengths for different needs and budgets. While the options vary from entry-level to premium, all selected units meet strict safety and performance criteria. Prices and availability change frequently so check current listings before purchasing.

Top 3 Picks for Best SFX Power Supplies

Top 10 Best SFX Power Supplies in 2026 Compared

This side-by-side comparison highlights the key specifications and unique features of each unit to help you identify the best fit for your specific build requirements.

1. Cooler Master V850 SFX Gold – Best Overall SFX Power Supply

4.4Editor scoreCheck price on Amazon

Cooler Master V850 SFX Gold

850 Watts power output

ATX 3.1 compliant

Fully modular cable design

90 degree durable cables

The Cooler Master V850 SFX Gold stands out as a top choice for builders seeking a balance of power and size. Its rating reflects strong performance in real-world tests where it delivers stable power to high-end components.

Pros

• Advanced ATX 3.1 support
• Excellent cable management
• Efficient cooling solution
• Compact ITX design
• Strong build quality

Cons

• May need extended cables
• Higher price point

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Key strengths include its native ATX 3.1 compliance and the innovative 90 degree 12VHPWR connector. This design improves electrical durability and safety while making cable routing significantly easier in tight chassis.

Trade-offs are minimal though extended cables might be necessary for larger cases due to the optimized length. The price is premium but justified by the cutting edge features and reliable performance.

Gamers and creators building mini-ITX systems should choose this unit for its future proof readiness. It offers the power headroom needed for the latest GPUs without compromising on space efficiency.

Next Gen Power Standards

This PSU fully supports ATX 3.1 and PCIe 5.1 standards delivering up to 600W to your GPU without needing external adapters.

Enhanced Thermal Dissipation

The integrated design of the transformer and rectifier ensures top performance and cooling even under heavy loads.

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2. CORSAIR SF850 2024 – Best Compact Platinum PSU

4.2Editor scoreCheck price on Amazon

CORSAIR SF850 2024

850 Watts power output

80 PLUS Platinum rated

Type-5 Micro-Fit connectors

92mm PWM cooling fan

This 2024 model from Corsair brings massive platinum rated power to a compact SFX form factor. It is ideal for those who want space saving in larger cases or power density for small form factor PCs.

Pros

• Platinum efficiency rating
• Fully modular cables
• ATX 3.0 compliant
• Low noise operation
• Reliable capacitors

Cons

• Higher cost than gold units
• Non-Standard connectors

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The fully modular design uses Type-5 Micro-Fit connectors which offer flexible cabling for tidy management. This reduces clutter significantly compared to fixed cable units making it easier to build in tight spaces.

While the price is on the higher side the reliability is backed by 105 degree Celsius rated Japanese capacitors. The 92mm PWM fan ensures powerful cooling with low noise operation thanks to its fluid dynamic bearing.

Builders who prioritize quiet operation and efficiency should consider this unit. It provides excellent support for the PCIe Gen 5 platform and resists transient power spikes effectively.

Superior Efficiency

The 80 PLUS Platinum rating ensures efficient power conversion which reduces heat and noise while increasing overall reliability.

Advanced Cable Management

With flexible cabling and Type-5 connectors this unit takes up less space for tidy cable management in small cases.

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3. CORSAIR SF850 2024 Renewed – Best Value Certified Refurbished

5.0Editor scoreCheck price on Amazon

CORSAIR SF850 2024 Renewed

850 Watts power output

80 PLUS Platinum rated

Includes SFX to ATX bracket

Low noise operation

This renewed option offers the same massive platinum rated power in a compact SFX form factor as the new model. It is perfect for power-dense small form factor PCs or saving space in larger cases.

Pros

• Renewed high ratings
• Platinum efficiency rating
• Fully modular cables
• Includes expansion bracket
• Cost effective option

Cons

• Renewed condition only
• Limited warranty compared to new

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The unit is compliant with the ATX 3.0 power standard from Intel supporting the PCIe Gen 5 platform and resisting transient power spikes. Its fully modular design allows for flexible cabling taking up less space.

The cooling system features a 92mm PWM fan that delivers powerful cooling with low-noise operation thanks to a fluid dynamic bearing. Inside are 105 degree Celsius rated Japanese capacitors for unwavering power and reliability.

Those looking to save on budget without sacrificing quality should choose this renewed unit. It comes with an included SFX to ATX bracket making it versatile for different build types.

Renewed Quality Assurance

This renewed product is tested to ensure it meets the same standards as a new unit providing reliability at a lower cost.

Versatile Form Factor

The included SFX to ATX bracket allows you to use this PSU in larger cases if needed expanding its utility.

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4. ASUS ROG Loki SFX-L 1000W – Best Premium High Wattage

4.4Editor scoreCheck price on Amazon

ASUS ROG Loki SFX-L 1000W

1000 Watts power output

80 PLUS Platinum rated

120mm PWM ARGB fan

10 year warranty

The ASUS ROG Loki SFX-L delivers massive power with a 1000W capacity and platinum certification. It features ROG heatsinks that cover critical components to lower temps for a longer lifespan and reduced noise.

Pros

• 1000 Watts capacity
• 120mm fan size
• ROG Aura Sync support
• Extended warranty coverage
• Low thermal output

Cons

• Larger SFX-L dimensions
• Premium pricing

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Axial-tech cooling uses a 120mm fan with PWM control to keep thermals in check while maintaining low noise levels. The ATX 3.0 compatibility includes a 16-pin PCIe cable that can pipe up to 600W of power to PCIe Gen 5.0 graphics cards.

While it comes at a higher price point the 10 year warranty provides peace of mind for long-term users. The Aura Sync compatibility allows you to synchronize lighting effects across your gaming setup easily.

High-end gamers and workstation users who need maximum power headroom should choose this unit. Its combination of size efficiency and premium features makes it a standout choice for enthusiast builds.

Advanced Cooling Technology

ROG heatsinks cover critical components ensuring lower temperatures that result in a longer lifespan and reduced noise during operation.

Powerful Connectivity

Compliant with ATX 3.0 guidelines it is bundled with a 16-pin PCIe cable capable of delivering up to 600W to your GPU.

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5. Vetroo 850W Black SFX – Best Budget Modern PSU

4.6Editor scoreCheck price on Amazon

Vetroo 850W Black SFX

850 Watts power output

80 Plus Gold certified

Full modular design

ATX 3.1 ready

The Vetroo 850W Black SFX is an attractive option for builders who want modern features without the premium price tag. It is designed for mini ITX chassis but can be expanded to ATX size when using the included bracket.

Pros

• Supports PCIe Gen 5.1
• Full modular cabling
• Affordable price point
• Gold efficiency rating
• Compatible sizes

Cons

• Entry level build
• Basic warranty

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This unit supports the latest PCIE 5.1 for improved performance and efficiency while remaining backward compatible with PCIE 4.0 and 3.0. The ATX 3.1 ready status ensures it meets the latest and most advanced power supply standards on the market.

With an 80 Plus Gold Certification it complies with the highest standards of quality and efficiency to ensure reliable performance and energy savings. The full modular design allows cables to be easily managed by installing only what you need.

Casual builders or those on a strict budget will find this unit meets all essential needs. It reduces clutter and offers the reliability required for modern gaming rigs at an accessible price.

Future Ready Standards

The latest ATX 3.1 ready technology makes this unit perfect for any PC builder or gamer planning a new system.

Compact Versatility

Compatible sizes mean SFX fits mini ITX and can expand to ATX size when using the SFX to ATX bracket for flexibility.

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6. ASUS ROG Loki SFX-L 750W – Best Silent SFX Power Supply

4.5Editor scoreCheck price on Amazon

ASUS ROG Loki SFX-L 750W

750 Watts power output

80 PLUS Platinum rated

Lambda A certified

120mm ARGB fan

This 750W variant of the ROG Loki shares the same high-end features but is optimized for slightly lower power demands. The ROG heatsinks cover critical components ensuring lower temps for a longer lifespan and reduced noise during operation.

Pros

• Certified low noise
• 120mm ARGB fan
• ROG Aura Sync
• 10 year warranty
• Low temp operation

Cons

• Smaller wattage than 1000W
• Higher cost

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Axial-tech cooling with a 120mm fan and PWM control keeps thermals in check. It is Lambda A certified for low noise levels below 25 dB making it one of the quietest SFX options available for silent builds.

The ATX 3.0 compatible design includes a 16-pin PCIe cable that can pipe up to 600W of power to PCIe Gen 5.0 graphics cards. Aura Sync compatibility allows lighting effects to be synchronized across your gaming setup seamlessly.

If silence and aesthetics are priorities this unit delivers with its low decibel rating and RGB features. It is a robust choice for those who want premium performance without compromising on noise levels.

Ultra Quiet Operation

Lambda A Certification ensures certified low noise levels below 25 dB making this a top choice for quiet home setups.

Robust Build Quality

ROG heatsinks cover critical components to lower temps result in a longer lifespan and reduced noise over time.

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7. Thermaltake Toughpower SFX 1000W – Best High Wattage SFX

4.1Editor scoreCheck price on Amazon

Thermaltake Toughpower SFX 1000W

1000 Watts power output

80 PLUS Platinum rated

Native 12V-2×6 connector

90mm FDB fan

The Thermaltake Toughpower SFX offers limitless performance in a compact SFX form factor. It is designed to deliver massive power without the bulk of a standard ATX unit making it perfect for tight builds.

Pros

• 1000 Watts output
• Platinum efficiency
• Includes SFX to ATX bracket
• Native PCIe connector
• Low ripple noise

Cons

• Smaller fan size
• Less than ideal cables

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It is PCIe Gen 5.1 ready and fully compatible with ATX 3.1 standards. The native 12V-2×6 connector allows for direct connection to the latest graphics cards without needing adapters. The unit is also 80Plus Platinum certified with fully modular low-profile cables.

Technical specs include less than 30mV low ripple noise and extremely strict voltage regulation. The 7 year warranty provides solid support and the SFX to ATX adapter bracket is included for larger builds.

High-end builders who need power density will find this unit very capable. The low ripple noise ensures stability for sensitive components while the modular design helps manage cables in a small case.

Next Gen Power Delivery

PCIe Gen 5.1 ready and fully compatible with ATX 3.1 standards offering a native 12V-2×6 connector.

Ultra Stable Power

Less than 30mV low ripple noise and extremely strict voltage regulation ensures stable performance.

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8. Apevia SFX-AP500W – Best Entry Level SFX

4.1Editor scoreCheck price on Amazon

Apevia SFX-AP500W

500 Watts power output

Non-modular cables

Compact dimensions

Split connectors

The Apevia SFX-AP500W is a compact power solution designed for Mini ITX and Micro ATX systems. It offers a comprehensive set of connector options including a 20+4pin main power and multiple PCIe and SATA connectors.

Pros

• Very affordable price
• Compact dimensions
• Versatile connectors
• Simple design
• Split CPU power

Cons

• Non-modular design
• Basic cable management

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Its space-saving dimensions measure 125mm x 100mm x 63.5mm which fits perfectly into small form factor builds. The 8pin CPU connector can be split apart to become a 4+4 for motherboards that require a 4pin power connection.

Additionally the 8pin PCI-E GPU connector can be split apart to become a 6+2 by pushing one end down and the other up for graphics cards that require a 6pin power. This flexibility adds significant value for budget builds.

Entry level users looking for a reliable basic unit will appreciate this affordable option. While it lacks modularity the split connectors help manage cables and ensure compatibility with various hardware.

Versatile Compatibility

Includes 1 x 20+4pin Main Power and flexible CPU power connection options for various motherboards.

Compact Build

Measures 125mm x 100mm x 63.5mm designed specifically for small form factor builds to save space.

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9. APEVIA SFX-AP400W – Best Basic Budget SFX

3.9Editor scoreCheck price on Amazon

APEVIA SFX-AP400W

400 Watts power output

Non-modular cables

Sleeved cables

80mm fan

This 400W unit is designed for low power builds and is compatible with Mini ITX Micro ATX and SFX form factors. It features a 80mm automatically thermal sensing fan that provides basic cooling while all cables are sleeved.

Pros

• Low price
• Basic connector set
• Sleeved cables
• 80mm cooling fan
• Small dimensions

Cons

• Low wattage
• Basic components

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The connector set includes a 20+4pin main power 4pin 12V 6/8pin PCIe and various SATA and molex options. It provides essential connections for entry level hardware without extra features found in premium units.

The dimensions are 125mm x 100mm x 63.5mm fitting comfortably into compact chassis. It offers a 12V output of 28A which is sufficient for integrated graphics or low power discrete GPUs.

Those with minimal power needs or tight budgets can consider this unit for basic builds. It provides a simple reliable solution for office PCs or basic home media centers in small cases.

Basic Cooling

1 x 80mm Automatically Thermal Sensing Fan provides essential cooling for the unit in small builds.

Cable Quality

All Cables are Sleeved which helps with basic aesthetic management even on a budget unit.

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10. Cooler Master V750 SFX Gold – Best Mid-Range SFX

4.4Editor scoreCheck price on Amazon

Cooler Master V750 SFX Gold

750 Watts power output

ATX 3.1 compliant

Fully modular cables

90 degree connectors

The Cooler Master V750 SFX Gold delivers high-performance power in a mini design perfect sized for mini-ITX builds. It is the leading SFX PSU in its class with a powerful yet compact design.

Pros

• 750 Watts power
• ATX 3.1 ready
• 90 degree cables
• Mighty ITX design
• Enhanced cooling

Cons

• Short cables
• Standard warranty

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It features 90 degree durable cables and an ATX 3.1 compatible connector that delivers up to 450W power to your GPU. The enhanced dissipation design ensures top performance and cooling for demanding components.

Customized short cables reduce clutter in tight cases though extended cables may be needed for larger cases. This optimization helps with airflow and cable management in mini-ITX chassis.

Mid-range builders looking for reliability and efficiency will appreciate this unit. It offers the modern ATX 3.1 features and robust cooling in a size that maximizes space efficiency.

Advanced Cable Design

Featuring a 90 degree 12VHPWR PCIe 5.1 connector for improved electrical durability and safety.

Enhanced Cooling

Integrated design of the transformer and rectifier ensures top performance and cooling under load.

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Buying Guide – How to Choose the Best SFX Power Supply

Selecting the right SFX power supply involves considering several technical factors to ensure your build is reliable efficient and ready for future components.

Wattage Requirements

Determine the total power draw of your components by adding up the GPU and CPU requirements plus a safety margin. For modern gaming rigs a minimum of 750W is often recommended to handle transient spikes.

Always choose a PSU with enough headroom to keep it running in its peak efficiency range without being overloaded.

Efficiency Ratings

Look for units with 80 Plus Gold or Platinum certification to ensure efficient power conversion and less wasted heat. Higher efficiency ratings often correlate with better internal component quality.

Select a rating that balances performance and cost for your specific needs and budget constraints.

Form Factor and Size

Ensure the unit fits your case specifications such as SFX or SFX-L. SFX units are smaller and require specific mounts or adapters for standard ATX cases.

Check the case manual for supported PSU dimensions to avoid fitment issues during assembly.

Cable Management

Fully modular units allow you to use only the cables you need which significantly reduces clutter in tight cases. Semi-modular options usually keep essential cables fixed.

Choose a unit with flexible and short cables to optimize airflow and ease of routing in compact builds.

Modern Standards

New units support ATX 3.0 or 3.1 standards which are designed to handle transient power spikes from high-end graphics cards. These units also provide native 12VHPWR connectors.

Prioritize these standards if you plan to use the latest PCIe Gen 5 graphics cards for future-proofing your build.

Cooling and Noise

A quality fan with fluid dynamic bearings offers longer life and quieter operation compared to sleeve bearing fans. Larger fans generally run at lower RPMs for the same airflow.

Look for units with good noise ratings and PWM fan control for quieter performance under low load.

Warranty and Reliability

A longer warranty period typically reflects the manufacturer's confidence in the unit's longevity and quality. Premium models often come with 10 year warranties while budget ones may have 3 to 5 years.

Always check warranty terms and support options to ensure peace of mind for your investment.

Connector Types

Ensure the unit has the necessary connectors for your motherboard CPU and graphics card. ATX 3.0 units often include 12VHPWR or 12V-2×6 connectors.

Confirm connector counts match your component requirements to avoid needing adapters that can introduce safety risks.

How to Use and Care for Your SFX Power Supply

Install the PSU in the designated area of your case ensuring screws are tightened securely to prevent vibration and movement. Proper mounting ensures good contact with the case for heat dissipation.

Route cables carefully to avoid pinching or bending them sharply which can damage internal wires over time. Use cable ties to keep the path clean and avoid blocking air intake vents.

Keep the internal and external vents clean from dust buildup using compressed air every few months. Dust accumulation can cause overheating and reduce the overall lifespan of the unit.

Frequently Asked Questions

Final Thoughts on Choosing the Best SFX Power Supply