10 Best SFX Computer Power Supplies for Compact PCs in 2026

Choosing a power supply for a small-form-factor PC requires more than matching wattage. Limited space, cable routing, cooling, noise, and graphics-card connector support all matter when every component has to fit cleanly.

This roundup compares 10 SFX and SFX-L options across compact gaming PCs, workstation builds, and budget-friendly Mini-ITX systems. Use the guide below to narrow your choice by power, efficiency, modern standards, and intended build.

Best 10 Sfx Computer Power Supplies Picks for 2026

Maximum SFX Headroom – Thermaltake Toughpower SFX 1000W

For demanding small-form-factor builds, this Thermaltake model delivers 1,000 watts in a compact SFX chassis. It is a strong option among SFX computer power supplies for high-end systems needing PCIe 5.1 support, an included 12V-2×6 cable, and efficient Platinum-rated operation.

Best For: High-power SFX or ATX builds with demanding graphics cards and limited installation space.

Pros:

• 1,000W output in a compact SFX form factor
• 80 Plus Platinum efficiency and fully modular low-profile cables
• Native 12V-2×6 connector with PCIe 5.1 and ATX 3.1 compatibility
• Includes an SFX-to-ATX adapter bracket and a seven-year warranty

Cons:

• Higher capacity may be unnecessary for modest systems
• Its 90mm fan is smaller than those used in some larger power supplies

The Toughpower SFX 1000W stands out when compact dimensions and substantial power capacity matter most. Its modular design, modern GPU connector, and adapter bracket make it flexible for both SFX and compatible ATX installations.

Compact Gold Value – Cooler Master V850 SFX Gold

The Cooler Master V850 SFX Gold combines 850 watts with a compact design suited to ITX and SFF systems. For shoppers comparing SFX computer power supplies, its fully modular cabling and PCIe 5.1-ready 12V-2×6 connection offer useful flexibility for current graphics cards.

Best For: Gamers, creators, and professionals building compact systems with an 850W power requirement.

Pros:

• 850W output in a mini SFX design
• Fully modular cables help reduce clutter
• PCIe 5.1-ready 12V-2×6 connector can deliver up to 600W to a GPU
• Includes a 10-year manufacturer warranty

Cons:

• Customized shorter cables may require extensions in larger cases
• Gold efficiency is below Platinum-rated alternatives in this roundup

This V850 is a practical middle ground for compact builds that need substantial power without moving to a larger PSU. Check cable reach carefully if installing it in a roomy case, but its modular design and modern connector support are well suited to ITX hardware.

Quiet Platinum Cooling – CORSAIR SF850 (2024)

The 2024 CORSAIR SF850 provides 850 watts in an SFX enclosure with Platinum efficiency and a low-noise feature set. It is a compelling choice among SFX computer power supplies for space-constrained PCs that benefit from fully modular Type-5 cabling and a 92mm PWM fan.

Best For: Small-form-factor builders prioritizing quiet operation, efficient power delivery, and tidy cable management.

Pros:

• 80 Plus Platinum-rated 850W SFX power
• Fully modular Type-5 Micro-Fit connectors save space
• 92mm fluid-dynamic-bearing PWM fan with Zero RPM mode
• Uses 105°C-rated Japanese capacitors and includes a seven-year warranty

Cons:

• Its listed ATX 3.0 and PCIe 5.0 support is not the newer ATX 3.1 specification
• 850W capacity may not suit the most demanding multi-component builds

For a compact PC where noise and cable space are important, the SF850 offers a well-balanced feature set. Its Platinum rating, zero-RPM mode, and flexible modular cables make it especially suitable for refined SFF builds.

Premium Low-Noise SFX-L – ASUS ROG Loki 750W Platinum

The ASUS ROG Loki SFX-L 750W pairs Platinum efficiency with a larger 120mm PWM fan and a low-noise Lambda A certification. For SFX computer power supplies in compatible compact cases, it adds fully modular cabling, PCIe 5.1 support, and a 12V-2×6 cable rated for up to 600W.

Best For: Premium SFX-L gaming systems where low noise, efficient operation, and long warranty coverage are priorities.

Pros:

• 80 Plus and Cybenetics Platinum certifications
• 120mm PWM fan and Lambda A noise certification below 25dB
• PCIe 5.1-compatible 16-pin cable supports up to 600W
• Includes a 10-year core product warranty and Aura Sync-compatible ARGB lighting

Cons:

• SFX-L sizing may not fit cases designed only for standard SFX units
• 750W output provides less headroom than the 850W and 1,000W options
• Its RGB feature may add little value in enclosed builds

The Loki is a premium choice for builders who want efficient, quiet power in an SFX-L format. Confirm case compatibility before buying, then consider it for systems where acoustic performance and long-term warranty support matter more than maximum wattage.

Best Balanced SFX Power Supply – Vetroo 850W ATX 3.1 Gold

For builders comparing sfx computer power supplies, the Vetroo 850SFX offers a useful balance of capacity, modern connectivity, and installation flexibility. Its 850W output, ATX 3.1 and PCIe 5.1 support, 80 Plus Gold certification, and fully modular cabling suit compact gaming and workstation builds.

Best For: Mini-ITX or small-form-factor systems that need strong GPU support and adaptable installation.

Pros:

• 850W output with ATX 3.1 and PCIe 5.1 support.
• 80 Plus Gold certification supports efficient operation.
• Fully modular cables help reduce build clutter.
• Includes an SFX-to-ATX bracket and a 10-year warranty.

Cons:

• The compact 90mm fan may not suit buyers prioritizing larger-fan cooling.
• The SFX-to-ATX bracket is needed for installation in standard ATX cases.

The Vetroo is a well-rounded choice when you want more headroom than a typical compact PSU without giving up current-generation GPU compatibility or cable-management convenience.

Highest-Capacity SFX Power Supply – LIAN LI SP1000P 1000W Platinum

The LIAN LI SP1000P stands out among sfx computer power supplies for its 1000W capacity and 80 Plus Platinum efficiency. It combines ATX 3.1 and PCIe 5.1 compliance with a 12V-2×6 cable, flexible wiring, and fanless operation at loads up to 40%.

Best For: High-performance gaming or creator systems in compact cases that need maximum SFX power capacity.

Pros:

• 1000W output provides substantial power headroom.
• 80 Plus Platinum certification delivers up to 92% efficiency.
• Fanless mode activates at loads of 40% or less for quieter operation.
• Includes flexible cables, a 12V-2×6 cable, and an SFX-to-ATX bracket.

Cons:

• Its premium Platinum design may be more capacity than modest systems require.
• The listed input-voltage range is 120V AC.

Choose this model when power capacity, efficiency, and low-load acoustics matter more than minimizing the PSU specification. Japanese 105°C capacitors and a 10-year warranty further support long-term use.

Best Compact ITX Value – Cooler Master V750 SFX Gold

The Cooler Master V750 SFX Gold is a practical option for buyers seeking sfx computer power supplies for mini-ITX and other small-form-factor systems. It provides 750W, 80 Plus Gold certification, full modularity, and ATX 3.1 connectivity with a 12V-2×6 PCIe cable.

Best For: Mini-ITX gaming builds where compact dimensions, modern GPU support, and short cables are priorities.

Pros:

• 750W output in a compact SFX design.
• Fully modular cables and customized short lengths help reduce clutter.
• ATX 3.1 and PCIe 5.1 readiness support newer graphics cards.
• Includes a 90-degree 12VHPWR PCIe connector and a 10-year warranty.

Cons:

• Short cables may require extensions in larger cases.
• Its 750W capacity offers less headroom than 850W or 1000W alternatives.

For a compact system with moderate-to-high power needs, the V750 delivers a sensible combination of output, current connector support, and cable control without moving beyond the SFX format.

Platinum Performance – Redragon PSU015 750W SFX

The Redragon PSU015 is a strong option for builders comparing sfx computer power supplies for compact gaming or workstation systems. Its 750W output, 80 Plus Platinum certification, fully modular design, and ATX 3.0 support make it suited to demanding small-form-factor builds.

Best For: High-performance SFX systems using modern, power-hungry components.

Pros:

• 80 Plus Platinum certification supports efficiency and lower operating noise.
• Zero RPM fan mode keeps the fan off until temperatures reach 60°C.
• Fully modular flat white cables help simplify cable management.
• ATX 3.0 and PCIe 5.0-ready design supports substantial power excursions.

Cons:

• The 12VHPWR cable is not included.
• Its 750W capacity may be more than necessary for basic office-focused builds.

With Japanese capacitors, multiple protection features, and a five-year warranty, this Redragon model offers a feature-rich fit for compact systems where efficiency, quiet operation, and upgrade headroom matter.

Compact Value Pick – Apevia SFX-AP500W

The Apevia SFX-AP500W is a straightforward choice among sfx computer power supplies for Mini ITX, Micro ATX, and other small-form-factor systems. Its 500W output and compact dimensions make it appropriate for modest builds with conventional power requirements.

Best For: Budget-conscious Mini ITX and Micro ATX computers with entry-level or moderate components.

Pros:

• Compact 125 x 100 x 63.5mm SFX design fits space-constrained cases.
• Includes 20+4-pin motherboard, 4+4-pin CPU, PCIe, SATA, and Molex connectors.
• Split connectors support motherboards and graphics cards requiring different plug configurations.
• 80mm auto-thermal fan provides active cooling.

Cons:

• The non-modular cable design can make cable management more difficult.
• It is specified for 115V input only.
• The warranty is limited to one year.

This Apevia model prioritizes basic compatibility and compact sizing over premium efficiency features, making it a practical fit when a simple 500W SFX supply meets the system’s needs.

Modern Standard Choice – Thermaltake Toughpower SFX 750W

The Thermaltake Toughpower SFX 750W is designed for buyers seeking modern sfx computer power supplies with current connectivity standards. It combines 80 Plus Platinum efficiency, full modularity, PCIe Gen 5.1 readiness, and ATX 3.1 compatibility in a compact SFX chassis.

Best For: Premium small-form-factor gaming PCs using current-generation graphics hardware.

Pros:

• 80 Plus Platinum certification supports efficient compact-system operation.
• Includes a 300W 12V-2×6 connector for compatible modern graphics cards.
• Fully modular low-profile cables help reduce clutter in small cases.
• Offers strict voltage regulation, low ripple noise, and a seven-year warranty.

Cons:

• Its premium features may be unnecessary for lower-power builds.
• The 750W capacity is more than modest office systems typically require.

With ATX 3.1 support, a 90mm fluid dynamic bearing fan, and a seven-year manufacturer warranty, this is a forward-looking choice for builders planning a powerful and longer-lived SFX system.

How We Picked These Sfx Computer Power Supplies

We selected models covering the most common small-form-factor needs, from compact 500W systems to high-end 1,000W gaming PCs. Our comparison emphasizes continuous wattage, SFX or SFX-L compatibility, modular cabling, efficiency certification, cooling design, noise features, and support for current ATX and PCIe standards.

Newer graphics cards can place demanding, short-duration loads on a power supply, so ATX 3.1 support and a native 12V-2×6 cable are useful advantages. Specifications can vary by region and revision, so confirm the manufacturer’s exact connector and cable details before buying.

Quick Comparison

Power range	Best suited to	What to prioritize
500W	Entry-level Mini-ITX PCs	Low cost, basic GPU support, adequate airflow
750W–850W	Mainstream gaming and creator builds	Gold or Platinum efficiency, modular cables, modern GPU connector
1,000W	High-end GPUs and powerful CPUs	ATX 3.1, 12V-2×6 support, thermal capacity, case clearance

Key Buying Factors for Sfx Computer Power Supplies

Form Factor and Clearance

Standard SFX units are typically the safest choice for compact cases designed around the format. SFX-L models may offer a larger fan or additional internal capacity, but their extra length can interfere with drive cages, radiators, or cable space. Check the case manual and account for the PSU bracket, cables, and bend radius.

Wattage and Transient Capacity

Choose wattage based on the complete system rather than the graphics card alone. A quality 750W or 850W unit suits many modern gaming builds, while 1,000W provides more headroom for high-end GPUs and power-hungry processors. Avoid choosing so close to the limit that the fan runs loudly or transient loads trigger protection.

Efficiency, Acoustics, and Cabling

80 Plus Gold is a sensible baseline; Platinum models can reduce heat and energy waste, especially in systems that run frequently. Fully modular cabling helps in cramped cases, and zero-RPM or semi-passive modes can reduce noise at light loads. Still, fan behavior depends on case ventilation and ambient temperature.

ATX 3.1 and GPU Connectors

For a new graphics card, prefer a unit with a native PCIe 5.1-ready 12V-2×6 cable when available. This can simplify installation and reduce adapter clutter. Verify the included cable rating and avoid sharply bending high-power GPU cables near the connector.

Who Should Buy Which Sfx Computer Power Supplies?

• Budget Mini-ITX builders: A reputable 500W option is appropriate for modest CPUs and entry-level or midrange graphics cards.
• Mainstream gamers: Choose a 750W–850W Gold or Platinum model with modular cables and current GPU support.
• High-end gaming and workstation users: A 1,000W ATX 3.1 unit offers useful headroom for demanding processors, graphics cards, and future upgrades.
• Noise-sensitive builders: Prioritize efficient units with a semi-passive or low-noise fan profile, then pair them with strong case airflow.
• First-time SFF builders: Confirm dimensions, included cables, mounting hardware, and case compatibility before ordering; compact builds leave little room for substitutions.