6 Best Alternatives to the Apevia PS-SFX500W 500W SFX Power (2026)

Comparing Apevia PS-SFX500W to Alternatives

SilverStone 700W SFX 80 Plus Gold Power Supply

The SilverStone SST-SX700-G delivers 700 watts, providing 200 watts more continuous output than the Apevia PS-SFX500W. It introduces an 80 Plus Gold efficiency rating and a fully modular cable layout. Fully modular cables let you attach only the leads your components require, clearing valuable airflow space inside tight small-form-factor enclosures where Apevia's fixed wiring cluster sits permanently. Both units share identical dimensions at 4.92 inches long, 3.94 inches wide, and 2.5 inches high. You give up the simple plug-and-run setup of hardwired cables, and this unit weighs 3.09 pounds. Choose this SilverStone model if your build runs higher-demand hardware requiring extra wattage headroom and cleaner internal cable management.

SilverStone 450W SFX Bronze Power Supply

The SilverStone SST-ST45SF-V3-USA adds an official 80 Plus Bronze efficiency rating and ATX case compatibility that the Apevia unit lacks. However, you give up 50 watts of overall capacity, dropping continuous output from 500 watts down to 450 watts. The published dimensions for this model measure 9 inches long, 7 inches wide, and 4 inches high, which is substantially larger than Apevia's compact 4.92 by 3.94 by 2.5-inch chassis. That larger footprint requires you to verify case clearances carefully before purchasing. You should pick this SilverStone power supply if you want verified Bronze efficiency and ATX bracket support for modest low-draw builds that do not need 500 watts.

SilverStone 700W Platinum SFX-L Power Supply

The SilverStone SST-SX700-LPT provides 700 watts of power, fully modular cabling, and a larger 120mm cooling fan. In contrast, the Apevia PS-SFX500W provides 500 watts with fixed wiring. What you sacrifice is compact clearance. This SFX-L power supply measures 5.12 inches long, 4.92 inches wide, and 2.5 inches high, making it 0.2 inches longer and nearly an inch wider than the Apevia. It also weighs 5.07 pounds. That extra depth can crowd cable routing in standard SFX cases. Pick this SilverStone option if your chassis has the clearance to accommodate a longer SFX-L chassis and you prioritize 200 additional watts alongside 120mm fan cooling.

SilverStone 300W SFX Bronze Power Supply

The SilverStone SST-ST30SF V2 introduces an 80 Plus Bronze efficiency rating, a dedicated 92mm fan, and an included ATX mounting bracket. In exchange, you give up significant headroom, dropping from Apevia's 500-watt capacity down to 300 watts. While the Apevia supplies dedicated split connectors for 6/8-pin graphics cards across 500 watts, this 300-watt supply cannot handle dedicated high-draw GPUs. Its dimensions measure 3.94 inches long, 4.92 inches wide, and 2.5 inches high. You should choose this unit over the Apevia if you are assembling a low-draw home server, office PC, or 24/7 continuous system where verified Bronze efficiency matters more than raw wattage.

SilverStone 700W Platinum SFX Power Supply

The SilverStone SX700-PT upgrades your build to 700 watts of continuous delivery alongside an 80 Plus Platinum efficiency rating and Japanese capacitors. The Apevia PS-SFX500W offers 500 watts with fixed wiring and no listed 80 Plus certification. The SX700-PT measures 3.94 inches long, 4.92 inches wide, and 2.5 inches high while weighing 4.59 pounds. You sacrifice the straightforward, low-complexity nature of Apevia's budget layout, and you take on a heavier power unit. Choose this SilverStone model instead if you need high efficiency, premium electrical components, and an extra 200 watts of headroom for an advanced small-form-factor build.

Cooler Master V750 SFX Gold PCIe 5.1 PSU

The Cooler Master V750 Gold provides 750 watts of output, giving you 250 more watts than the Apevia PS-SFX500W. It incorporates modern PCIe 5.1 specifications, ATX 3.1 compatibility, and a dedicated 90-degree PCIe 5.1 power cable. Apevia relies on a single 6/8-pin PCIe connector with standard wiring, lacking modern high-power graphics card interfaces. The Cooler Master unit measures 3.94 inches long, 4.92 inches wide, and 2.5 inches high with a weight of 3.13 pounds. You give up the basic, low-power simplicity of Apevia's design. Choose the Cooler Master V750 if you are assembling a modern mini-ITX system that demands direct PCIe 5.1 power and elevated wattage.

Quick picks

Our 7 picks

1 Best overall

Apevia 500W SFX Power Supply

Best for: compact single-GPU small-form-factor PC builds

Wattage

500W

PCIe Connector Type

6/8pin PCIe

Fan Size

80mm

Form Factor

SFX

Device Compatibility

PCs

Dimensions

4.92 × 3.94 × 2.5 inches

View on Amazon: Apevia 500W SFX Power Supply Affiliate link

The Apevia 500W SFX Power Supply provides 500 watts of output in a compact 4.92-inch by 3.94-inch by 2.5-inch chassis. It features a split 20+4 pin main connector, one 4+4 pin CPU connector, one 6+2 pin PCIe connector, three SATA plugs, and two Molex plugs. This unit fits your Mini-ITX or Micro-ATX small-form-factor builds that require standard 500W capacity and fixed wiring.

Pros

• Compact SFX dimensions measuring 4.92 by 3.94 by 2.5 inches
• Split 6+2 pin PCIe and 4+4 pin CPU connectors for flexible board compatibility
• Equipped with three SATA and two 4-pin Molex power connectors

Cons

• Offers only a single PCIe power connector
• No modular cable management listed
• No 80 Plus efficiency certification specified

Good fit if

• You build in a Mini-ITX or Micro-ATX small-form-factor case.
• You use a graphics card that requires only one 6-pin or 8-pin connector.
• You need standard 500W capacity with both SATA and Molex connectivity.

Skip if

• You run high-draw graphics cards requiring multiple PCIe connectors.
• You prefer modular cables to eliminate unused wiring in cramped cases.

Verdict: Apevia 500W SFX Power Supply delivers 500 watts of power with split connectors for basic small-form-factor systems. It handles compact desktop configurations that do not require multiple graphics card connectors or modular cables.

2 Best 80 plus gold

SilverStone 700W SFX 80 Plus Gold Power Supply

Best for: high-wattage compact small form factor builds

Wattage

700W

Efficiency Rating

80 PLUS Gold

Modularity

Fully Modular

Fan Size

92mm

Form Factor

SFX

Dimensions

4.92 × 3.94 × 2.5 inches

View on Amazon: SilverStone 700W SFX 80 Plus Gold Power Supply Affiliate link

This unit delivers 700W of power in a standard SFX form factor with an 80 PLUS Gold efficiency rating. It features fully modular flat cables and all Japanese capacitors. A 92mm fluid dynamic bearing fan provides cooling. It suits you if you need significantly more headroom than a 500W unit and want full modularity for a compact chassis.

Pros

• 700W output with 80 PLUS Gold efficiency rating
• 100% modular flexible flat cables
• All Japanese capacitors and 3% voltage regulation
• 92mm FDB fan with 18 dBA minimum noise level

Cons

• Not compatible with standard ATX mounting holes
• 92mm fan is smaller than SFX-L 120mm alternatives

Good fit if

• You need 700W of power for high-draw hardware in an SFX case
• You want fully modular flat cables to simplify cable routing
• You prefer all Japanese capacitors for clean power delivery

Skip if

• You need mounting compatibility with standard ATX power supply cutouts
• You only require 500W or lower for basic components

Verdict: SilverStone 700W Gold SFX Power Supply provides 700W of fully modular 80 PLUS Gold power for compact systems. It offers upgraded wattage, Japanese capacitors, and tight voltage regulation for high-demand small form factor builds.

3 Also great

SilverStone 450W SFX Bronze Power Supply

Best for: budget-conscious small-form-factor builds

Wattage

450W

Efficiency Rating

80 Plus Bronze

Form Factor

SFX

Dimensions

9 × 7 × 4 inches

View on Amazon: SilverStone 450W SFX Bronze Power Supply Affiliate link

This SilverStone unit delivers 450W of continuous power in a compact SFX form factor. It carries an 80 Plus Bronze efficiency rating, reaching between 82% and 85% efficiency under typical loads. The power supply includes an ATX adapter bracket and provides a single +12V rail rated at 36A. It suits your build if you need reliable power for an entry-level or mid-range small-form-factor setup without excess capacity.

Pros

• 450W continuous power output rated for 24/7 operation
• Includes an adapter bracket to fit standard ATX cases
• Single +12V rail delivering up to 36A
• 80 Plus Bronze certified efficiency

Cons

• 450W capacity offers less headroom than 500W or higher units
• 80 Plus Bronze rating delivers lower efficiency than Gold or Platinum models

Good fit if

• You need a 450W SFX power supply for a modest compact system.
• You want the option to install an SFX unit inside an ATX case using an included bracket.

Skip if

• You require 500W or more for higher-draw graphics cards.
• You prioritize 80 Plus Gold or higher energy efficiency.

Verdict: SilverStone 450W SFX Bronze Power Supply provides dependable continuous output and ATX case compatibility for modest small-form-factor builds. Its 450W rating and Bronze efficiency make it a practical choice when lower wattage satisfies your system requirements.

4 Best premium

SilverStone 700W Platinum SFX-L Power Supply

Best for: compact builds wanting quiet 120mm cooling

Wattage

700W

Efficiency Rating

80 PLUS Platinum

Modularity

Fully Modular

PCIe Connector Type

PCI-E 8/6pin

Fan Size

120mm

Form Factor

SFX

View on Amazon: SilverStone 700W Platinum SFX-L Power Supply Affiliate link

This SilverStone unit provides 700W of continuous power with an 80 PLUS Platinum efficiency rating. Unlike standard SFX units, it uses a longer 5.12-inch SFX-L chassis to house a larger 120mm cooling fan with semi-fanless operation. You get fully modular flat cables and four PCIe 8/6-pin connectors. It suits you if you need high efficiency, quieter cooling, and multi-GPU or high-draw graphics card support in a compact build.

Pros

• 80 PLUS Platinum efficiency rating
• 120mm fan with semi-fanless operation
• 700W continuous output rated for 24/7 use
• Fully modular flat flexible cables
• Four PCIe 8/6-pin connectors

Cons

• Extended 5.12-inch length requires more case clearance than standard SFX
• Total weight is 5.07 pounds

Good fit if

• You need 700W continuous output with 80 PLUS Platinum efficiency.
• You want a 120mm fan with semi-fanless mode in a compact build.
• You require four PCIe 8/6-pin power connections.

Skip if

• You have a small case limited strictly to standard SFX depths under 5.12 inches.
• You only need a basic 300W to 500W power supply.

Verdict: SilverStone 700W Platinum SFX-L Power Supply delivers high efficiency and quiet 120mm cooling for compact systems that accommodate its longer depth.

5 Best budget

SilverStone 300W SFX Bronze Power Supply

Best for: low-power 24/7 compact PC builds

Wattage

300W

Efficiency Rating

80 Plus Bronze

Fan Size

92mm

Form Factor

SFX

Dimensions

3.94 × 4.92 × 2.5 inches

View on Amazon: SilverStone 300W SFX Bronze Power Supply Affiliate link

This SilverStone unit is a compact SFX power supply delivering 300W of continuous power at 40°C. It carries an 80 Plus Bronze efficiency rating, reaching 82% to 85% efficiency across standard loads. A 92mm cooling fan keeps temperatures controlled inside small cases. With its included ATX bracket and single +12V rail, it suits you if you are building a low-power compact PC or desktop system that runs continuous 24/7 workloads.

Pros

• 300W continuous output rated for 24/7 operation at 40°C
• 80 Plus Bronze certified efficiency
• Includes ATX adapter bracket for standard cases
• Equipped with a 92mm silent cooling fan

Cons

• 300W ceiling limits component power draw
• Bronze efficiency is lower than Gold-rated models

Good fit if

• You need continuous 24/7 operation for a low-power system.
• You want SFX sizing with the option to mount in an ATX slot.

Skip if

• You require more than 300W for high-demand components.
• You want higher efficiency than 80 Plus Bronze.

Verdict: SilverStone 300W Bronze SFX Power Supply delivers steady continuous output for low-draw builds requiring 24/7 stability. Its included ATX bracket and 92mm fan make it a flexible fit for compact chassis.

6 Best 80 plus platinum

SilverStone 700W Platinum SFX Power Supply

Best for: high-efficiency small form factor systems

Wattage

700W

Efficiency Rating

80 PLUS Platinum

Fan Size

92mm

Form Factor

SFX

Dimensions

3.94 × 4.92 × 2.5 inches

Weight

4.59 pounds

View on Amazon: SilverStone 700W Platinum SFX Power Supply Affiliate link

This SilverStone unit delivers 700 watts of output in a compact SFX form factor measuring 3.94 inches long. It features an 80 PLUS Platinum efficiency rating, all Japanese capacitors, and a single +12V rail. A 92mm fluid dynamic bearing fan handles cooling with an 18 dBA minimum noise level. It suits you if you need high efficiency and high wattage for a dense, small-form-factor build.

Pros

• 80 PLUS Platinum efficiency certification
• 700W output in standard SFX dimensions
• 92mm FDB fan with 18 dBA minimum noise
• All Japanese capacitors

Cons

• ATX mounting bracket requires separate adapter purchase
• Weighs 4.59 pounds

Good fit if

• You need 700W of power in a standard SFX footprint.
• You prioritize 80 PLUS Platinum electrical efficiency.
• You want internal build components using all Japanese capacitors.

Skip if

• You need an included ATX frame adapter out of the box.
• You require a power supply unit lighter than 4.59 pounds.

Verdict: SilverStone 700W Platinum SFX Power Supply pairs 700 watts of capacity with 80 PLUS Platinum efficiency in a compact enclosure. It provides clean power delivery and Japanese capacitors for compact builds requiring substantial headroom.

7 Also great

Cooler Master V750 SFX Gold PCIe 5.1 PSU

Best for: mini-ITX builds needing native PCIe 5.1 power

Efficiency Rating

Gold

ATX Version

ATX 3.1

PCIe Connector Type

12VHPWR

Form Factor

SFX

PCIe Version

PCIe 5.1

Dimensions

3.94 × 4.92 × 2.5 inches

View on Amazon: Cooler Master V750 SFX Gold PCIe 5.1 PSU Affiliate link

This SFX power supply provides 750 watts of output with 80 Plus Gold efficiency and ATX 3.1 compatibility. It features a right-angle 90-degree 12VHPWR PCIe 5.1 cable delivering up to 450 watts to your graphics card. Measuring 4.92 by 3.94 by 2.5 inches, it fits mini-ITX cases cleanly while reducing wire clutter. It suits you if you need modern power delivery for high-demand compact PC builds.

Pros

• Native 90-degree 12VHPWR PCIe 5.1 connector
• Delivers up to 450W power via ATX 3.1 GPU cabling
• Compact SFX dimensions of 4.92 by 3.94 by 2.5 inches
• Gold efficiency rating with full-bridge LLC topology

Cons

• Short bundled cables may require extensions in larger cases
• PCIe 5.1 output capped at 450W instead of 600W

Good fit if

• You need 750W capacity with ATX 3.1 and PCIe 5.1 connectivity.
• You build inside a compact mini-ITX chassis where short cables reduce clutter.

Skip if

• You mount your power supply in a larger chassis requiring long cable runs.
• You run an ultra-high-tier GPU demanding more than 450W over 12VHPWR.

Verdict: Cooler Master V750 Gold SFX Power Supply delivers modern ATX 3.1 standards and 750 watts of Gold-rated power to compact mini-ITX cases. It provides a dedicated 90-degree PCIe 5.1 cable designed for high-density small-form-factor builds.

Specifications side by side

Frequently asked questions

See also

• anker power bank alternatives
• cap power rack adjustable alternatives