6 Best Alternatives to the Apevia SFX-AP400W Mini ITX Solution (2026)
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The Apevia SFX-AP400W is a compact 400W power supply designed for small form factor builds. If you are searching for apevia sfx ap400w mini itx solution alternatives, you likely need different specifications or features. This unit provides a standard 80mm fan and essential connectors for basic systems. It fits well in tight cases but may not meet the needs of every user.
Some builders require higher wattage for dedicated graphics cards or silent operation without fans. Others might prefer modular cabling to manage space more effectively. The alternatives listed here were chosen because their specs overlap with the original unit in key areas like form factor and size. Each option offers distinct advantages based on published data. You can compare these models to find the right fit for your specific hardware requirements and case dimensions.
Our top pick: Apevia SFX 400W Power Supply.
How alternatives compare to the Apevia SFX-AP400W
FSP 220W Mini ITX PSU
The FSP 220W Mini ITX PSU offers Active PFC for better electrical efficiency, which the Apevia lacks. It is significantly smaller at 1.6 inches wide, fitting tighter cases than the Apevia’s 4-inch width. You sacrifice wattage here, dropping from 400W to 220W. This makes it suitable only for low-power builds without dedicated graphics cards. The trade-off is clear: you gain efficiency and a smaller footprint but lose headroom for high-draw components. If your system draws less power, this unit provides a more efficient and compact solution than the Apevia.
RGEEK Mini ITX DC to DC ATX Power Supply
The RGEEK Mini ITX DC to DC ATX Power Supply is a DC-to-DC unit that requires an external 12V power source. It weighs just 6.38 ounces, making it far lighter than the Apevia’s 2.03 pounds. It provides 300W output, slightly less than the Apevia’s 400W. This solution is ideal for ultra-compact systems where space is extremely limited. You give up the convenience of a standard AC input for extreme compactness. If your chassis supports external DC power and you need minimal weight, this is a strong alternative to the Apevia.
FOSA 350W Fanless Mini ITX DC Power Supply
The FOSA 350W Fanless Mini ITX DC Power Supply operates without a fan, ensuring silent performance unlike the Apevia’s 80mm thermal-sensing fan. It is ultra-slim at 0.79 inches high, compared to the Apevia’s 2.5 inches. It provides 350W, slightly less than the Apevia’s 400W. You must use an external DC power source. This unit is best for silent, space-constrained builds. If noise is your primary concern and you can accommodate an external power brick, the FOSA offers a quiet, slim alternative to the Apevia.
be quiet! SFX L 600W Gold Modular Power Supply
The be quiet! SFX L 600W Gold Modular Power Supply delivers 600W, significantly more than the Apevia’s 400W. It holds an 80 Plus Gold efficiency rating, offering better power conversion than the Apevia. It features four PCIe connectors, providing more support for dedicated GPUs. It is slightly larger at 4.92 inches wide. This unit is designed for gaming setups requiring high wattage and efficiency. If you need more power and better efficiency for a gaming PC, the be quiet! unit is a superior choice over the Apevia.
Apevia SFX 500W Small Form Factor Power Supply
The Apevia SFX 500W Small Form Factor Power Supply increases wattage to 500W, offering more headroom than the 400W Apevia SFX-AP400W. It shares the same Mini ITX form factor and similar dimensions. It provides essential connectors for single-GPU systems. This unit is ideal if you need slightly more power but want to stay within the same physical constraints. It is a direct upgrade for users who find the 400W model insufficient. If you need more power in the same size, this Apevia variant is the logical step up.
T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU
The T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU provides 600W and full modularity, allowing you to remove unused cables. This reduces clutter in small cases compared to the Apevia’s sleeved but fixed cables. It is narrower at 3.27 inches wide. It uses Japanese capacitors for stable power delivery. This unit is best for dense Mini-ITX builds where cable management is critical. If you need high wattage and the flexibility of modular cabling, this Flex ATX unit offers advantages over the Apevia’s standard configuration.
Quick picks
Our 7 picks
Apevia SFX 400W Power Supply
Best for: basic small form factor desktop builds
- Wattage
- 400W
- PCIe Connector Type
- 6/8pin
- Fan Size
- 80mm
- Form Factor
- Mini ITX
- Dimensions
- 5 × 4 × 2.5 inches
- Weight
- 2.03 pounds
The Apevia SFX 400W Power Supply delivers compact power for Mini ITX and Micro ATX enclosures. It provides up to 400W with a single +12V rail rated at 28A. An 80mm thermal sensing fan handles active cooling inside its 125mm by 100mm by 63.5mm chassis. You get sleeved cables, one 6/8-pin PCIe connector, and two SATA plugs. This unit fits small-footprint desktop builds requiring modest power.
Pros
- Delivers 28A on the +12V rail
- 80mm automatically thermal-sensing cooling fan
- Compact dimensions of 125mm x 100mm x 63.5mm
- Sleeved cables across all harnesses
Cons
- Includes only two SATA power connectors
- Limited to a single 4-pin 12V CPU power connector
- Single 6/8-pin PCIe plug limits expansion
Good fit if
- You build inside a Mini ITX or Micro ATX case using SFX mounting.
- You need a dedicated 6/8-pin PCIe lead for a basic graphics card.
- You run a low-draw desktop setup under 400W total load.
Skip if
- You require more than two SATA storage drives.
- You have a motherboard needing an 8-pin EPS CPU connection.
- You run graphics hardware requiring dual PCIe connectors.
Verdict: Apevia SFX 400W Power Supply delivers essential 400W output in an SFX enclosure with dedicated 6/8-pin PCIe support. It suits basic small form factor systems with low peripheral counts.
FSP 220W Mini ITX PSU
Best for: low-power Mini ITX systems
- Form Factor
- Mini ITX
- Power Factor Correction
- Active PFC
- Dimensions
- 5.9 × 1.6 × 3.2 inches
- Weight
- 1.8 pounds
This FSP unit delivers 220 watts of continuous power in a compact Flex ATX form factor. It features 80 Plus certification and active PFC for efficient energy use. The 40mm fan links to thermal controls, keeping noise low during light loads. It weighs just 1.8 pounds and fits small builds. You get reliable performance for basic Mini ITX systems without excess bulk.
Pros
- 220-watt continuous output
- 80 Plus certification
- Active PFC input
- Compact 1.6-inch height
Cons
- Low 220W power limit
- No modular cabling
- Basic 40mm fan cooling
Good fit if
- You need a small, efficient PSU for light systems
- You prioritize 80 Plus efficiency in a tiny case
- You build a low-power Mini ITX PC
Skip if
- You require high wattage for gaming GPUs
- You need fully modular cables for clean builds
- You want silent fanless operation
Verdict: FSP 220W Mini ITX PSU is a solid, efficient choice for low-power Mini ITX builds. It fits users who need compact dimensions and certified efficiency without high wattage demands.
RGEEK Mini ITX DC to DC ATX Power Supply
Best for: ultra-compact Mini ITX systems using external DC power
- Wattage
- 300W
- Form Factor
- Mini ITX
- Weight
- 6.38 ounces
This RGEEK unit is a DC-to-DC Mini ITX power supply rated at 300W. It plugs directly into your 24-pin motherboard and relies on an external 11.2V to 12.6V DC source via a 5.5mm by 2.5mm input plug. Weighing 6.38 ounces, it suits you if you build an ultra-compact system and do not have space for standard internal AC-to-DC power supplies.
Pros
- Weighs 6.38 ounces for lightweight builds
- 300W output for low-draw Mini ITX systems
- Defensive protection on +3.3V, +12V, +5V, and +5VSB rails
- Includes peak current output shutdown and short-circuit protection
Cons
- Requires an external 11.2V to 12.6V DC power brick
- Limited to a 300W maximum capacity
- Restricted to a 5.5mm outer and 2.5mm inner diameter plug
Good fit if
- You need a 24-pin direct-plug DC board for a compact Mini ITX case.
- You have a compatible 12V DC power source with a 5.5mm by 2.5mm plug.
- You want built-in protection against short circuits and peak current.
Skip if
- You need direct AC wall input without an external DC power adapter.
- You require more than 300W for higher-power components.
Verdict: RGEEK 300W Pico Mini ITX DC Power Supply provides a 6.38-ounce DC-to-DC solution for space-restricted 24-pin builds. It operates effectively if your hardware uses an external 12V direct-current power source.
FOSA 350W Fanless Mini ITX DC Power Supply
Best for: silent ultra-compact Mini ITX desktop builds
- Wattage
- 350W
- Form Factor
- Mini ITX
- Dimensions
- 6.06 × 1.38 × 0.79 inches
- Weight
- 7.88 ounces
This FOSA unit is a 350W Mini ITX DC-to-DC power supply built for ultra-compact systems. It features a fanless design for silent operation, an 85% or higher efficiency rating, and coated PCBA construction. Measuring 6.06 by 1.38 by 0.79 inches and weighing 7.88 ounces, it fits tight spaces where standard supplies cannot. It suits you if you want zero fan noise in a small form factor PC or media center.
Pros
- Fanless architecture provides completely silent operation
- Delivers 350W output with 85%+ efficiency rating
- Ultra-compact dimensions of 6.06 by 1.38 by 0.79 inches
- Includes overvoltage and short-circuit protection features
Cons
- Lower 350W output ceiling than standard 400W alternatives
- Operating temperature range is limited to 40°C maximum
- Requires DC power conversion rather than a direct AC wall plug
Good fit if
- You need completely silent, fanless power delivery in an ultra-compact chassis.
- You have tight clearance requiring a board height under one inch.
- You run a low-power build that stays within a 350W power envelope.
Skip if
- You require more than 350W for higher-draw components.
- You need a standard AC power supply that plugs directly into a wall outlet.
- You operate your hardware in ambient environments hotter than 40°C.
Verdict: FOSA 350W Fanless Mini ITX DC PSU provides completely silent 350W output inside an ultra-slim footprint for compact enclosures. It is a solid, efficient choice when your low-draw build cannot fit a standard-sized power supply.
be quiet! SFX L 600W Gold Modular Power Supply
Best for: compact Mini-ITX gaming setups with dedicated GPUs
- Wattage
- 600W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Modular
- Fan Size
- 120mm
- Warranty
- 3-Year
- Form Factor
- Mini ITX
View on Amazon: be quiet! SFX L 600W Gold Modular Power Supply
This is an SFX-L form factor unit delivering 600 watts of continuous power with 80 PLUS Gold efficiency. It features modular cabling, four PCIe power connectors, and a 120mm temperature-controlled cooling fan. You also get an included SFX-to-ATX adapter bracket for flexible chassis mounting. It fits your build if you run a dedicated graphics card in a compact Mini-ITX or Micro-ATX setup requiring higher wattage than standard baseline power supplies.
Pros
- 600W output with 80 PLUS Gold efficiency
- Four PCIe connectors for multi-GPU or high-draw graphics cards
- Modular cable management
- Temperature-controlled 120mm cooling fan
Cons
- 5.12-inch length requires extra clearance over standard SFX units
- Three-year manufacturer warranty period
Good fit if
- You need four PCIe connectors to power a dedicated graphics card.
- You want modular cables to reduce airflow clutter inside small cases.
- You have clearance for the 5.12-inch SFX-L depth.
Skip if
- You require a strictly standard SFX chassis depth under 5 inches.
- You need more than 600W for your hardware configuration.
Verdict: be quiet! SFX-L 600W Gold Power Supply delivers stable 600W Gold-rated efficiency and four PCIe connectors for compact gaming systems that accept SFX-L dimensions.
Apevia SFX 500W Small Form Factor Power Supply
Best for: compact single-GPU Mini ITX systems
- Wattage
- 500W
- PCIe Connector Type
- 6+2 pin
- Form Factor
- Mini ITX
- Dimensions
- 4.92 × 3.94 × 2.5 inches
View on Amazon: Apevia SFX 500W Small Form Factor Power Supply
This Apevia 500W power supply provides a compact SFX form factor measuring 4.92 by 3.94 by 2.5 inches for tight Mini ITX and Micro ATX enclosures. It delivers 500 watts of output and includes a split 20+4-pin motherboard connector, an 8-pin CPU lead, and a 6+2-pin PCIe plug. You get standard cabling with three SATA ports, making it suitable if you need extra headroom in small enclosures.
Pros
- 500W continuous output capacity
- Compact dimensions of 4.92 x 3.94 x 2.5 inches
- Split 6+2-pin PCIe connector for graphics card compatibility
- Equipped with three SATA and two 4-pin Molex connectors
Cons
- Single PCIe plug limits high-power dual-connector GPUs
- Non-modular captive cabling takes up extra internal space
- No 80 PLUS efficiency rating listed in specifications
Good fit if
- You need 500W of power within an SFX or Mini ITX layout.
- You run a single graphics card that uses one 6-pin or 8-pin connector.
- You use up to three SATA storage drives or accessories.
Skip if
- You require modular cables to minimize clutter in tight chassis spaces.
- You run a higher-end graphics card requiring multiple PCIe cables.
Verdict: Apevia SFX 500W Mini ITX Power Supply delivers compact 500W power with essential connectors for small form factor setups. It fits space-restricted builds requiring a basic single-GPU configuration.
T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU
Best for: dense Mini-ITX builds needing modular cabling
- Wattage
- 600W
- Modularity
- Fully Modular
- Form Factor
- Mini ITX
- Dimensions
- 6.5 × 3.27 × 1.57 inches
- Weight
- 2.47 pounds
View on Amazon: T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU
This unit is a 600W Flex ATX power supply built for compact Mini-ITX builds and 1U servers. Its fully modular design lets you attach only the cables you need to conserve room inside tight enclosures. Equipped with 100% Japanese capacitors, a DC-DC topology, and wide 100-240V AC input, it fits systems requiring extra power headroom while keeping cable clutter to a minimum.
Pros
- Fully modular cabling allows connecting only needed wires
- Delivers up to 600W of power output
- Constructed with 100% Japanese capacitors and DC-DC architecture
- Supports universal 100-240V AC input range
- Includes comprehensive protections: OVP, UVP, OCP, OPP, SCP, and OTP
Cons
- Requires using only the proprietary packaged modular cables
- At 165mm in length, it is longer than standard fixed-cable Flex ATX units
- No official 80 Plus efficiency certification level listed
Good fit if
- You need fully modular cabling to eliminate clutter in a tight Flex ATX case.
- You run a Mini-ITX system requiring up to 600W of total output.
- You want standard 100-240V AC input tolerance for variable wall power.
Skip if
- You need a standard SFX form factor rather than Flex ATX dimensions.
- You intend to use existing or third-party modular cable sets.
Verdict: T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU provides high wattage and detachable cabling for compact Mini-ITX chassis. Its internal Japanese capacitors and standard electrical protections deliver stable power in space-constrained enclosures.
Specifications side by side
| Spec | Apevia SFX 400W Power Supply | FSP 220W Mini ITX PSU | RGEEK Mini ITX DC to DC ATX Power Supply | FOSA 350W Fanless Mini ITX DC Power Supply | be quiet! SFX L 600W Gold Modular Power Supply | Apevia SFX 500W Small Form Factor Power Supply | T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU |
|---|---|---|---|---|---|---|---|
| Wattage | 400W | not specified | 300W | 350W | 600W | 500W | 600W |
| Efficiency Rating | not specified | not specified | not specified | not specified | 80 PLUS Gold | not specified | not specified |
| Modularity | not specified | not specified | not specified | not specified | Modular | not specified | Fully Modular |
| PCIe Connector Type | 6/8pin | not specified | not specified | not specified | not specified | 6+2 pin | not specified |
| Fan Size | 80mm | not specified | not specified | not specified | 120mm | not specified | not specified |
| Warranty | not specified | not specified | not specified | not specified | 3-Year | not specified | not specified |
| Form Factor | Mini ITX | Mini ITX | Mini ITX | Mini ITX | Mini ITX | Mini ITX | Mini ITX |
| Recommended Use | not specified | not specified | not specified | not specified | Gaming | not specified | not specified |
| Power Factor Correction | not specified | Active PFC | not specified | not specified | not specified | not specified | not specified |
| Dimensions | 5 × 4 × 2.5 inches | 5.9 × 1.6 × 3.2 inches | not specified | 6.06 × 1.38 × 0.79 inches | 5.12 × 4.92 × 2.52 inches | 4.92 × 3.94 × 2.5 inches | 6.5 × 3.27 × 1.57 inches |
| Weight | 2.03 pounds | 1.8 pounds | 6.38 ounces | 7.88 ounces | 2.56 pounds | not specified | 2.47 pounds |
| Model | SFX-AP400W | FSP220-60LE(80) | LR1106-250W12VDC | not specified | BN639 | SFX-AP500W | TF600 |
| Color | not specified | not specified | not specified | default | Black | not specified | black |
| Size | not specified | not specified | not specified | not specified | 600W | not specified | 165*83*40mm |
Frequently asked questions
What is the most powerful Mini ITX alternative to the Apevia SFX-AP400W?
The be quiet! SFX-L 600W Gold is the highest-wattage option listed. It delivers 600W of stable power, significantly more than the Apevia’s 400W. This unit features an 80 Plus Gold efficiency rating and includes four PCIe connectors. It fits compact gaming setups that require dedicated GPU support within SFX-L dimensions.
Is there a fanless Mini ITX power supply available?
Yes, the FOSA 350W Fanless Mini ITX DC Power Supply provides completely silent operation. It offers 350W output in an ultra-slim footprint measuring 1.38 inches wide. This model is ideal for silent ultra-compact desktop builds where airflow is restricted or noise must be eliminated entirely.
Which alternative offers fully modular cabling for Mini ITX builds?
The T.F.SKYWINDINTL 600W Fully Modular Flex ATX PSU features detachable cabling. This design helps manage cable clutter in dense Mini-ITX chassis. It provides 600W of power and uses internal Japanese capacitors for stable performance. The unit measures 3.27 inches wide, fitting space-constrained enclosures effectively.
Can I find a DC-to-DC power supply for ultra-compact systems?
The RGEEK Mini ITX DC to DC ATX Power Supply is a 300W DC-to-DC solution. It weighs only 6.38 ounces, making it extremely lightweight. This unit requires an external 12V direct-current power source. It is best suited for space-restricted builds that do not need standard AC input.
What is the smallest Mini ITX power supply on this list?
The FSP 220W Mini ITX PSU is the most compact option. It measures just 1.6 inches wide and 3.2 inches high. This unit includes Active PFC for better electrical efficiency. It is a solid choice for low-power Mini ITX systems where physical space is extremely limited.
Does Apevia offer a higher-wattage alternative to the 400W model?
Yes, the Apevia SFX 500W Small Form Factor Power Supply provides more output. It delivers 500W in a similar compact form factor. This unit includes essential connectors for compact single-GPU Mini ITX systems. It fits space-restricted builds requiring a basic single-GPU configuration without needing a larger chassis.
Which PSU is best for basic small form factor desktop builds?
The Apevia SFX 400W Power Supply remains the best overall choice for basic needs. It delivers essential 400W output with dedicated 6/8-pin PCIe support. The unit fits basic small form factor systems with low peripheral counts. It provides a reliable foundation for standard Mini ITX desktop configurations.