6 Best Alternatives to the Apevia TFX-AP300W 300W TFX Power (2026)
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
If you need apevia tfx ap300w 300w tfx power alternatives, matching the physical layout and electrical limits of your case is essential. The Apevia TFX-AP300W delivers standard 300W output, forced air cooling from an 80mm fan, and standard protections. Measuring 3.23 by 2.5 by 6.75 inches, it handles basic low-draw setups with dual 115-230V AC input and 5% voltage tolerance across its +3.3V, +5V, and +12V rails.
However, your build may demand different specifications. You might require higher output like 500W, an 80 PLUS Gold efficiency rating, or lower ratings like 210W or 250W for specific desktop chassis. Other situations call for alternative chassis dimensions, Active PFC support, a different brand, or a diagnostic tester to verify rail voltages. The 6 alternatives featured here were chosen because their specs overlap with the original, helping you find a compatible TFX unit for your system in 2026.
Our top pick: Apevia 300W TFX Power Supply.
How Each Alternative Compares
BackPlanePro 300W TFX Power Supply
The BackPlanePro 300W matches the 300-watt output and 80mm cooling fan of the Apevia unit, but it integrates Active PFC for power management. You give up the black chassis finish for a grey exterior, and you gain nearly a pound of mass, as the BackPlanePro weighs 3 pounds compared to the 2.1-pound Apevia. Its dimensions also differ slightly at 6.89 inches long, 2.56 inches wide, and 3.35 inches high, whereas Apevia measures 6.75 by 3.23 by 2.5 inches. You should choose the BackPlanePro if you require Active PFC in a slim MicroATX desktop chassis that accommodates grey metal casings.
Lenovo ThinkCentre 210W TFX Power Supply
The Lenovo ThinkCentre power supply provides 210 watts of power, which is 90 watts less than the Apevia 300W unit. Its physical enclosure measures 9.7 inches wide, 6.5 inches high, and 1.1 inches long, creating a much flatter and wider profile than Apevia’s standard 6.75 by 3.23 by 2.5-inch casing. You sacrifice the higher wattage ceiling and universal multi-rail output of the Apevia model. However, you gain a targeted fit built specifically for compatible low-draw ThinkCentre desktop computers. You should pick this model if your Lenovo chassis requires these specific dimensions and your hardware demands 210 watts or less.
SilverStone 500W Gold TFX Power Supply
The SilverStone TX500-G delivers 500 watts of continuous output, providing 200 watts more headroom than the 300W Apevia. It also carries an official 80 PLUS Gold efficiency rating, which the Apevia lacks. In exchange, the SilverStone has slightly larger physical dimensions at 6.9 inches long, 3.4 inches wide, and 2.6 inches high, compared to Apevia’s 6.75 by 3.23 by 2.5 inches. Its fixed cabling design also requires you to plan for extra wire management inside tight enclosures. You should select the SilverStone unit if you run a demanding, high-draw small-form-factor system that requires 24/7 operation and higher electrical efficiency.
Be Quiet! TFX Power 3 TFX Power Supply
The Be Quiet TFX Power 3 comes in a black casing measuring 6.89 inches long, 3.35 inches wide, and 2.56 inches high. This makes it slightly larger than the Apevia, which measures 6.75 by 3.23 by 2.5 inches. At 3.09 pounds, the Be Quiet unit is nearly a full pound heavier than Apevia’s 2.1-pound frame. While Apevia lists specific rail outputs including 20A on the +12V rail, the Be Quiet focuses strictly on standard TFX chassis mounting. You should select this alternative if you need exact TFX specifications for a compact desktop case and prefer a sturdier build.
MAXROB 250W TFX Power Supply
The MAXROB TFX power supply delivers 250 watts of total capacity, giving you 50 watts less electrical overhead than the 300-watt Apevia. It is built to replace FSP250-50SAV(PF) units in slimline systems. You give up the higher output ceiling and detailed multi-rail delivery specifications of the Apevia TFX-AP300W, including its dedicated 20A 12V line and 80mm cooling design. However, you gain a targeted replacement that matches systems engineered specifically around 250-watt FSP power supplies. You should choose the MAXROB unit if your slim desktop setup specifically calls for an FSP-compatible model and draws less than 250 watts.
Yosoo Health Gear LCD Power Supply Tester
The Yosoo Health Gear device is not a power supply, but a diagnostic tool for testing TFX power units. While the Apevia supplies 300 watts of electricity across several voltage rails, this tester consumes virtually no power, measuring 3.94 by 1.97 by 0.79 inches and weighing just 2.82 ounces. You give up power delivery entirely because it cannot run your PC components. In exchange, you get a backlit LCD screen and an integrated buzzer to verify voltage outputs and power good signals. You should choose this tester if you need to diagnose suspected faults in your current power supply before replacing it.
Quick picks
Our 7 picks
Apevia 300W TFX Power Supply
Best for: basic low-wattage TFX chassis replacements
- Wattage
- 300W
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.75 × 3.23 × 2.5 inches
- Weight
- 2.1 pounds
The Apevia 300W TFX Power Supply delivers 300W of total output for compact desktop chassis. It features a single +12V rail rated at 20A, an 80mm cooling fan, and dual-voltage 115-230V input switching. Sized at 6.75 by 3.23 by 2.5 inches, it fits standard TFX mountings. This unit suits you if you need a direct baseline replacement power supply for low-power slimline home or office computer builds.
Pros
- +12V rail rated at 20A
- Forced air cooling with 80mm fan
- Dual 115V and 230V input voltage support
- Standard TFX form factor footprint
Cons
- 300W ceiling limits component upgrades
- No 80 PLUS efficiency rating listed
Good fit if
- You need a TFX chassis fit measuring 6.75 by 3.23 by 2.5 inches.
- You run a low-draw desktop requiring 300W or less.
- You require switchable 115V to 230V mains compatibility.
Skip if
- You require more than 20A on the +12V rail for dedicated GPUs.
- You need verified 80 PLUS energy efficiency.
Verdict: Apevia 300W TFX Power Supply provides baseline 300W capacity with an 80mm fan for compact slimline enclosures. It delivers standard specifications for basic low-draw computer systems.
BackPlanePro 300W TFX Power Supply
Best for: MicroATX slimline desktop PC replacements
- Wattage
- 300W
- Fan Size
- 80mm
- Warranty
- One Year
- Form Factor
- TFX
- Dimensions
- 6.89 × 2.56 × 3.35 inches
- Weight
- 3 pounds
This BackPlanePro unit is a 300W TFX form factor power supply built for MicroATX slim cases. It features Active PFC auto-switching and includes an 80mm cooling fan to regulate internal temperatures. Measuring 6.89 by 3.35 by 2.56 inches and weighing three pounds, it serves as a direct hardware replacement if you need standard 300-watt power output for compatible slimline desktop systems such as the Dell Inspiron 530s or 531s.
Pros
- 300W power output for MicroATX slim cases
- Active PFC with auto-switching
- Integrated 80mm cooling fan
- Compact TFX dimensions of 6.89 x 3.35 x 2.56 inches
Cons
- One-year warranty coverage
- No 80 PLUS efficiency rating specified
Good fit if
- You need a 300W TFX replacement for Dell Inspiron 530s or 531s slimline desktops.
- You require a MicroATX slim case power unit with Active PFC auto-switching.
Skip if
- You need higher capacity than 300W for demanding components.
- You require a certified 80 PLUS efficiency rating.
Verdict: BackPlanePro 300W TFX Power Supply delivers straightforward 300-watt replacement power with Active PFC for slim MicroATX systems. Its compact dimensions and standard 80mm fan make it a direct fit for compatible compact cases.
Lenovo ThinkCentre 210W TFX Power Supply
Best for: Lenovo ThinkCentre low-draw system replacements
- Wattage
- 210W
- Form Factor
- TFX
- Dimensions
- 1.1 × 9.7 × 6.5 inches
This Lenovo ThinkCentre 210W TFX Power Supply provides a direct replacement option for low-draw desktop systems. It delivers 210 watts of power and supports wide-range 100 to 240 Vac input voltages. The unit uses a standard TFX form factor, measuring 9.7 inches wide, 6.5 inches high, and 1.1 inches long. It suits you if you need to restore an OEM ThinkCentre machine with modest power needs.
Pros
- 210W total power output
- Wide 100-240Vac input voltage support
- ES7 energy rating profile
- Standard TFX form factor chassis fit
Cons
- Lower 210W capacity than standard 300W TFX alternatives
- Connector types and quantities not specified in data
Good fit if
- You need a factory-spec replacement unit for a Lenovo ThinkCentre.
- You run a low-power build that stays within 210 watts.
- You need a power supply supporting 100-240Vac input.
Skip if
- You need 300W or higher to run your hardware configuration.
- You require detailed connector specifications before purchasing.
Verdict: Lenovo ThinkCentre 210W TFX Power Supply delivers targeted OEM power for compatible low-draw ThinkCentre setups. It serves as a direct form-factor replacement when your system requires 210 watts or less.
SilverStone 500W Gold TFX Power Supply
Best for: high-demand small-form-factor builds needing 24/7 power
- Wattage
- 500W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fixed Cable
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.9 × 3.4 × 2.6 inches
This SilverStone unit delivers 500W continuous power in a standard TFX form factor. It carries an 80 PLUS Gold efficiency rating and runs on an 80mm fan with an 18 dBA noise floor. If you need more headroom than typical 300W units for 24/7 operation at up to 50°C, this supply gives you stable output. It suits small-form-factor builds that require higher wattage and lower electrical waste.
Pros
- 500W continuous output rated for 24/7 operation at 50°C
- 80 PLUS Gold certified efficiency
- Low minimum noise level of 18 dBA from 80mm fan
- Standard TFX form factor measuring 3.4 by 2.6 by 6.9 inches
Cons
- Fixed cable design without modular management
- 6.9-inch length requires clearance check in tight cases
Good fit if
- You need 500W of continuous power for high-demand TFX systems.
- You want 80 PLUS Gold efficiency to reduce heat and power loss.
- You run your system continuously in ambient environments up to 50°C.
Skip if
- You need modular cables to save space in ultra-compact cases.
- You only require a baseline 300W power supply for light tasks.
Verdict: SilverStone 500W Gold TFX Power Supply provides continuous 500W output and 80 PLUS Gold efficiency for demanding small-form-factor systems. Its fixed cabling requires interior clearance, but it delivers reliable power in 24/7 setups.
Be Quiet! TFX Power 3 TFX Power Supply
Best for: compact TFX PC builds
- Form Factor
- TFX
- Dimensions
- 6.89 × 3.35 × 2.56 inches
- Weight
- 3.09 pounds
The Be Quiet! TFX Power 3 is a black power supply built in the standard TFX form factor. It measures 6.89 inches long, 3.35 inches wide, and 2.56 inches high, making it a direct fit for compact cases designed around TFX dimensions. Weighing 3.09 pounds, this unit suits you if you need a dedicated replacement unit matching these specific enclosure measurements for small desktop systems.
Pros
- Standard TFX form factor
- Compact dimensions of 6.89 by 3.35 by 2.56 inches
- Weighs 3.09 pounds
Cons
- Wattage output is not listed in the specifications
- Efficiency rating is not provided in the data
Good fit if
- You need a TFX form factor power supply.
- You have a chassis accommodating 6.89 by 3.35 by 2.56 inch power supplies.
Skip if
- You need confirmed wattage specifications before purchasing.
- You require efficiency certifications listed in the product specifications.
Verdict: Be Quiet! TFX Power 3 TFX Power Supply delivers standard TFX sizing with dimensions of 6.89 by 3.35 by 2.56 inches in a black chassis. It provides a dedicated fit for compact builds requiring exact TFX mounting specifications.
MAXROB 250W TFX Power Supply
Best for: 250W FSP-compatible slim PC replacements
- Wattage
- 250W
- Form Factor
- TFX
The MAXROB 250W TFX Power Supply provides 250W of power in a compact TFX form factor. If you need a replacement power unit for systems compatible with FSP platforms, this model delivers direct physical and electrical compatibility. Its lower 250W continuous output suits low-draw desktop PCs, office workstations, and slim chassis builds that do not reach the 300W draw of standard TFX units.
Pros
- 250W power output
- Compact TFX form factor
- Direct replacement design for FSP-compatible chassis
Cons
- Lower wattage than 300W baseline units
- Efficiency rating not listed in specifications
- Cable lengths and connector counts not specified
Good fit if
- You need a direct TFX replacement for an existing 250W FSP unit.
- You run a low-draw desktop PC that requires 250W or less.
Skip if
- You need the full 300W capacity of the Apevia baseline.
- You require verified 80 PLUS efficiency certification.
Verdict: MAXROB 250W TFX Power Supply serves as a direct 250W replacement option if your compact system does not require a full 300W power supply.
Yosoo Health Gear LCD Power Supply Tester
Best for: diagnosing TFX power supply voltages and faults
- Form Factor
- TFX
- Display Type
- LCD Display
- Dimensions
- 3.94 × 1.97 × 0.79 inches
- Weight
- 2.82 ounces
This device is a diagnostic power supply tester rather than a replacement unit. It checks 20-pin and 24-pin TFX, ATX, BTX, and ITX units using a built-in LCD screen that shows voltage groups and PG values. It features an automated buzzer alarm for faults and indicator lights for peripheral connectors like SATA, IDE, and PCIe lines. You will find it useful if you want to troubleshoot your current TFX unit before replacing it.
Pros
- Backlit LCD screen displays voltage groups and PG values
- Built-in buzzer automatically sounds an alarm if defects occur
- Compatible with 20-pin and 24-pin ATX, BTX, ITX, and TFX units
- Compact plastic shell measuring 3.94 by 1.97 by 0.79 inches
Cons
- Is a diagnostic test unit rather than a functional power supply
- No numerical LCD voltage readout for SATA, IDE, P6, or P8 lines
Good fit if
- You want to diagnose an existing TFX unit before ordering a replacement.
- You need an LCD screen to read voltage outputs and PG values clearly.
Skip if
- You need an actual power supply to deliver power to your PC components.
- You want direct LCD voltage readings for SATA or PCIe auxiliary cables.
Verdict: Yosoo Health Gear LCD Power Supply Tester serves as a dedicated diagnostic device to confirm voltage outputs and power good signals across multiple form factors. Its integrated buzzer and backlit screen help you quickly identify hardware faults before replacing parts.
Specifications side by side
| Spec | Apevia 300W TFX Power Supply | BackPlanePro 300W TFX Power Supply | Lenovo ThinkCentre 210W TFX Power Supply | SilverStone 500W Gold TFX Power Supply | Be Quiet! TFX Power 3 TFX Power Supply | MAXROB 250W TFX Power Supply | Yosoo Health Gear LCD Power Supply Tester |
|---|---|---|---|---|---|---|---|
| Wattage | 300W | 300W | 210W | 500W | not specified | 250W | not specified |
| Efficiency Rating | not specified | not specified | not specified | 80 PLUS Gold | not specified | not specified | not specified |
| Modularity | not specified | not specified | not specified | Fixed Cable | not specified | not specified | not specified |
| Fan Size | 80mm | 80mm | not specified | 80mm | not specified | not specified | not specified |
| Warranty | not specified | One Year | not specified | not specified | not specified | not specified | not specified |
| Form Factor | TFX | TFX | TFX | TFX | TFX | TFX | TFX |
| Size | TFX 300W | not specified | not specified | 500W | not specified | not specified | not specified |
| Display Type | not specified | not specified | not specified | not specified | not specified | not specified | LCD Display |
| Dimensions | 6.75 × 3.23 × 2.5 inches | 6.89 × 2.56 × 3.35 inches | 1.1 × 9.7 × 6.5 inches | 6.9 × 3.4 × 2.6 inches | 6.89 × 3.35 × 2.56 inches | not specified | 3.94 × 1.97 × 0.79 inches |
| Weight | 2.1 pounds | 3 pounds | not specified | not specified | 3.09 pounds | not specified | 2.82 ounces |
| Color | Black | Grey | not specified | black (lead-free paint) | Black | not specified | Black |
| Model | TFX-AP300W | LYSB00CXAUQJK-CMPTRACCS | 7823903000 | SST-TX500-G | BN323 | FSP250-50SAV(PF) TFX 250W | not specified |
If you need low voltage thermostat hardware instead, consult google nest power connector alternatives to check your wiring.
Frequently asked questions
Can you replace the Apevia 300W with a higher wattage TFX power supply?
Yes, you can replace it with a higher capacity model like the SilverStone 500W Gold TFX Power Supply. The SilverStone unit delivers 500 watts of continuous output and carries an 80 PLUS Gold efficiency rating. Its dimensions measure 3.4 inches wide, 2.6 inches high, and 6.9 inches long, fitting compact systems needing continuous power.
Is a 250W power supply suitable as an Apevia TFX-AP300W alternative?
A 250-watt unit works if your components draw less power than the Apevia model supports. The MAXROB 250W TFX Power Supply uses model number FSP250-50SAV(PF) and serves slim PC setups requiring lower output. Always calculate your build's total energy draw before choosing a lower-wattage unit to prevent unexpected shutdowns under heavy load.
How do the dimensions of the Be Quiet! TFX Power 3 compare to the Apevia 300W?
The Be Quiet! TFX Power 3 measures 3.35 inches wide, 2.56 inches high, and 6.89 inches long, while weighing 3.09 pounds. In comparison, the Apevia TFX-AP300W measures 3.23 by 2.5 by 6.75 inches at 2.1 pounds. You should verify your chassis clearance, as the Be Quiet! chassis is slightly wider and longer.
Will a Lenovo ThinkCentre TFX power supply work in place of the Apevia 300W?
The Lenovo ThinkCentre 210W TFX Power Supply works only if your hardware requires 210 watts or less. Its physical specifications measure 9.7 inches wide, 6.5 inches high, and 1.1 inches long under model number 7823903000. These non-standard dimensions mean it fits targeted OEM ThinkCentre enclosures rather than typical slimline desktop cases.
How can you test if your Apevia TFX power supply needs replacement?
You can diagnose output issues using the Yosoo Health Gear LCD Power Supply Tester. This compact tool measures 3.94 inches long, 1.97 inches wide, and 0.79 inches high. It features a backlit LCD screen and an integrated buzzer to check voltage outputs and power good signals across your power supply before you buy hardware.
What should you know about using the BackPlanePro 300W as a replacement?
The BackPlanePro 300W TFX Power Supply matches standard slim MicroATX needs with 300 watts of power and Active PFC. It measures 2.56 inches wide, 3.35 inches high, and 6.89 inches long in a grey enclosure weighing 3 pounds. Verify that your case mounting matches these dimensions before swapping it with your existing Apevia unit.
How do you choose between 6 TFX power supply alternatives?
You should compare physical dimensions, total wattage, and efficiency ratings across the available models in 2026. Units like the SilverStone 500W offer 80 PLUS Gold efficiency for high demands, whereas models like MAXROB offer 250 watts for lighter builds. Check your internal case space and your total system power consumption before selecting a replacement.