Looking Beyond the BackPlanePro 300W TFX Power Supply? 6 Alternatives Worth a Look
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You might be researching backplanepro actualsilent 300w tfx power alternatives to find the right hardware match for your slimline computer build. The BackPlanePro 300W TFX Power Supply delivers dedicated power for MicroATX slim cases and serves as a direct replacement for systems such as the Dell Inspiron 530s and 531s. It provides 300W of continuous power with Active PFC auto-switching, an 80mm cooling fan, and a grey chassis measuring 6.89 by 2.56 by 3.35 inches.
You may still want a different option if your build requires higher wattage, a different brand, or specific physical clearance. Other builds need lower output such as 210W or 250W, while demanding hardware configurations benefit from 500W units with 80 Plus Gold efficiency ratings. Dimensions also vary across compact cases, making alternative chassis lengths or weights worth evaluating. The 6 alternatives on this list were chosen because their specifications overlap with the original unit, giving you viable TFX form factor replacements and compatible power hardware for compact setups.
Comparing the TFX Power Supply Alternatives
Apevia 300W TFX Power Supply
The Apevia 300W TFX Power Supply matches the 300W total output and 80mm fan cooling of the BackPlanePro unit. It brings a specified 20A single +12V rail and weighs 2.1 pounds, making it lighter than the 3-pound original. However, you give up the grey casing for a black finish, and the chassis dimensions differ slightly at 6.75 inches long, 3.23 inches wide, and 2.5 inches high compared to the 6.89 by 2.56 by 3.35-inch original. You should pick this unit if you need a lightweight 300W replacement for general low-draw slim desktop builds rather than a specific Dell Inspiron chassis.
Lenovo ThinkCentre 210W TFX Power Supply
The Lenovo ThinkCentre 210W TFX Power Supply is engineered specifically for OEM ThinkCentre systems running on standard 100–240Vac input. Compared to the BackPlanePro, you lose 90W of maximum capacity, stepping down from 300W to 210W. The physical form factor is also substantially flatter and broader, measuring 9.7 inches wide, 6.5 inches high, and 1.1 inches long, compared to the 6.89 by 2.56 by 3.35-inch frame of the BackPlanePro. It does not list an 80mm fan or Active PFC rating. Pick this model only if you are servicing a compatible Lenovo ThinkCentre workstation where proprietary chassis mountings require these flat dimensions.
SilverStone 500W Gold TFX Power Supply
The SilverStone 500W Gold TFX Power Supply provides an extra 200W of continuous power over the 300W BackPlanePro, making it capable of handling higher electrical loads. It also adds an official 80 Plus Gold efficiency certification, which the BackPlanePro lacks. In exchange, you get a black lead-free painted chassis with fixed cables, measuring 6.9 inches long, 3.4 inches wide, and 2.6 inches high. While physical length is almost identical to the BackPlanePro at 6.9 inches, width and height vary. Pick this unit if your small-form-factor setup demands 500W of power and certified electrical efficiency rather than basic 300W desktop support.
Be Quiet! TFX Power 3 TFX Power Supply
The Be Quiet! TFX Power 3 TFX Power Supply matches the outer dimensions of the BackPlanePro precisely at 6.89 inches long, 3.35 inches wide, and 2.56 inches high. This identical footprint ensures mechanical alignment in standard TFX cases. However, at 3.09 pounds, it is slightly heavier than the 3-pound BackPlanePro, and it comes in black rather than grey. The specification list does not state its wattage or cooling fan diameter, whereas the BackPlanePro confirms a 300W rating and an 80mm cooling fan. Pick the Be Quiet! unit if your enclosure demands strict standard TFX exterior dimensions in a black finish.
MAXROB 250W TFX Power Supply
The MAXROB 250W TFX Power Supply provides an option based on the FSP250-50SAV(PF) model design. Compared to the BackPlanePro, you lose 50W of continuous power delivery, dropping down to a 250W maximum rating. The manufacturer data also does not specify exterior dimensions, weight, fan size, or warranty duration, unlike the BackPlanePro, which documents a 6.89 by 2.56 by 3.35-inch frame, 3-pound weight, 80mm fan, and one-year warranty. You should choose the MAXROB unit if your compact desktop operates at or below 250W and specifically calls for this FSP model number rather than Dell Inspiron 530s or 531s replacement hardware.
Yosoo Health Gear LCD Power Supply Tester
The Yosoo Health Gear LCD Power Supply Tester differs fundamentally from the BackPlanePro because it is a diagnostic tool, not an electrical power supply. It provides zero wattage to power PC components. Instead, it features an LCD display to check voltage outputs across TFX and ATX units. At 2.82 ounces and measuring 3.94 inches long, 1.97 inches wide, and 0.79 inches high, it is much smaller and lighter than the 3-pound BackPlanePro power unit. You should select this device if you need to troubleshoot power faults on an existing supply before buying a 300W replacement.
Quick picks
Our 7 picks
BackPlanePro 300W TFX Power Supply
Best for: Dell Inspiron SFF slimline power replacements
- Wattage
- 300W
- Fan Size
- 80mm
- Warranty
- One Year
- Form Factor
- TFX
- Dimensions
- 6.89 × 2.56 × 3.35 inches
- Weight
- 3 pounds
View on Amazon: BackPlanePro 300W TFX Power Supply Affiliate link
The BackPlanePro 300W TFX Power Supply provides 300W of power in a compact TFX enclosure measuring 6.89 by 2.56 by 3.35 inches. It features Active PFC with auto-switching and includes an 80mm cooling fan for heat management. If you need a drop-in replacement for small form factor systems like the Dell Inspiron 530s or 531s, this unit matches standard MicroATX slim case requirements.
Pros
- Delivers 300W continuous output with Active PFC auto-switching
- Standard TFX form factor fits MicroATX slim cases
- Equipped with an 80mm cooling fan
- Direct fit for Dell Inspiron 530s and 531s slimline chassis
Cons
- Limited to 300W total capacity
- One-year warranty coverage
Good fit if
- You need a 300W replacement power unit for a Dell Inspiron 530s or 531s.
- You are maintaining or assembling a MicroATX slim PC requiring a TFX unit.
Skip if
- You require more than 300W of total output for higher-demand components.
- You need an ATX or standard SFX form factor rather than TFX.
Verdict: BackPlanePro 300W TFX Power Supply delivers 300W of Active PFC power inside a dedicated TFX chassis. It is designed to match MicroATX slimline builds and serve as a direct replacement for compatible Dell Inspiron desktops.
Apevia 300W TFX Power Supply
Best for: low-draw slim desktop replacements
- Wattage
- 300W
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.75 × 3.23 × 2.5 inches
- Weight
- 2.1 pounds
View on Amazon: Apevia 300W TFX Power Supply Affiliate link
This Apevia 300W TFX power supply provides a compact replacement option for slim desktop systems. It delivers up to 20A across its single +12V rail and includes an 80mm cooling fan for forced-air ventilation. Measuring 6.75 inches long, 3.23 inches wide, and 2.5 inches high, it fits cases requiring standard TFX units. It suits you if you need a basic replacement unit for low-demand office or home PCs.
Pros
- Delivers 20A on the +12V rail
- Equipped with an 80mm cooling fan
- Supports 115V to 230V AC input voltage
- Standard TFX footprint measuring 6.75 x 3.23 x 2.5 inches
Cons
- No 80 PLUS efficiency rating listed
- Total output limited to 300W
Good fit if
- You need a standard TFX replacement unit with 300W of total output.
- You run a low-demand PC build requiring up to 20A on the +12V rail.
Skip if
- You require an 80 PLUS certified power supply.
- You need more than 300W of capacity for dedicated graphics hardware.
Verdict: Apevia 300W TFX Power Supply delivers basic power for compact builds with its 80mm cooling fan and 20A +12V output. It serves as a direct, no-frills option for low-draw desktop systems.
Lenovo ThinkCentre 210W TFX Power Supply
Best for: low-power ThinkCentre desktop replacements
- Wattage
- 210W
- Form Factor
- TFX
- Dimensions
- 1.1 × 9.7 × 6.5 inches
View on Amazon: Lenovo ThinkCentre 210W TFX Power Supply Affiliate link
This Lenovo unit is a TFX form factor power supply tailored for ThinkCentre systems. It delivers 210W of total output and accepts an input range of 100 to 240Vac with ES7 support. If you are servicing a compatible low-power desktop and do not need 300W output, this unit covers your essential hardware requirements.
Pros
- TFX standard form factor
- Wide 100–240Vac input range
- 210W power rating
- ES7 energy standard support
Cons
- Lower 210W output than 300W baseline models
- Cable configuration and connector counts not listed
Good fit if
- You need a replacement power unit for a ThinkCentre PC.
- You run a low-draw setup requiring 210W or less.
- You need a supply operating across 100–240Vac.
Skip if
- You require 300W or more output power.
- You need verified cable counts and connectors before purchasing.
Verdict: Lenovo ThinkCentre 210W TFX Power Supply provides an OEM-targeted 210W option for low-draw ThinkCentre systems using standard 100–240Vac power.
SilverStone 500W Gold TFX Power Supply
Best for: high-demand small-form-factor builds needing 500W
- Wattage
- 500W
- Efficiency Rating
- 80 PLUS Gold
- Modularity
- Fixed Cable
- Fan Size
- 80mm
- Form Factor
- TFX
- Dimensions
- 6.9 × 3.4 × 2.6 inches
View on Amazon: SilverStone 500W Gold TFX Power Supply Affiliate link
This SilverStone unit is a standard TFX form factor power supply delivering 500W continuous output rated at a 50°C operating temperature for 24/7 operation. It features an 80 PLUS Gold efficiency certification, an 80mm cooling fan running at a minimum of 18 dBA, and fixed cabling. It suits you if you need higher wattage and Gold-rated efficiency for a compact TFX case build running continuous workloads.
Pros
- 500W continuous output rated at 50°C for 24/7 operation
- 80 PLUS Gold efficiency certification
- 80mm fan with 18 dBA minimum noise level
- Multiple protection circuitry built in
Cons
- Fixed cables rather than modular connectors
- Longer 6.9-inch depth requires checking small chassis clearances
Good fit if
- You need 500W of continuous power for a small-form-factor TFX system.
- You want 80 PLUS Gold efficiency in a standard TFX chassis.
- You run systems continuously in operating environments up to 50°C.
Skip if
- You need modular cables to simplify cable routing in tight spaces.
- You require a basic 300W replacement for an entry-level OEM machine.
Verdict: SilverStone 500W 80 Plus Gold TFX Power Supply provides high continuous wattage and 80 PLUS Gold efficiency for compact cases that need more power than standard 300W units. Its fixed cabling and 6.9-inch length require adequate clearance in your small-form-factor enclosure.
Be Quiet! TFX Power 3 TFX Power Supply
Best for: compact PC cases requiring standard TFX dimensions
- Form Factor
- TFX
- Dimensions
- 6.89 × 3.35 × 2.56 inches
- Weight
- 3.09 pounds
View on Amazon: Be Quiet! TFX Power 3 TFX Power Supply Affiliate link
The Be Quiet! TFX Power 3 Power Supply is an internal power supply built in the compact TFX form factor. It measures 6.89 inches long, 3.35 inches wide, and 2.56 inches high, weighing 3.09 pounds in a black casing. If you are replacing a failed unit or building inside a slim desktop chassis that accepts standard TFX dimensions, this unit provides a direct physical fit for your system enclosure.
Pros
- Standard TFX form factor
- Compact dimensions: 6.89 x 3.35 x 2.56 inches
- All-black exterior finish
- Total weight of 3.09 pounds
Cons
- Wattage rating not specified in manufacturer data
- Connector types and cable counts not listed
Good fit if
- You need a power supply matching standard TFX mounting dimensions.
- You want a black exterior to blend with your case interior.
Skip if
- You require explicit wattage or efficiency specifications before buying.
- You need a unit shorter than 6.89 inches in length.
Verdict: Be Quiet! TFX Power 3 Power Supply delivers standard TFX sizing for small-form-factor builds. It is a solid physical match if your chassis requires dimensions of 6.89 by 3.35 by 2.56 inches.
MAXROB 250W TFX Power Supply
Best for: low-draw compact desktop replacements
- Wattage
- 250W
- Form Factor
- TFX
View on Amazon: MAXROB 250W TFX Power Supply Affiliate link
This unit from MAXROB delivers 250W of power in a compact TFX form factor. It acts as a dedicated replacement for select low-draw desktop systems and small form factor chassis. If you need a basic TFX unit to swap into an existing build that requires 250W or less, this power supply provides the required form factor without extra bulk.
Pros
- Standard TFX form factor
- 250W continuous output capacity
- Direct replacement profile for slim desktop cases
Cons
- Lower 250W output limit compared to 300W alternatives
- No 80 PLUS efficiency rating listed in specifications
Good fit if
- You need a TFX form factor power supply for a small chassis.
- You run low-power hardware that stays within a 250W ceiling.
Skip if
- You need 300W or higher capacity for your components.
- You require a documented 80 PLUS efficiency certification.
Verdict: MAXROB 250W TFX Power Supply serves as a practical option for compact desktop builds needing modest wattage. It delivers standard TFX dimensions for systems running at or below 250W.
Yosoo Health Gear LCD Power Supply Tester
Best for: testing TFX and ATX power supply outputs
- Form Factor
- TFX
- Display Type
- LCD Display
- Dimensions
- 3.94 × 1.97 × 0.79 inches
- Weight
- 2.82 ounces
View on Amazon: Yosoo Health Gear LCD Power Supply Tester Affiliate link
This device is a compact diagnostic tester rather than a replacement power supply. It reads 20-pin and 24-pin main connectors across TFX, ATX, BTX, and ITX form factors. You get a backlit LCD screen that displays output voltages and Power Good values directly. An integrated buzzer alarms when defects occur. It suits you if you need to verify existing TFX power units before buying or installing replacements.
Pros
- Backlit LCD screen displays voltage groups and PG values
- Automatic buzzer alarms when voltage faults occur
- Supports 20-pin and 24-pin TFX, ATX, BTX, and ITX units
- Tests auxiliary lines including P4, P6, P8, SATA, and IDE
Cons
- Does not supply power to PC hardware
- No numerical LCD voltage readout for SATA, IDE, or PCIe connectors
Good fit if
- You want to troubleshoot an existing TFX unit before ordering a replacement.
- You need direct numerical readouts for main 20-pin or 24-pin rail voltages.
Skip if
- You need an actual power supply to run a PC.
- You require digital voltage readouts on SATA or IDE lines instead of indicator lights.
Verdict: Yosoo Health Gear LCD Power Supply Tester identifies voltage faults across multiple form factors without needing a multimeter. It serves strictly as a diagnostic tool rather than a functional power delivery unit.
Specifications side by side
| Spec | BackPlanePro 300W TFX Power Supply | Apevia 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 | One Year | not specified | not specified | not specified | not specified | not specified | not specified |
| Form Factor | TFX | TFX | TFX | TFX | TFX | TFX | TFX |
| Size | not specified | TFX 300W | 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 | 6.89 × 2.56 × 3.35 inches | 6.75 × 3.23 × 2.5 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 | 3 pounds | 2.1 pounds | not specified | not specified | 3.09 pounds | not specified | 2.82 ounces |
| Color | Grey | Black | not specified | black (lead-free paint) | Black | not specified | Black |
| Model | LYSB00CXAUQJK-CMPTRACCS | TFX-AP300W | 7823903000 | SST-TX500-G | BN323 | FSP250-50SAV(PF) TFX 250W | not specified |
If you also need portable battery capacity for mobile devices, compare specs across anker power bank alternatives.
Frequently asked questions
What is the highest wattage TFX power supply among these alternatives?
The SilverStone 500W Gold TFX Power Supply offers the highest output in this group at 500W. It features an 80 Plus Gold efficiency rating and continuous power delivery in a standard slim chassis. This makes it suitable for higher-draw compact setups compared to standard 300W models. Its dimensions measure 6.9 inches long by 3.4 inches wide by 2.6 inches high.
Can the Be Quiet! TFX Power 3 replace a standard TFX unit?
Yes, the Be Quiet! TFX Power 3 uses standard TFX dimensions to match slimline cases directly. Its chassis measures 6.89 inches in length, 3.35 inches in width, and 2.56 inches in height, which matches standard TFX bay specifications. At 3.09 pounds, it provides a direct physical swap if your enclosure requires a dedicated black TFX power supply.
Which lower-wattage options are available for modest office desktops?
Both the Lenovo ThinkCentre 210W and the MAXROB 250W power supplies serve lower-draw desktop builds. The Lenovo unit is targeted for compatible ThinkCentre systems running on 100 to 240Vac input. The MAXROB unit provides up to 250W of output under model number FSP250-50SAV(PF). You can choose either option when your slim PC does not require a full 300W.
Is the Yosoo Health Gear unit a replacement power supply?
No, the Yosoo Health Gear LCD Power Supply Tester is diagnostic test equipment rather than an operational power supply. It features an integrated LCD display designed to check voltage levels across power units and identify wiring faults. Measuring 3.94 by 1.97 by 0.79 inches, it helps you verify power supply integrity without powering a functional computer.
How do dimensions compare between TFX power supplies?
Most TFX power units share similar profiles, though specific case measurements vary slightly across brands. The Be Quiet! TFX Power 3 measures 6.89 by 3.35 by 2.56 inches, while the SilverStone 500W measures 6.9 by 3.4 by 2.6 inches. In contrast, the Lenovo 210W chassis lists dimensions of 9.7 by 6.5 by 1.1 inches, requiring careful clearance verification before installation.
What efficiency ratings are available among these TFX alternatives?
The SilverStone 500W Gold TFX Power Supply carries an 80 Plus Gold efficiency rating within this lineup. Other models focus on direct OEM specifications or standard power delivery rather than published 80 Plus tiers. When building compact systems that produce internal heat, selecting a model with confirmed efficiency helps manage energy waste inside your small-form-factor case.