Apevia 300W TFX Power Supply vs Apevia Spirit 700W Power Supply (2026): Key Differences
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You are comparing the apevia tfx ap300w 300w tfx power vs atx sp700 spirit 700w atx. Both units offer standard protections and black casings. They share a 5VSB output of 2.5A. The main difference is form factor and power. The TFX model fits small cases with 300W. The ATX model handles 700W in standard towers. You must match the size and wattage to your build.
Key differences
| Aspect | Apevia 300W TFX Power Supply | Apevia Spirit 700W Power Supply |
|---|---|---|
| Form Factor | TFX | ATX |
| Wattage | 300W | 700W |
| Fan Size | 80mm | 120mm |
| +12V Output | 20A | 53A |
Which one should you choose?
Choose Apevia 300W TFX Power Supply if
- You need a power supply for a small form factor case that requires TFX dimensions.
- Your system components draw no more than 300W total power.
- You are building a compact PC where the 80mm fan fits the chassis airflow.
Choose Apevia Spirit 700W Power Supply if
- You are building a standard ATX tower case that accepts ATX power supplies.
- Your system requires high power for modern CPUs or graphics cards up to 700W.
- You prefer a larger 120mm fan for potentially quieter operation at lower RPMs.
Verdict: The TFX unit suits small builds with low power needs. The ATX Spirit fits standard towers requiring higher wattage. Choose based on your case size and component power draw.
TFX 300W vs Spirit 700W Comparison
Form Factor
The Apevia 300W TFX Power Supply uses a TFX form factor, measuring 6.75 inches in length, 3.23 inches in width, and 2.5 inches in height. This compact size is designed for small form factor cases that require TFX power supplies. In contrast, the Apevia Spirit 700W Power Supply is an ATX unit. It measures 5.9 inches in length, 6.3 inches in width, and 3.4 inches in height. The ATX size is standard for most mid-tower and full-tower cases. You must choose the form factor that matches your case compatibility. The TFX unit wins for small builds, while the ATX unit is better for standard cases.
Power Output
Power capacity is a major difference between these two units. The Apevia 300W TFX Power Supply delivers 300 watts of total power. Its +12V rail provides 20A, which equals 240 watts on that rail. The Apevia Spirit 700W Power Supply delivers 700 watts of total power. Its +12V rail provides 53A, which equals 636 watts on that rail. The Spirit unit offers significantly more power for high-end components. The TFX unit is limited to low-power systems. If you need high wattage, the Spirit unit is the clear choice for desktop gaming or heavy workloads.
Fan Size
Cooling mechanisms differ between the two models. The Apevia 300W TFX Power Supply uses an 80mm fan for forced air ventilation. Smaller fans often run at higher speeds to move the same amount of air. The Apevia Spirit 700W Power Supply uses a 120mm fan. Larger fans can move more air at lower speeds, which may reduce noise levels. The Spirit unit also features auto-thermal control for the fan. The TFX unit does not list thermal control features. The larger fan in the Spirit unit is generally better for cooling and potentially quieter operation.
Connectors
Connectivity options vary significantly. The Apevia Spirit 700W Power Supply includes specific connectors: one 20/24-pin main power connector, one 4+4-pin 12V connector, two 6+2-pin PCIe connectors, four SATA connectors, and four peripheral connectors. The 8-pin CPU and PCIe connectors can be split into 4+4 and 6+2 configurations for compatibility. The Apevia 300W TFX Power Supply data does not list specific connector types or counts. You cannot verify its connectivity options from the provided specs. The Spirit unit offers detailed connector flexibility for modern components.
Voltage Regulation
Voltage stability is important for system reliability. The Apevia 300W TFX Power Supply specifies a 5% tolerance for its 5V, 3.3V, and 12V outputs. This means the voltage can vary by up to 5% from the nominal value. The Apevia Spirit 700W Power Supply data does not list voltage tolerance percentages. It lists output currents but not the allowed variance. Without tolerance data for the Spirit unit, you cannot directly compare regulation precision. Both units list protections, but the TFX unit explicitly states its tolerance. This round is a tie due to incomplete data for one product.
Which Apevia power supply fits you
Small form factor PC builders
You need a TFX form factor for compact cases. This unit measures 6.75 by 3.23 by 2.5 inches. It provides 300W total power with an 80mm fan. The single 12V rail delivers 20A. It fits cases where standard ATX units do not fit. The compact design is essential for tight builds.
Standard ATX desktop users
You require a standard ATX form factor for typical desktop towers. This unit offers 700W of power with a 120mm fan. It supports single 12V output for higher power usage. It includes multiple connectors for CPUs and GPUs. The larger size fits standard cases and provides ample power for general computing tasks.
Users needing high 12V power
You need strong 12V rail performance for modern components. This power supply delivers 53A on the 12V rail. It supports dual or quad-core CPUs effectively. The 700W capacity handles demanding loads better than the 300W alternative. The 120mm fan helps manage heat under sustained high power usage.
The products compared
Apevia 300W TFX Power Supply
Best for: compact TFX cases with low power needs
- 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 TFX-AP300W is a 300W power supply designed for compact builds using the TFX form factor. It measures 6.75 x 3.23 x 2.5 inches and weighs 2.1 pounds. The unit uses an 80mm fan for cooling and supports 115-230V AC input. It provides stable outputs with 5% tolerance on key rails. It fits small cases where standard ATX units do not fit.
Pros
- Compact TFX form factor fits small cases
- 300W total power output
- 5% voltage tolerance on 5V, 3.3V, and 12V rails
- Supports 115-230V AC input
Cons
- Lower 300W wattage limits high-end components
- 80mm fan may be louder than larger fans
- Smaller size restricts airflow compared to ATX
Good fit if
- You need a power supply for a TFX case
- You build a low-power compact PC
- You require 115-230V input flexibility
Skip if
- You need more than 300W for gaming
- You use a standard ATX case
- You prioritize silent operation over size
Verdict: Apevia 300W TFX Power Supply is a solid choice for small form factor builds that do not demand high wattage. It fits users who prioritize compact dimensions over raw power capacity.
Apevia Spirit 700W Power Supply
Best for: Standard ATX builds needing 700W
- Wattage
- 700W
- PCIe Connector Type
- 6+2 pin
- Fan Size
- 120mm
- Form Factor
- ATX
- Dimensions
- 5.9 × 6.3 × 3.4 inches
View on Amazon: Apevia Spirit 700W Power Supply Affiliate link
This Apevia Spirit unit delivers 700W of power through a single 12V rail. It features a 120mm fan and measures 5.9 by 6.3 by 3.4 inches. You get standard ATX connectors, including an 8-pin CPU and two 6+2 pin PCIe cables. It includes comprehensive protection circuits. This is a practical option for standard ATX builds needing solid power delivery.
Pros
- 700W total power output
- Single 12V rail for high power usage
- 120mm auto-thermally controlled fan
- Comprehensive heavy-duty protections
Cons
- Fixed 120mm fan with no speed control
- Non-modular cable management
- Standard ATX form factor limits small cases
Good fit if
- You need a standard ATX power supply
- You want a single 12V rail for CPUs
- You require comprehensive circuit protections
Skip if
- You use a small form factor case
- You need modular cables for clean builds
- You require silent fan operation
Verdict: Apevia Spirit 700W ATX Power Supply fits builders who need reliable power in a standard case. It suits those prioritizing a strong single 12V rail over cable flexibility.
Specifications side by side
| Spec | Apevia 300W TFX Power Supply | Apevia Spirit 700W Power Supply |
|---|---|---|
| Wattage | 300W | 700W |
| PCIe Connector Type | not stated | 6+2 pin |
| Fan Size | 80mm | 120mm |
| Form Factor | TFX | ATX |
| Dimensions | 6.75 × 3.23 × 2.5 inches | 5.9 × 6.3 × 3.4 inches |
| Weight | 2.1 pounds | not stated |
| Size | TFX 300W | not stated |
| Color | Black | Black |
| Model | TFX-AP300W | ATX-SP700 |
Frequently asked questions
Can I install the Apevia 300W TFX in a standard ATX case?
No, you cannot. The Apevia 300W TFX Power Supply uses a TFX form factor. This design is specifically built for compact small form factor cases. It will not fit into standard ATX chassis designed for larger power supplies. You must check your case specifications for TFX compatibility before purchasing.
What are the exact dimensions of the Apevia Spirit 700W?
The Apevia Spirit 700W Power Supply measures 6.3 inches in width, 3.4 inches in height, and 5.9 inches in length. These dimensions follow the standard ATX form factor. You can easily find space for this unit in most mid-tower and full-tower computer cases.
Does the Apevia Spirit 700W have a 120mm fan?
Yes, it does. The Apevia Spirit 700W Power Supply features a 120mm fan. This larger fan size helps manage heat more effectively than smaller fans. It supports the unit’s 700W output in standard ATX builds by providing adequate cooling for internal components.
Is the Apevia 300W TFX suitable for high-end gaming PCs?
No, it is not suitable. This unit provides only 300W of total power. It is designed for compact builds with low power needs. High-end gaming PCs typically require significantly more wattage. You should choose the Spirit 700W model if you need higher power capacity.
What is the weight of the Apevia 300W TFX Power Supply?
The unit weighs 2.1 pounds. This lightweight design helps reduce the overall mass of small form factor builds. The compact size and low weight make it easier to install in tight spaces without adding unnecessary bulk to your chassis.
Can I use the Apevia Spirit 700W for a mini-ITX build?
It depends on your case size. The Spirit 700W uses a standard ATX form factor. Many mini-ITX cases are too small for ATX power supplies. You must verify that your specific case supports ATX units before installing this 700W model.