Apevia vs Seasonic PC Power Supplies: Which Brand Fits You?
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When you compare apevia vs seasonic PC power supply options, you see two 300W units built for small form factor cases. Both deliver the same wattage, but they serve different needs. The Apevia model focuses on basic TFX compatibility with standard protections. The Seasonic unit targets higher efficiency and stricter compliance standards. Your choice depends on whether you prioritize certified efficiency or simple form factor fit.
Key differences
| Aspect | Apevia 300W TFX Power Supply | Seasonic 300W Flex ATX Gold Power Supply |
|---|---|---|
| Efficiency Rating | not listed | 80 PLUS Gold |
| Form Factor | TFX | Flex ATX |
| Power Factor Correction | not listed | Active PFC |
| ATX Version | not listed | ATX 12 V v 2 31 |
Which one should you choose?
Choose Apevia 300W TFX Power Supply if
- You need a standard TFX form factor for your specific case.
- You require a unit with a listed 80mm fan for airflow.
- You want a black power supply that matches standard chassis colors.
Choose Seasonic 300W Flex ATX Gold Power Supply if
- You want 80 PLUS Gold efficiency for lower heat and power waste.
- You need Active PFC for stable performance across voltage ranges.
- You require compliance with ATX 12 V v 2 31 and EPS 12 V standards.
Verdict: The Seasonic unit offers superior efficiency and modern compliance features, making it better for performance-oriented builds. The Apevia model is a straightforward choice if your case strictly requires the TFX footprint. Choose based on whether efficiency ratings or physical form factor matter more to your system.
Efficiency and Form Factor Comparison
Efficiency Rating
The Seasonic SSP-300SUG carries an 80 PLUS Gold certification, which means it achieves up to 90% efficiency at 50% load on 115V AC input. This high efficiency reduces wasted energy as heat and lowers electricity costs over time. The Apevia TFX-AP300W does not list an 80 PLUS rating in its specifications. Without a certified rating, you cannot verify how much power the Apevia unit wastes during operation. Higher efficiency is generally preferred for stable performance and cooler internal temperatures. Seasonic wins this round due to its verified efficiency standard.
Form Factor
You need to check your case compatibility carefully. The Apevia TFX-AP300W is a TFX form factor unit, measuring 3.23 inches wide, 2.5 inches high, and 6.75 inches long. The Seasonic SSP-300SUG is described as a Flex ATX unit. While TFX and Flex ATX are physically similar, they are not always interchangeable in every small case. TFX units often fit into Flex ATX slots, but Flex ATX units may not fit all TFX mounts. The Apevia provides exact dimensions for precise fitting. This is a tie, as both serve small form factor builds, but you must verify your specific case support.
Voltage Regulation
Voltage stability is critical for component longevity. The Apevia TFX-AP300W specifies a 5% tolerance for its +5V, +3.3V, and +12V outputs. This means the voltage can fluctuate by up to 5% from the nominal value under load. The Seasonic SSP-300SUG does not list specific voltage tolerance percentages in its provided data. Standard industry tolerances are often tighter, but without explicit data, you cannot compare them directly. The Apevia offers clear specifications for voltage stability. Seasonic lacks published tolerance data. This is a tie based on available information.
Power Factor Correction
Power Factor Correction (PFC) improves how effectively the power supply draws power from the wall. The Seasonic SSP-300SUG features Active PFC. Active PFC helps maintain a high power factor, reduces strain on the electrical grid, and often provides better performance across a wider input voltage range. The Apevia TFX-AP300W does not mention Active PFC in its features. It lists input voltage ranges but omits PFC type. Active PFC is a valuable feature for efficiency and compatibility. Seasonic wins this round due to the inclusion of Active PFC technology.
ATX Version
The Seasonic SSP-300SUG complies with ATX 12V v2.31 and EPS 12V standards. This ensures compatibility with modern motherboard specifications and safety protocols defined by these versions. The Apevia TFX-AP300W is labeled as a Standard 300W Flex ATX Power Supply but does not specify a version number like v2.31. Newer ATX versions often include updated protection and signaling features. The Seasonic unit offers explicit compliance with a recent standard. Apevia lacks specific version data. Seasonic wins this round for clear standard compliance.
Which Power Supply Fits Your Build
Users needing standard TFX form factor
The Apevia TFX-AP300W is built specifically for TFX cases. It measures 3.23 by 2.5 by 6.75 inches, fitting compact builds that require this specific shape. You get 300 watts with standard protections. This unit uses an 80mm fan for airflow. It is a straightforward choice for basic small form factor systems.
Buyers prioritizing high efficiency and PFC
The Seasonic SSP-300SUG offers 80 PLUS Gold efficiency, reaching up to 90% efficiency at 50% load. It includes Active PFC for better power factor correction. This unit meets ATX 12V v2.31 and EPS 12V standards. You get industrial-grade compliance and reduced heat waste. It is ideal for efficient, compliant builds.
Those needing specific voltage outputs
The Apevia unit lists specific output rails for precise component planning. It provides +3.3V at 12A, +5V at 12A, and +12V at 20A. Tolerance is kept within 5% for key voltages. You also get -12V at 0.3A and +5VSB at 2.5A. This detailed breakdown helps you match power needs exactly.
The products compared
Apevia 300W TFX Power Supply
Best for: Small form factor builds
- 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
The Apevia TFX-AP300W is a 300W TFX power supply designed for small form factor builds. It features an 80mm fan for forced air ventilation and supports 115-230V AC input. The unit provides specific output rails, including 12V at 20A. It measures 6.75 inches in length and weighs 2.1 pounds. This compact unit suits users needing a reliable TFX PSU for tight cases.
Pros
- 300W output capacity
- Compact TFX form factor
- 80mm fan for cooling
- Supports 115-230V AC input
Cons
- Smaller 80mm fan size
- Lower 300W wattage
- No active noise cancellation
Good fit if
- You need a TFX power supply
- You have a small form factor case
- You require 300W for your build
Skip if
- You need more than 300W
- You require a larger ATX form factor
- You want a 120mm fan
Verdict: Apevia TFX 300W 80mm Fan fits users who need a compact TFX unit with 300W output. It is suitable for small cases where space is limited.
Seasonic 300W Flex ATX Gold Power Supply
Best for: compact builds needing high efficiency and safety
- Wattage
- 300W
- Efficiency Rating
- 80 PLUS Gold
- ATX Version
- ATX 12 V v 2 31
- Power Factor Correction
- Active PFC
View on Amazon: Seasonic 300W Flex ATX Gold Power Supply Affiliate link
The Seasonic SSP-300SUG is a 300W Flex ATX power supply built for small form factor builds. It carries an 80 PLUS Gold efficiency rating, reaching up to 90% efficiency at 50% load on 115 V AC input. The unit includes Active PFC and meets ATX 12 V v2.31 standards. It is designed for users who need reliable industrial-grade protection in a compact space.
Pros
- 80 PLUS Gold efficiency rating for high power savings
- Active PFC circuit design for stable power delivery
- Compliant with ATX 12 V v2.31 and EPS 12 V standards
- Includes comprehensive DC to DC converter protection features
Cons
- Limited to 300W output, restricting high-power component upgrades
- Flex ATX form factor limits compatibility with standard cases
- 80mm fan size may produce more noise under heavy load
Good fit if
- You are building a compact SFF PC with low power needs
- You require high efficiency to reduce heat and electricity use
- You need industrial-grade safety and EMI protection standards
Skip if
- You need more than 300W of total power
- Your case only supports standard ATX or SFX power supplies
- You plan to install high-end GPUs that exceed this wattage
Verdict: Seasonic 300W Flex ATX Gold PSU is a solid choice for compact systems requiring high efficiency and strict safety compliance. It fits users prioritizing power savings and reliability in small form factor builds.
Specifications side by side
| Spec | Apevia 300W TFX Power Supply | Seasonic 300W Flex ATX Gold Power Supply |
|---|---|---|
| Wattage | 300W | 300W |
| Efficiency Rating | not stated | 80 PLUS Gold |
| ATX Version | not stated | ATX 12 V v 2 31 |
| Fan Size | 80mm | not stated |
| Form Factor | TFX | not stated |
| Power Factor Correction | not stated | Active PFC |
| Dimensions | 6.75 × 3.23 × 2.5 inches | not stated |
| Weight | 2.1 pounds | not stated |
| Size | TFX 300W | not stated |
| Color | Black | Multicolor |
| Model | TFX-AP300W | SSP-300SUG |
Frequently asked questions
Is Apevia a good brand for power supplies?
Apevia offers budget-friendly options for specific form factors. The Apevia TFX-AP300W is designed for small form factor builds. It provides 300 watts of power in a compact TFX chassis. This unit suits users who need a basic, space-saving solution without premium efficiency ratings.
Does Seasonic make small power supplies?
Yes, Seasonic produces compact units like the SSP-300SUG. This model is a 300W Flex ATX power supply. It is ideal for compact builds that require high efficiency. The unit features 80 PLUS Gold certification, ensuring reliable performance and strict safety compliance for small systems.
What is the difference between TFX and Flex ATX?
The Apevia unit uses the TFX form factor, measuring 3.23 by 2.5 by 6.75 inches. The Seasonic unit uses the Flex ATX standard. While both are compact, the physical dimensions and mounting points differ. You must check your case compatibility before choosing between these specific shapes.
Which PSU is more efficient, Apevia or Seasonic?
The Seasonic SSP-300SUG is more efficient. It holds an 80 PLUS Gold certification, reaching up to 90% efficiency at 50% load on 115V input. The Apevia TFX-AP300W does not list an efficiency rating in its specifications. Higher efficiency reduces wasted energy and heat generation.
Can I use the Apevia 300W in any small case?
No, it requires a case that supports the TFX form factor. The Apevia TFX-AP300W has specific dimensions of 3.23 inches wide, 2.5 inches high, and 6.75 inches long. It weighs 2.1 pounds. Ensure your chassis explicitly lists TFX compatibility to fit this unit correctly.
Does the Seasonic 300W have active PFC?
Yes, the Seasonic SSP-300SUG includes Active Power Factor Correction. This feature helps improve power usage efficiency and reduces strain on the electrical grid. It is a valuable specification for users prioritizing power savings and reliability in their compact system builds.
Is 300 watts enough for a small PC build?
300 watts is sufficient for low-power small form factor builds. Both the Apevia and Seasonic units provide exactly 300 watts. This output suits systems with integrated graphics or low-power CPUs. It is not suitable for high-end gaming rigs or workstations requiring significant power draw.