DORHEA 80mm 2-Pin DC Fans Review (2026): A Spec-Based Look
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This dorhea 2pcs 12v 3 14in 0 98in review focuses on a basic 80mm x 80mm x 25mm cooling solution. You get two fans designed for direct 12V DC power. The key specs defining this product are its 4500RPM maximum speed and 41CFM airflow. It uses a simple 2-pin connector, making it compatible with standard headers that support direct voltage control. This setup is built for straightforward thermal management in compact spaces or older systems that require specific fan dimensions. The design prioritizes function over complex features, offering a reliable airflow boost for CPU coolers or radiators without requiring additional adapters or controllers.
What stands out
- High speed of 4500RPM for strong airflow
- 41CFM air movement capacity
- Standard 80mm x 80mm x 25mm size
- Simple 2-pin DC connector
- 50,000-hour rated lifespan
Who it fits
Good fit for
You should consider these fans if you need to replace broken units in an older PC case or a specific CPU cooler that requires 80mm fans. The 2-pin connector suits setups where you can plug directly into a fan header that provides 12V. It is also useful for custom water cooling radiators where the 80mm form factor fits your tubing and block layout. If you want maximum airflow at a fixed speed without needing PWM control, this model delivers consistent cooling performance.
Who should skip it
Skip this product if you need PWM fan control for variable speeds. The 2-pin connector does not support motherboard speed regulation, so you cannot adjust noise or airflow dynamically. You should also look elsewhere if you require LED lighting, as this model offers no illumination. Additionally, if your case requires 120mm or 140mm fans, these 80mm units will not fit. Users needing quiet operation below 37.9dBA at high speeds may find this fan too loud for their preference.
Verdict: These fans provide raw, unregulated airflow for specific 80mm needs. They are a practical choice for direct 12V replacement or custom builds requiring simple, high-speed cooling.
Key specs explained
Fan Size: 80mm
The 80mm dimension defines the physical footprint of the fan blades and frame. You need to measure your case or radiator mounting holes to ensure a proper fit. This size is smaller than the common 120mm or 140mm fans, making it suitable for tight spaces or older chassis designs that do not support larger units.
Max Airflow: 41CFM
CFM measures how much air the fan moves per minute. A rating of 41CFM indicates moderate airflow suitable for basic component cooling. You should compare this against larger fans that often move more air at lower speeds. This spec helps you determine if the fan provides enough ventilation for your specific CPU cooler or case layout.
Noise Level: 37.9dBA
This decibel rating indicates the sound pressure level generated by the fan during operation. At 37.9dBA, the fan produces a noticeable hum that may be audible in a quiet room. You should consider this if you prioritize silence. Higher RPM fans generally produce more noise, so this level reflects the trade-off for its high-speed performance.
Max Fan Speed: 4500RPM
RPM stands for revolutions per minute and shows how fast the blades spin. A speed of 4500RPM is quite high for a case fan, indicating strong performance but increased noise. You should check if your motherboard or controller can handle this speed. This spec is crucial for understanding the balance between cooling power and acoustic comfort in your build.
Connector Type: 2pin-ph2.5
The 2-pin connector provides direct power without speed control signals. The ph2.5 refers to the specific pin spacing, which you must match with your power source. Unlike 3-pin or 4-pin fans, you cannot adjust speed via software. You should verify your wiring setup before purchase to ensure compatibility with your power supply or controller.
Design and build overview
The listing describes this unit as a basic 80mm x 80mm x 25mm cooling solution. You receive two fans in the package. The physical dimensions are listed as 3.15 inches by 3.15 inches with a depth of 0.98 inches. This 8025 form factor is smaller than standard case fans. You must verify your mounting holes or radiator thickness before installation. The compact size allows it to fit into tight spaces where larger fans cannot go.
The listing specifies a 2-pin connector with a 2.5mm pitch. This is a direct DC connection. You will not get speed control from your motherboard headers. The fan runs at a fixed 4500RPM when connected to 12V power. The wiring uses red and black leads for positive and negative connections. This simple setup means you need a power source that matches the 12V rating exactly.
The build is designed for direct current operation. The listing states a working life of up to 50,000 hours at 25 degrees. This suggests a durable brushless motor. The design focuses on raw airflow rather than smart features. You should use this fan for components that need constant cooling, like CPU coolers or radiators. The lack of PWM support keeps the design simple and cost-effective for basic cooling needs.
Setup and everyday use details
Setting up these DORHEA fans involves connecting the included two-terminal connectors directly to a 12V DC power source. Each fan features a 2-pin PH2.5 connector with distinct red and black wires for positive and negative leads. You must ensure your power supply provides the correct rated voltage of 12V to achieve the specified performance. The 0.25A current draw is modest, so standard PC power cables or dedicated 12V adapters can handle the load without issue. This straightforward wiring makes installation simple for basic cooling needs.
In everyday use, these fans are designed to improve airflow in compact spaces. With a maximum speed of 4500RPM, they move 41CFM of air. This high speed generates a noise level of 37.9dBA, which is noticeable but manageable in a dedicated setup. The 25mm depth, or 8025 form factor, allows them to fit into tight areas where larger fans cannot. You can use them to cool CPUs, radiators, or other electronics components. The listing states a working life of up to 50,000 hours at 25 degrees Celsius, suggesting reliable long-term operation for continuous duty. Since they are brushless, they rely on the motor design for durability rather than mechanical bearings that wear out quickly. You should mount them securely to minimize vibration transfer, as the high RPM can cause resonance if not fixed firmly. These fans suit users who need direct, constant airflow for specific components without the complexity of PWM control or RGB lighting. They are purely functional tools for thermal management.
Before you buy these fans
You should verify your motherboard or power supply provides a 12V DC output compatible with this 2-pin PH2.5 connector. These fans lack PWM or RPM control headers, so you cannot adjust speed via software. You will need a separate fan controller or a direct power connection from a Molex or SATA adapter if your board lacks exposed 12V pins. The listed lifespan of 50,000 hours at 25 degrees suggests durability, but high-speed operation generates heat. Keep vents clear to maintain airflow. This unit suits basic cooling needs where precise speed control is unnecessary. It fits well alongside other 80mm options for small form factor builds or radiator cooling. Check your case dimensions carefully, as the 80mm footprint is smaller than standard 120mm fans. Ensure your mounting holes align with the 80x80mm pattern. These fans are a straightforward solution for direct power applications without complex wiring.
Check before you buy
- Confirm your power source outputs 12V DC
- Verify mounting holes match the 80mm pattern
- Check if you need a fan controller
- Ensure space fits the 80x80x25mm size
The product at a glance
DORHEA 80mm 2-Pin DC Fans (2-Pack)
Best for: Direct 12V case and radiator cooling
- Fan Size
- 80mm
- Max Fan Speed
- 4500RPM
- Max Airflow
- 41CFM
- Noise Level
- 37.9dBA
- Connector Type
- 2pin-ph2.5
- Compatible Device
- Radiator, CPU Cooler
View on Amazon: DORHEA 80mm 2-Pin DC Fans (2-Pack) Affiliate link
This DORHEA 80mm fan offers 41CFM airflow at 4500RPM. It uses a 2-pin connector for direct 12V power. The unit runs at 37.9dBA and lasts up to 50,000 hours. You get two fans per package. This setup suits users needing basic case or radiator cooling without complex wiring.
Pros
- High 4500RPM speed for strong airflow
- Direct 2-pin power connection
- 41CFM air movement capacity
- 50,000-hour rated lifespan
Cons
- No PWM speed control
- 37.9dBA noise level is moderate
- Requires 12V power source
Good fit if
- You need direct 12V power
- You are cooling a radiator
- You want a simple 2-pin setup
Skip if
- You need variable speed control
- You require quiet operation
- You have only 5V headers
Verdict: DORHEA 80mm 2-Pin DC Fan delivers steady airflow for basic cooling tasks. It fits users who want simple, direct power connections for case or radiator ventilation.
Specifications side by side
| Spec | DORHEA 80mm 2-Pin DC Fans (2-Pack) |
|---|---|
| Fan Size | 80mm |
| Max Fan Speed | 4500RPM |
| Max Airflow | 41CFM |
| Noise Level | 37.9dBA |
| Connector Type | 2pin-ph2.5 |
| Compatible Device | Radiator, CPU Cooler |
| Width | 0.98 inches |
| Height | 3.15 inches |
| Color | 2pcs 12V 2pin |
| Model | D15779-1 |
Frequently asked questions
What size case or radiator do these fans fit?
These fans measure 80mm by 80mm with a depth of 0.98 inches. You should check your chassis or radiator mounting holes to ensure they align with this 8025 form factor. This size is smaller than standard 120mm or 140mm options, making it suitable for compact builds or specific radiator slots that require smaller dimensions.
How do I connect the DORHEA 80mm fans to power?
You connect them using the included 2-pin PH2.5 connectors. Each fan has distinct red and black wires for positive and negative leads. You must attach these directly to a 12V DC power source. This setup requires no motherboard headers or complex wiring, offering a straightforward connection for basic ventilation needs.
Can I control the speed of these fans with software?
No, you cannot adjust the speed via software. These fans lack PWM or RPM control headers. They run at a fixed maximum speed determined by the 12V input. You will need a separate fan controller or resistor if you want to lower the noise or airflow, as the fans themselves do not support variable speed commands.
What is the airflow capacity of this 80mm fan?
The maximum airflow is 41CFM. This rating indicates the volume of air moved per minute at the highest speed. While this provides steady cooling for basic tasks, it is lower than larger 120mm or 140mm fans. You should expect consistent ventilation rather than high-volume air movement for intensive thermal management.
Are these fans suitable for CPU coolers?
Yes, the product data lists CPU Coolers as a compatible device. You can use them for direct 12V case and radiator cooling applications. The 80mm size allows them to fit into smaller heatsink arrays or compact chassis. Just ensure your power source provides the correct 12V DC output for the 2-pin connector.
What is included in the package?
You receive two fans in the package. The listing specifies a 2-pack configuration. Each unit comes with its own 2-pin PH2.5 connector with red and black wires. You do not need to purchase additional cables for basic 12V DC connection, though you may need adapters depending on your power supply type.