DORHEA 80mm 2-Pin DC Fans or DORHEA 30mm Pi Fan 4-Pack? Which DORHEA Model to Buy
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You are looking at dorhea 80mm 2 pin DC fans vs 30mm pi fan 4 pack. Both are brushless cooling fans from the same brand. They share a focus on component temperature management. The main difference lies in their physical dimensions and target hardware. One is a larger 80mm unit for general PC cases. The other is a tiny 30mm fan designed specifically for Raspberry Pi boards. Your choice depends on the device you need to cool.
Key differences
| Aspect | DORHEA 80mm 2-Pin DC Fans (2-Pack) | DORHEA 30mm Pi Fan 4-Pack |
|---|---|---|
| Fan Size | 80mm | 30mm |
| Airflow | 41CFM | not listed |
| Noise Level | 37.9dBA | 15.92dBA |
| Connector Type | 2pin-ph2.5 | Separating two-terminal interface |
| Max Fan Speed | 4500RPM | not listed |
| Compatible Device | Radiator, CPU Cooler | Raspberry Pi |
Which one should you choose?
Choose DORHEA 80mm 2-Pin DC Fans (2-Pack) if
- You need to cool a standard PC case or CPU radiator
- You require higher airflow at 41CFM
- You want a 50,000-hour lifespan
Choose DORHEA 30mm Pi Fan 4-Pack if
- You are building or maintaining a Raspberry Pi system
- You need ultra-quiet operation at 15.92dBA
- You require a dual-speed interface for 3.3V or 5V
Verdict: Choose the 80mm fans if you are cooling a traditional computer case or CPU cooler. Select the 30mm Pi fan if you are working with Raspberry Pi boards or need minimal noise. The specs show they serve completely different hardware niches.
DORHEA 80mm vs 30mm Pi Fan
Physical dimensions
The DORHEA 80mm 2-Pin DC Fans measure 80mm by 80mm by 25mm. These are standard computer case fans designed for larger airflow paths. In contrast, the DORHEA 30mm Pi Fan 4-Pack is tiny, measuring 30mm by 30mm by 7mm. This small form factor is built specifically for compact single-board computers like the Raspberry Pi. You must choose the size that matches your hardware. The 80mm fan will not fit a Pi case, and the 30mm fan is too small for a PC chassis. The physical footprint is the first and most critical decision point for your build.
Acoustic performance
Noise levels differ significantly between these two models. The DORHEA 80mm 2-Pin DC Fans operate at 37.9 dBA. This level is audible and typical for high-speed 80mm fans moving substantial air. The DORHEA 30mm Pi Fan 4-Pack is much quieter, running at only 15.92 dBA. This ultra-quiet performance is ideal for sensitive environments or quiet computing setups where sound matters. If you are building a silent PC or a bedroom server, the lower decibel rating of the 30mm fan is a clear advantage. The 80mm fan is louder due to its higher speed and larger blade area.
Airflow capacity
Air movement is measured in cubic feet per minute (CFM). The DORHEA 80mm 2-Pin DC Fans provide 41 CFM of airflow. This is necessary to cool larger components like CPUs or radiators in a standard PC case. The specifications for the DORHEA 30mm Pi Fan 4-Pack do not list an airflow rating. However, its small 30mm size and low speed indicate it moves very little air compared to the 80mm model. You need the 80mm fan for effective cooling in a desktop computer. The 30mm fan is sufficient only for the small heat loads of a Raspberry Pi.
Power and speed
The DORHEA 80mm 2-Pin DC Fans run on DC 12V with a rated current of 0.25A. They spin at a maximum speed of 4500 RPM. This high speed generates the necessary pressure and volume for PC cooling. The DORHEA 30mm Pi Fan 4-Pack supports dual voltage modes at 3.3V and 5V DC. It uses a unique separating connector for this flexibility. The 30mm fan does not list a specific RPM, but its lower power requirements suggest a slower rotation. The 12V 80mm fan is designed for direct motherboard or power supply connections in PCs, while the 30mm fan adapts to various low-voltage board outputs.
Hardware compatibility
Compatibility determines which fan fits your project. The DORHEA 80mm 2-Pin DC Fans are compatible with PC computer cases, CPU coolers, and radiators. They are standard replacements for older PC chassis fans. The DORHEA 30mm Pi Fan 4-Pack is explicitly compatible with Raspberry Pi models B, B+, A+, 2, 3, 4, and Zero. It also fits RetroFlag NESPI Cases and other robotic development boards. You cannot use the 80mm fan for a Raspberry Pi, and the 30mm fan is useless for a standard PC. Match the fan to your specific device type.
Choose based on your hardware size
Building a standard PC case
You need the 80mm size to fit standard computer cases or CPU coolers. This fan delivers 41 CFM of airflow to move heat away from components. It runs at 4500 RPM and connects via a simple 2-pin DC interface. This model is designed for larger airflow paths in desktop builds.
Cooling a Raspberry Pi
You require a 30mm fan for compact single-board computers like the Raspberry Pi 4. This tiny fan operates at a quiet 15.92 dBA. It supports dual speed modes via a unique terminal interface for 3.3V or 5V power. It fits standard Pi cases and keeps the processor cool without noise.
Prioritizing quiet operation
You want minimal noise from your cooling setup. The 30mm Pi Fan runs at just 15.92 dBA, which is significantly quieter than the 80mm model. This low noise level is ideal for quiet workspaces or small form factor builds where sound matters. The 30mm size fits tight spaces perfectly.
The products compared
DORHEA 80mm 2-Pin DC Fans (2-Pack)
Best for: Standard 80mm PC case 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 unit is an 80mm x 80mm x 25mm brushless fan designed for PC cases and CPU coolers. It runs on 12V DC with a 2-pin connector. The motor spins at 4500 RPM, moving 41 CFM of air. Noise output is 37.9 dBA. You get two fans per pack. It suits builds needing standard 80mm intake or exhaust cooling.
Pros
- 80mm x 80mm x 25mm size fits standard mounts
- 4500 RPM max speed for strong airflow
- 41 CFM air movement per fan
- 2-pin connector for basic power control
Cons
- 37.9 dBA noise level is louder than quieter models
- Fixed speed with no PWM or voltage control
- Only includes two fans per pack
Good fit if
- You need 80mm fans for a PC case or radiator
- You require a simple 2-pin DC connection
- You want a 25mm thick fan for high airflow
Skip if
- You need PWM speed control for quiet operation
- You require 4-pin connectors for motherboard control
- You want a 4-pack for multiple slots
Verdict: DORHEA 80mm 2-Pin DC Fan delivers high airflow at 41 CFM for standard 80mm slots. It fits users who need simple 2-pin power and do not require variable speed control.
DORHEA 30mm Pi Fan 4-Pack
Best for: Silent cooling in tight Raspberry Pi cases
- Fan Size
- 30mm
- Noise Level
- 15.92dBA
- Dimensions
- 1.18 × 0.3 × 1.18 inches
- Weight
- 3.53 ounces
View on Amazon: DORHEA 30mm Pi Fan 4-Pack Affiliate link
This pack includes four 30x30x7mm brushless fans designed for Raspberry Pi cooling. It runs at a quiet 15.92dBA and supports dual speed modes via separate 3.3V and 5V DC terminals. The compact size fits standard cases, including RetroFlag NESPI. You get a reliable, low-noise solution for keeping your Pi Zero, 3, or 4 model B cool during operation.
Pros
- Ultra-compact 30x30x7mm size fits tight spaces
- Very quiet operation at 15.92dBA
- Dual speed support for 3.3V and 5V
- Includes four fans for comprehensive cooling
Cons
- Small 30mm size offers less airflow than larger fans
- Requires specific wiring for dual speed modes
- 7mm thickness may not fit all deep heatsinks
Good fit if
- You need quiet cooling for a Pi Zero or Pi 4
- You have limited space inside a small case
- You want to run fans at 3.3V or 5V
Skip if
- You need high airflow for heavy workloads
- You prefer standard 2-pin connectors without splitting
- You are cooling a device larger than a Pi
Verdict: DORHEA 30mm Pi Fan 4-Pack is ideal for users prioritizing silence and compactness in Raspberry Pi builds. It fits tight cases well but lacks the raw airflow of larger options.
Specifications side by side
| Spec | DORHEA 80mm 2-Pin DC Fans (2-Pack) | DORHEA 30mm Pi Fan 4-Pack |
|---|---|---|
| Fan Size | 80mm | 30mm |
| Max Fan Speed | 4500RPM | not stated |
| Max Airflow | 41CFM | not stated |
| Noise Level | 37.9dBA | 15.92dBA |
| Connector Type | 2pin-ph2.5 | not stated |
| Compatible Device | Radiator, CPU Cooler | not stated |
| Width | 0.98 inches | not stated |
| Height | 3.15 inches | not stated |
| Dimensions | not stated | 1.18 × 0.3 × 1.18 inches |
| Weight | not stated | 3.53 ounces |
| Color | 2pcs 12V 2pin | Black-4pcs |
| Model | D15779-1 | not stated |
Frequently asked questions
Can the DORHEA 80mm fan fit a Raspberry Pi case?
No. The 80mm fan is designed for standard PC cases and radiators. It is much larger than the 30mm Pi fan. You cannot install the 80mm model in tight Raspberry Pi enclosures. Stick to the 30mm option for single-board computers.
Does the 80mm fan support variable speed control?
No. This model uses a 2-pin DC connector. It does not support PWM or voltage-based speed adjustment. It runs at a fixed 4500 RPM. You get consistent 41 CFM airflow without the ability to change the speed.
Is the 30mm fan suitable for main PC cases?
No. It lacks the raw airflow needed for standard computer chassis. The 30mm model is built for silence and compactness in Raspberry Pi builds. It is too small to move enough air for typical desktop components. Use the 80mm fan instead.
What is the difference between the 2-pin and 4-pin connectors?
The 80mm fan uses a 2-pin DC connector. It plugs directly into power without speed control signals. The 30mm Pi fan data does not list a specific connector type in the provided specs. Check the product listing for its interface details.
Which fan is better for CPU coolers?
The DORHEA 80mm fan is better. It is explicitly compatible with CPU coolers and radiators. It delivers 41 CFM of airflow to handle heat loads. The 30mm Pi fan is too small for effective CPU cooling in standard setups.
Do I need to buy multiple 30mm fans?
Yes. The 30mm option comes in a 4-pack. This allows you to install multiple units in tight spaces. The 80mm version is sold as a 2-pack. Choose the pack size that matches your airflow requirements.
Can I use the 80mm fan for water cooling radiators?
Yes. The 80mm fan is listed as compatible with radiators. Its 41 CFM airflow helps dissipate heat from liquid cooling loops. Ensure your radiator has 80mm mounting holes. The 30mm fan is not suitable for this application.