Noctua NF-A4x20 PWM vs Thermalright TL-M12QR-S X3 Wireless Splicing Reverse Case Fan-120mm Quiet
Updated August 2026 — The Noctua NF-A4x20 PWM excels in compactness and noise levels, while the Thermalright TL-M12QR-S X3 offers better aesthetics and airflow for larger cases.
The Noctua NF-A4x20 PWM excels in compactness and noise levels, while the Thermalright TL-M12QR-S X3 offers better aesthetics and airflow for larger cases.
Why Noctua NF-A4x20 PWM is better
Compact Size
Ideal for tight spaces with 40x40x20 mm dimensions
Lower Noise
Operates at a maximum of 14.9 dB(A)
Higher RPM
Reaches up to 5000 RPM for superior cooling
Why Thermalright TL-M12QR-S X3 Wireless Splicing Reverse Case Fan-120mm Quiet is better
Larger Size
120mm size suitable for standard cases
ARGB Lighting
Features attractive ARGB lighting effects
Decent Airflow
Provides 47.6 CFM airflow for larger setups
Overall score
Specifications
| Spec | Noctua NF-A4x20 PWM | Thermalright TL-M12QR-S X3 Wireless Splicing Reverse Case Fan-120mm Quiet |
|---|---|---|
| Brand | Noctua | Thermalright |
| Price | £18.40 | £20.59 |
| PWM Control | Yes | Yes |
| Vibration Dampening | Yes | Yes |
| Lighting | No | ARGB |
Dimension comparison
Overview of the Fans
When it comes to cooling solutions, the Noctua NF-A4x20 PWM and the Thermalright TL-M12QR-S X3 Wireless Splicing Reverse Case Fan are two notable options. The Noctua fan is specifically designed for compact spaces with its 40x40x20 mm size, while the Thermalright fan offers a larger 120mm size that caters to standard cases. Each fan is engineered with unique characteristics aimed at delivering efficient cooling while maintaining low noise levels. Pricewise, the Noctua fan is slightly more affordable at £18.40 compared to the Thermalright's £20.59.
Design and Build Quality
The design of the Noctua NF-A4x20 PWM focuses on maximising airflow in constrained environments, such as 1U servers or network devices. Its award-winning A-series design incorporates Flow Acceleration Channels, enhancing airflow while keeping noise to a minimum at just 14.9 dB(A). The Thermalright TL-M12QR-S X3, on the other hand, features a 7-blade design optimised for airflow, achieving a maximum speed of 1500 RPM with a noise level of 23.2 dB(A). While both fans boast solid construction, the Noctua’s design is particularly suited for smaller applications, whereas the Thermalright excels in larger builds with its quiet yet effective performance.
Performance Metrics
In terms of performance, the Noctua NF-A4x20 PWM reaches a maximum speed of 5000 RPM, which is significantly higher than the Thermalright's 1500 RPM. This higher RPM allows the Noctua to deliver more cooling power, making it ideal for scenarios where space is at a premium. However, the Thermalright compensates with a respectable airflow rating of 47.6 CFM, which is beneficial for maintaining optimal temperatures in standard cases. While the Noctua offers superior speed, the Thermalright provides a balanced performance with an effective cooling solution for larger setups.
Noise Levels
Noise levels are a critical factor when selecting a cooling fan. The Noctua NF-A4x20 PWM operates at a maximum of 14.9 dB(A), making it exceptionally quiet, especially for its size. This is a significant advantage for users looking for silent operation in sensitive environments. In contrast, the Thermalright TL-M12QR-S X3 operates at a maximum noise level of 23.2 dB(A), which is still relatively quiet but noticeably louder than the Noctua. If noise reduction is your primary concern, the Noctua clearly stands out as the better option.
Installation and Compatibility
Both fans offer straightforward installation processes, but they cater to different needs due to their size and intended use. The Noctua NF-A4x20 PWM comes with anti-vibration mounts and screws, making it easy to fit into tight spaces. Its 4-pin PWM design allows for automatic speed control via compatible headers, adding to its ease of use. The Thermalright TL-M12QR-S X3 also features a 4-pin PWM connection, but its larger size means it is best suited for standard cases rather than compact environments. Additionally, the Thermalright includes a wireless splicing feature that simplifies cable management, making it easier to achieve a clean build.
Aesthetic Appeal
When it comes to aesthetics, the Thermalright TL-M12QR-S X3 has the edge with its ARGB lighting effects. The fan features a segmented LED light strip that enhances its visual appeal, creating a striking look in any build. This can be particularly appealing for users who enjoy custom lighting setups. Meanwhile, the Noctua NF-A4x20 PWM focuses more on functional design rather than visual flair, although it does maintain a professional and sleek appearance. If lighting is a key factor for you, the Thermalright fan will likely meet your expectations.
Price Comparison
The pricing of both fans reflects their design and intended uses. The Noctua NF-A4x20 PWM is priced at £18.40, making it a cost-effective choice for those needing a reliable fan for small spaces. In contrast, the Thermalright TL-M12QR-S X3 is slightly more expensive at £20.59, which can be justified by its larger size and additional features such as ARGB lighting. Ultimately, the choice may come down to specific needs; if you require a compact fan, the Noctua is the more economical option.
Which should you buy?
Choosing between the Noctua NF-A4x20 PWM and the Thermalright TL-M12QR-S X3 depends on your specific requirements. If you need a compact, ultra-quiet fan for tight spaces, the Noctua is the superior choice, with its remarkable noise levels and high RPM performance. However, if you're looking for a larger fan with visual appeal and decent airflow for a standard case, the Thermalright is an excellent option, particularly with its stylish ARGB lighting. Ultimately, your decision should align with your cooling needs, case size, and aesthetic preferences.
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