Noctua NF-A8 PWM vs Thermalright AXP90-X47 Full Low Profile ITX CPU Air Cooler

Overview of the Noctua NF-A8 PWM and Thermalright AXP90-X47

The Noctua NF-A8 PWM is a premium quiet fan designed for compact PC cases, while the Thermalright AXP90-X47 is a low-profile ITX CPU air cooler. Priced at £24.59, the Noctua fan focuses on silent operation and versatile installation options, whereas the AXP90-X47, at £41.90, offers a more complex cooling solution specifically tailored for CPUs with advanced features.

Design and Build Quality

The Noctua NF-A8 PWM features an 80x80x25 mm form factor, making it ideal for small spaces. It includes advanced acoustic optimisation and flow acceleration channels to enhance cooling performance while maintaining a maximum noise level of just 17.7 dB(A). In contrast, the Thermalright AXP90-X47 boasts a larger footprint of 94.5×95×47 mm, constructed from pure copper which improves oxidation resistance and overall heat dissipation. The AXP90-X47 incorporates a 92mm PWM fan that operates at a maximum speed of 2700 RPM, generating a noise level of 22.4 dB(A). The materials and design suggest that both products are built for durability, but the AXP90-X47 emphasises more on heat dissipation capabilities.

Cooling Performance

The Noctua NF-A8 PWM is designed to provide efficient cooling for compact setups, with a maximum airflow of approximately 62.24 CFM when considering its RPM capabilities. In contrast, the Thermalright AXP90-X47 offers a maximum air volume of 42.58 CFM. However, the AXP90-X47 utilises an AGHP technique with four 6mm heat pipes to maximise cooling efficiency, effectively doubling the cooling effect compared to traditional methods. While the Noctua fan is suitable for general airflow needs, the AXP90-X47 provides a more dedicated CPU cooling solution, showcasing superior performance through its advanced design.

Noise Levels

When noise levels are a concern, the Noctua NF-A8 PWM excels with its maximum noise output of only 17.7 dB(A). This makes it one of the quietest options available for small form factor builds. The Thermalright AXP90-X47, while still relatively quiet, operates at 22.4 dB(A) under load, which is a notable difference. If silence is a critical factor for your build, the Noctua fan is the clear winner in this category, ensuring a peaceful computing environment.

Installation and Compatibility

The Noctua NF-A8 PWM is straightforward to install, featuring anti-vibration mounts and an extension cable for ease of use. Its compact design is compatible with various systems, including HTPCs and NAS devices. On the other hand, the Thermalright AXP90-X47 comes with compatibility for a broader range of CPUs, supporting both Intel (LGA 1700/1851/1150/1151/1155/1156/1200) and AMD (AM4/AM5) sockets. Its low-profile height of just 47mm allows it to fit neatly in small cases. While both products are user-friendly, the AXP90-X47 offers a greater degree of versatility regarding CPU compatibility.

Price and Value

The Noctua NF-A8 PWM is priced at £24.59, making it an affordable choice for users looking for a high-quality fan without breaking the bank. In comparison, the Thermalright AXP90-X47 is priced at £41.90, reflecting its more advanced cooling capabilities and design. While both products provide good value, the Noctua fan offers exceptional performance for its price, particularly for users who require a quiet operation in compact builds. Conversely, the AXP90-X47 justifies its higher price through its dedicated CPU cooling performance and broader compatibility.

Intended Use Cases

The Noctua NF-A8 PWM is ideal for users needing a reliable fan for small form factor builds, such as HTPCs or NAS systems. Its design caters to applications where quiet operation is paramount. The Thermalright AXP90-X47, however, is better suited for users with higher thermal demands, such as gaming or workstation builds. Its ability to handle higher heat loads makes it a preferable choice for those wanting a low-profile CPU cooler that does not compromise on performance.

Which should you buy?

Choosing between the Noctua NF-A8 PWM and the Thermalright AXP90-X47 ultimately depends on your specific needs. If you prioritise silent operation and need a compact fan for general airflow, the Noctua NF-A8 PWM is the best option, costing £24.59. However, if you require a robust cooling solution for your CPU without sacrificing space, the Thermalright AXP90-X47, priced at £41.90, offers superior performance and compatibility. Consider your build requirements and budget to make the most informed decision.