Noctua NF-A4x20 PWM vs Thermalright Assassin X120 SE ARGB CPU Air Cooler

Overview of the Noctua NF-A4x20 PWM and Thermalright Assassin X120 SE ARGB

The Noctua NF-A4x20 PWM is a premium quiet fan priced at £18.40, while the Thermalright Assassin X120 SE ARGB CPU Air Cooler costs £16.29. The price difference is modest, but both products cater to distinct cooling needs and environments. Understanding their unique features can help you decide which is more suitable for your setup.

Design and Build Quality

The Noctua NF-A4x20 PWM features an award-winning A-series design with a size of 40x40x20 mm. This compact fan is ideal for 1U servers or devices like routers and NAS. It boasts a maximum RPM of 5000, delivering efficient cooling with a noise level of just 14.9 dB(A). In contrast, the Thermalright Assassin X120 SE ARGB measures 120x71x148 mm and weighs 0.63 kg, making it more suitable for traditional desktop cases. Its aluminium heat sink and metal fasteners ensure a robust construction ideal for both Intel and AMD platforms.

Cooling Performance

In terms of cooling performance, the Noctua NF-A4x20 PWM excels with its max RPM of 5000, designed to cater to high-demand environments while maintaining low noise levels. The Thermalright Assassin X120 SE ARGB, however, offers a maximum fan speed of 1550 RPM, which is significantly lower. Despite this, its larger size and 66.17 CFM airflow capability enable it to manage heat effectively in standard desktop setups, albeit with a maximum noise level of 25.6 dB(A).

Noise Levels

Noise levels are crucial for users seeking a quiet computing environment. The Noctua NF-A4x20 PWM operates at a remarkable maximum noise level of 14.9 dB(A), making it nearly inaudible. This fan is particularly suited for scenarios where silence is paramount. On the other hand, the Thermalright Assassin X120 SE ARGB, while still relatively quiet, has a higher noise level of 25.6 dB(A). For users who prioritise almost silent operation, the Noctua clearly stands out here.

Installation and Compatibility

The installation process varies between the two models due to their design and intended use. The Noctua NF-A4x20 PWM comes with anti-vibration mounts, fan screws, and a comprehensive adaptor set, facilitating easy integration into various systems. This fan's versatility allows it to replace existing fans in compact setups. The Thermalright Assassin X120 SE ARGB supports multiple CPU socket types, including Intel’s LGA 1700 and AMD’s AM5, and includes specific mounting plates, which simplifies installation for users building or upgrading standard desktop systems.

Longevity and Durability

Both products are designed for longevity, but they employ different engineering techniques. The Noctua NF-A4x20 PWM boasts a mean time to failure (MTTF) of over 150,000 hours, indicating exceptional durability. In comparison, the Thermalright Assassin X120 SE ARGB utilises S-FDB bearings that provide a service life of up to 20,000 hours. While both products are built to last, the Noctua’s extended MTTF offers greater peace of mind for users looking for long-term reliability.

Aesthetics and Features

The aesthetic appeal of a cooling solution can be significant, especially for those with transparent cases. The Thermalright Assassin X120 SE ARGB features colourful ARGB lighting, adding visual flair to your build. This can enhance the overall look of a gaming or custom PC setup. In contrast, the Noctua NF-A4x20 PWM is more utilitarian in appearance, focusing on performance over aesthetics, which may appeal more to users prioritising function over form.

Price Consideration

With the Noctua NF-A4x20 PWM priced at £18.40 and the Thermalright Assassin X120 SE ARGB at £16.29, there is a slight cost difference. The Noctua is more expensive, but its superior noise performance and longer lifespan may justify the price for users needing a quiet solution. Meanwhile, the Thermalright offers good value for those needing decent cooling performance without the higher cost, particularly in standard desktop configurations.

Which should you buy?

Choosing between the Noctua NF-A4x20 PWM and the Thermalright Assassin X120 SE ARGB depends on your specific needs. If you require a compact, ultra-quiet fan for a confined space or server use, the Noctua is the clear winner. It excels in noise levels and longevity. However, if you’re building a desktop setup and want a visually appealing cooler with solid performance and good compatibility, the Thermalright is a compelling choice at a lower price. Ultimately, your decision should align with your cooling demands and aesthetic preferences.