ARCTIC Liquid Freezer III Pro 360 - AIO CPU Cooler vs Noctua NF-A4x20 PWM
Updated August 2026 — The ARCTIC Liquid Freezer III Pro 360 is the superior choice for high-performance cooling, while the Noctua NF-A4x20 PWM excels in quiet operation for compact devices.
The ARCTIC Liquid Freezer III Pro 360 is the superior choice for high-performance cooling, while the Noctua NF-A4x20 PWM excels in quiet operation for compact devices.
Why ARCTIC Liquid Freezer III Pro 360 - AIO CPU Cooler is better
Cooling Performance
ARCTIC offers superior cooling efficiency under load.
Compatibility
ARCTIC supports both Intel and AMD processors.
Integrated Features
ARCTIC includes an integrated VRM fan for enhanced performance.
Why Noctua NF-A4x20 PWM is better
Noise Levels
Noctua operates at a maximum noise level of only 14.9 dB(A).
Price
Noctua is significantly cheaper at £18.40.
Compact Design
Noctua is ideal for tight spaces with its small dimensions.
Overall score
Specifications
| Spec | ARCTIC Liquid Freezer III Pro 360 - AIO CPU Cooler | Noctua NF-A4x20 PWM |
|---|---|---|
| Brand | ARCTIC | Noctua |
| Current Price | £67.49 | £18.40 |
| Fan Type | AIO Cooler | PWM Fan |
| Max Noise | 25 dB(A) | 14.9 dB(A) |
| Compatibility | Intel & AMD | Limited |
Dimension comparison
Overview of the ARCTIC Liquid Freezer III Pro 360 and Noctua NF-A4x20 PWM
When comparing the ARCTIC Liquid Freezer III Pro 360 and the Noctua NF-A4x20 PWM, it's essential to consider their intended applications. The ARCTIC cooler, priced at £67.49, is a robust All-in-One (AIO) solution designed for high-performance CPUs, while the Noctua fan, at £18.40, is tailored for specific use cases in compact environments. Each product offers unique features that cater to different cooling needs.
The ARCTIC Liquid Freezer III Pro 360 is designed for maximum cooling efficiency with advanced features like a native offset mounting system and an integrated VRM fan. In contrast, the Noctua NF-A4x20 PWM focuses on providing quiet operation in smaller devices, making it ideal for 1U servers or network equipment.
Cooling Performance
The ARCTIC Liquid Freezer III Pro 360 is engineered for exceptional cooling performance under load, featuring ARCTIC's P12 PRO FAN, which delivers more power and is quieter compared to its predecessor. This model is particularly effective at dissipating heat, ensuring that your CPU maintains optimal temperatures during intense workloads. The cooling performance is further enhanced by its integrated VRM fan, which cools the voltage converters.
On the other hand, the Noctua NF-A4x20 PWM, while not as powerful as the AIO, excels in quiet operation, achieving a maximum noise level of just 14.9 dB(A). This fan can spin up to 5000 RPM, making it suitable for environments where low noise is paramount, although its cooling capacity is limited compared to the ARCTIC unit.
Design and Build Quality
In terms of design, the ARCTIC Liquid Freezer III Pro 360 boasts a sleek appearance, with a contact frame designed for Intel LGA1851 and LGA1700 sockets. Its design focuses on optimising contact pressure distribution, which not only prolongs CPU life but also enhances heat dissipation efficiency. The integrated cable management system simplifies installation, reducing clutter in the build.
Conversely, the Noctua NF-A4x20 PWM features a compact design that measures 40x40x20 mm, making it ideal for tight spaces. Its award-winning A-series design incorporates Flow Acceleration Channels and an Advanced Acoustic Optimisation frame, which contributes to its quiet performance. The quality materials used in its construction ensure durability and reliability over an impressive lifespan of over 150,000 hours MTTF.
Versatility and Compatibility
The versatility of the ARCTIC Liquid Freezer III Pro 360 is evident in its compatibility with both Intel and AMD processors, making it a suitable choice for a wide range of systems. Its design allows for efficient heat transfer by shifting the cold plate centre towards the CPU hotspot, which is particularly beneficial for high-performance builds.
In contrast, the Noctua NF-A4x20 PWM is specifically designed for smaller applications, such as 1U servers or replacing fans in network devices like routers and NAS systems. Its 4-pin PWM capability allows for automatic speed control, making it adaptable for various use cases while ensuring efficient airflow in compact spaces.
Noise Levels
Noise levels are a significant consideration for many users, especially in quiet environments. The ARCTIC Liquid Freezer III Pro 360, while powerful, can generate noise levels that vary depending on the load and fan speed. However, its P12 PRO FAN is designed to operate quietly, especially under lower speeds, which is a crucial factor for those who need a balance between performance and noise.
The Noctua NF-A4x20 PWM excels in this category, with a maximum noise level of only 14.9 dB(A). This low noise output makes it an attractive option for users who prioritise a silent computing experience, particularly in home or professional environments where noise can be distracting.
Price Comparison
Price is a significant differentiator between these two cooling solutions. The ARCTIC Liquid Freezer III Pro 360 is priced at £67.49, reflecting its advanced technology, higher cooling capacity, and broader compatibility. This investment is justified for users seeking top-tier performance in demanding environments.
In stark contrast, the Noctua NF-A4x20 PWM is priced at just £18.40, making it an affordable option for users who need effective cooling in smaller devices without the need for high-performance capabilities. This lower price point allows users to upgrade or replace fans in multiple devices without a significant financial commitment.
Installation Process
The installation process for the ARCTIC Liquid Freezer III Pro 360 is streamlined by its integrated cable management system, which reduces visible clutter and simplifies setup. The AIO design means users can install the cooler directly onto their CPU without needing additional components, making it user-friendly for both novices and experienced builders.
Conversely, the Noctua NF-A4x20 PWM includes various mounting accessories such as anti-vibration mounts and extension cables, facilitating installation in tight spaces. While it is designed for easy installation, users should ensure compatibility with their specific devices, particularly in terms of space and existing fan headers.
Which should you buy?
Choosing between the ARCTIC Liquid Freezer III Pro 360 and the Noctua NF-A4x20 PWM ultimately depends on your specific cooling needs and budget. If you require a high-performance solution capable of handling demanding tasks, the ARCTIC Liquid Freezer III Pro 360 is the superior choice, offering advanced features and robust cooling capabilities for £67.49. However, if your needs are modest and centred around maintaining low noise levels in compact devices, the Noctua NF-A4x20 PWM, priced at £18.40, is an excellent and economical option. Each product serves its purpose well, catering to different segments of the market.
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