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ARCTIC P12 Slim PWM PST vs ARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler

Updated August 2026The ARCTIC Liquid Freezer III Pro 240 offers superior cooling performance and features, making it the better choice for high-demand users, while the P12 Slim is ideal for compact builds on a budget.

The ARCTIC Liquid Freezer III Pro 240 offers superior cooling performance and features, making it the better choice for high-demand users, while the P12 Slim is ideal for compact builds on a budget.

Why ARCTIC P12 Slim PWM PST is better

price

P12 Slim is significantly cheaper at £18.90

size

P12 Slim is designed for compact spaces with a height of 15 mm

noise level

P12 Slim operates at a maximum noise level of 0.3 Sone

Why ARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler is better

cooling performance

Liquid Freezer III Pro handles higher thermal loads effectively

advanced features

Includes integrated VRM fan for better heat management

fan technology

P12 PRO fan is quieter and more powerful than P12 Slim

Overall score

ARCTIC P12 Slim PWM PST
70
ARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler
85

Specifications

SpecARCTIC P12 Slim PWM PSTARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler
BrandARCTICARCTIC
TypeFanAIO Cooler
Static Pressure (mmH₂O)1.332.5
InstallationCompactStandard
Target AudienceBudget BuildersEnthusiasts

Dimension comparison

ARCTIC P12 Slim PWM PSTARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler

Overview of the ARCTIC P12 Slim PWM PST

The ARCTIC P12 Slim PWM PST is a compact fan designed to deliver efficient cooling in smaller spaces. Priced at £18.90, it offers a solid performance for its size, with a maximum fan speed of 2100 RPM. This fan is particularly optimised for static pressure, making it suitable for use on heat sinks and radiators where air resistance can be a concern. The slim design, with an installation height of just 15 mm, allows it to fit into small form factor cases, appealing to users with limited space in their builds.

Overview of the ARCTIC Liquid Freezer III Pro 240

In contrast, the ARCTIC Liquid Freezer III Pro 240 is a more advanced cooling solution with a price tag of £56.49. This all-in-one (AIO) CPU cooler features a larger design, optimised for higher performance cooling under demanding workloads. It includes ARCTIC's P12 PRO fan, which is designed to provide more power while remaining quieter, especially at lower speeds. The Liquid Freezer III Pro is particularly well-suited for users looking to overclock their CPUs or run high-performance applications, thanks to its ability to handle significant heat loads.

Cooling Performance Comparison

When it comes to cooling performance, the Liquid Freezer III Pro 240 stands out with its advanced features. The P12 PRO fan not only operates at higher maximum speeds but is also designed to be quieter than the standard P12 Slim, especially when under load. With a focus on efficient heat transfer, the integrated VRM fan reduces temperatures around the voltage converters, enhancing overall reliability. In contrast, while the P12 Slim offers decent static pressure and airflow of 34.51 cfm, it is primarily aimed at delivering effective cooling in compact setups rather than handling extreme thermal loads.

Installation and Compatibility

Installation and compatibility are crucial factors in choosing a cooling solution. The P12 Slim PWM PST's low profile makes it easy to integrate into tight spaces, providing a hassle-free installation for small builds. However, the Liquid Freezer III Pro 240 has a native offset mounting system designed for Intel LGA1851 and LGA1700 sockets, ensuring optimal contact pressure and heat dissipation for a longer CPU life. While the P12 might fit smaller cases, the Liquid Freezer III Pro is designed for those who prioritise performance over compactness, making it suitable for a wider range of builds, especially high-end gaming or workstation setups.

Noise Levels

In terms of noise levels, the P12 Slim PWM PST operates at a maximum noise level of 0.3 Sone, which is relatively quiet for a fan at full speed. This makes it an excellent choice for users who prefer a quieter computing experience. The Liquid Freezer III Pro, with its advanced fan technology, aims to maintain low noise levels even under load, providing higher performance without a significant increase in sound output. While specific noise level metrics for the Liquid Freezer III Pro are not provided, its design suggests that it can perform quietly compared to traditional air coolers, which can be louder when under stress.

Price and Value

The price difference between the two products is significant, with the P12 Slim priced at £18.90 and the Liquid Freezer III Pro at £56.49. This higher cost reflects the advanced technology and features of the Liquid Freezer III Pro, including its AIO design and integrated cooling solutions. For users on a budget or those with less demanding cooling requirements, the P12 Slim offers excellent value. However, for those looking to invest in a high-performance cooling solution, the additional expense of the Liquid Freezer III Pro may be justified by its superior cooling capability and reliability under heavy loads.

Target Audience

The target audience for these two cooling solutions varies significantly. The P12 Slim is ideal for PC builders who require effective cooling in compact builds, making it suitable for home theatre PCs or small form factor gaming rigs. Conversely, the Liquid Freezer III Pro is aimed at enthusiasts and gamers who demand high performance and are willing to invest more for better cooling and reliability. The advanced features cater to those who overclock their CPUs or run resource-intensive applications, highlighting the difference in intended use between the two products.

Which should you buy?

Choosing between the ARCTIC P12 Slim PWM PST and the ARCTIC Liquid Freezer III Pro 240 ultimately depends on your specific needs and budget. If you are looking for an economical, space-saving cooling solution for a smaller build, the P12 Slim is an excellent choice at £18.90. However, if you require superior cooling performance for a high-end CPU setup and are willing to invest £56.49, the Liquid Freezer III Pro offers advanced features that ensure efficient heat management during demanding tasks. Consider your usage patterns and space constraints carefully to make the best choice for your system.

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ARCTIC P12 Slim PWM PST vs ARCTIC Liquid Freezer III Pro 240 - AIO CPU Cooler | versusfinder