ARCTIC Liquid Freezer III Pro 240 A-RGB - vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — ARCTIC Liquid Freezer III Pro 240 A-RGB - wins on aesthetics and cooling performa, Thermalright Peerless Assassin 120 Mini Black CPU wins on value for money.
The ARCTIC Liquid Freezer III Pro offers superior cooling performance and aesthetics, while the Thermalright Peerless Assassin provides solid value for budget builds.
Why ARCTIC Liquid Freezer III Pro 240 A-RGB - is better
Cooling Performance
AIO design with 240 mm radiator offers better cooling.
Aesthetics
A-RGB lighting enhances visual appeal.
Noise Levels
Quieter operation at lower speeds.
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Price
Significantly lower cost.
Size
More compact design for smaller builds.
Simplicity
Easier installation process.
Overall score
Specifications
| Spec | ARCTIC Liquid Freezer III Pro 240 A-RGB - | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Cooling Type | AIO | Air |
| Socket Support | LGA1851/1700, AM5/AM4 | LGA1851/1700, AM4/AM5 |
| Fan Speed | PWM | 1500 RPM |
| Heat Pipes | N/A | 6 |
| Warranty | 5 years | 3 years |
Dimension comparison
Overview of CPU Coolers
When considering CPU coolers, it’s essential to evaluate their cooling efficiency, compatibility, and price. The ARCTIC Liquid Freezer III Pro 240 A-RGB and the Thermalright Peerless Assassin 120 Mini Black represent two distinct approaches to CPU cooling. The former is an AIO cooler priced at $80.00, while the latter is a traditional air cooler available for $34.39. This substantial price difference of about 133% raises questions about the performance and features each cooler provides.
Cooling Performance
The ARCTIC Liquid Freezer III Pro 240 A-RGB is designed for high-performance cooling, featuring a 240 mm radiator and an integrated VRM fan that actively lowers the temperature of voltage converters. This design optimizes heat dissipation, making it suitable for high-load scenarios, especially for demanding CPU tasks. On the other hand, the Thermalright Peerless Assassin 120 Mini utilizes six heat pipes and a 120 mm PWM fan that operates at a maximum speed of 1500 RPM. While it offers efficient cooling for mid-range CPUs, it may not match the cooling capabilities of the more extensive AIO setup of the ARCTIC cooler.
Installation and Compatibility
In terms of installation, the ARCTIC cooler features native offset mounting for both Intel and AMD platforms, which ensures efficient heat transfer by centering the cold plate over the CPU hotspot. It supports a wide range of sockets, including Intel LGA1851 and LGA1700, and AMD AM5 and AM4. Meanwhile, the Thermalright cooler also supports a variety of Intel and AMD sockets, including LGA 1851 and AM5, but its installation may require more steps due to its traditional design. The simplicity of the AIO cooler's setup could appeal to users looking for a less involved installation process.
Design and Aesthetics
The aesthetic appeal of CPU coolers can be a deciding factor for many builders. The ARCTIC Liquid Freezer III Pro features an A-RGB design, allowing users to customize lighting effects, which can enhance the overall look of a gaming rig. Its sleek black finish adds a modern touch. Conversely, the Thermalright Peerless Assassin 120 Mini Black adopts a fully blackened design with a minimalist approach, suitable for those preferring a less flashy appearance. Both coolers are visually appealing, but the choice ultimately depends on personal preference for RGB lighting versus a more understated design.
Noise Levels
Noise levels are crucial, especially for users seeking a quiet computing experience. The ARCTIC Liquid Freezer III Pro's fans are designed to operate quietly, particularly at lower speeds, making it a suitable choice for noise-sensitive environments. The Thermalright Peerless Assassin's PWM fan operates at a maximum noise level of ≤ 25.6 dB(A), which is relatively quiet but may not match the low-noise performance of ARCTIC's fans under load. If a quieter operation is a priority, the ARCTIC cooler may be the better choice.
Brand Reputation and Reliability
Both ARCTIC and Thermalright have established reputations in the CPU cooler market. ARCTIC is known for its innovative cooling solutions and high-quality products, while Thermalright boasts over 20 years of experience and a solid following among PC builders. The ARCTIC Liquid Freezer III Pro is designed with optimized contact pressure for longer CPU lifespan, which could enhance reliability. Thermalright’s use of AGHP technology in its cooler enhances heat dissipation, indicating both brands focus on performance and reliability, though their approaches differ.
Pricing and Value
At $80.00, the ARCTIC Liquid Freezer III Pro is significantly more expensive than the Thermalright Peerless Assassin, which retails at $34.39. This price difference of about 133% may lead some to question whether the additional features and performance justify the higher cost. For those on a budget or building a less demanding system, the Thermalright cooler offers a compelling value proposition without sacrificing essential cooling capabilities. Conversely, for users seeking superior cooling performance and aesthetics, the investment in the ARCTIC cooler may be warranted.
Which should you buy?
Choosing between the ARCTIC Liquid Freezer III Pro and the Thermalright Peerless Assassin 120 Mini ultimately depends on your specific needs and budget. If you are looking for exceptional cooling performance, aesthetics, and quieter operation, the ARCTIC cooler is worth the investment. However, if you are on a tighter budget or require a reliable cooler for a mid-range build, the Thermalright option provides solid performance at a significantly lower price. Consider your system requirements and personal preferences carefully before making a decision.

