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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm vs upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes

Updated August 2026The Thermalright Peerless Assassin 120 offers superior cooling performance and aesthetics, while the upHere H45K6 excels in compact design and affordability.

The Thermalright Peerless Assassin 120 offers superior cooling performance and aesthetics, while the upHere H45K6 excels in compact design and affordability.

Why Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm is better

Cooling Performance

Higher airflow and lower noise levels

Aesthetics

RGB lighting and modern design

Heat Dissipation

More effective heat management with dual fans

Why upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes is better

Compact Design

Fits in tight spaces with a low profile

Price

More affordable option

Installation

Easier installation in Mini ITX cases

Overall score

Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm
85
upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes
70

Specifications

SpecThermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes
Airflow88.89 CFM35.34 CFM
Noise Level≤25.6 dB(A)≤27 dB(A)
Fan Speed1850 RPM800-2800 RPM
TDPN/A150W
CompatibilityATXMini ITX

Dimension comparison

Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes

Introduction to CPU Coolers

When it comes to keeping your CPU cool, choosing the right cooler is crucial for performance and longevity. In this article, we will compare two popular CPU coolers: the Thermalright Peerless Assassin 120 Digital ARGB Black and the upHere H45K6 Low Profile CPU Cooler. Each cooler has its unique features and benefits, catering to different user needs and system configurations.

Design and Aesthetics

The Thermalright Peerless Assassin 120 Digital ARGB Black stands out with its dual-tower design and a striking digital display board, which adds a modern touch to any build. Its dimensions are 138x125x162mm, making it a sizable addition to a PC case, but it offers an impressive cooling capacity with its dual fans. In contrast, the upHere H45K6 Low Profile CPU Cooler features a compact 45mm height, specifically designed for small-form-factor builds. This cooler is ideal for users with limited space who still require effective thermal management. While the Thermalright cooler is more visually appealing for those who appreciate RGB lighting, the upHere cooler prioritizes functionality in tight spaces.

Cooling Performance

In terms of cooling performance, the Thermalright Peerless Assassin boasts a powerful setup with six pure copper heat pipes and dual fans that can reach speeds of up to 1850 RPM. This results in an impressive airflow of 88.89 CFM, effectively dissipating heat even during demanding tasks. The operating noise level is also relatively low at ≤25.6 dB(A). On the other hand, the upHere H45K6, with its six heat pipes and a high-speed 90mm fan that operates between 800 to 2800 RPM, provides a solid airflow of 35.34 CFM. While it handles thermal loads up to 150W TDP efficiently, it does so with a slightly higher noise level of ≤27 dB(A). For users prioritizing maximum cooling in larger builds, the Thermalright cooler may be the better option.

Compatibility and Installation

The installation of CPU coolers can often be a daunting task, but both the Thermalright and upHere coolers offer user-friendly features. The upHere H45K6 is designed with universal hardware compatibility, making it suitable for various Intel and AMD sockets, and it ensures zero obstruction with RAM and motherboard components. Its low-profile design allows for tool-free installation in under five minutes. Conversely, the Thermalright Peerless Assassin, while also compatible with mainstream ATX chassis, may require more space due to its larger size. For users with compact builds, the upHere cooler presents a distinct advantage in terms of ease of installation and compatibility.

Noise Levels

Noise levels are a significant consideration for many PC builders, especially those aiming for a quiet environment. The Thermalright Peerless Assassin operates at a maximum noise level of ≤25.6 dB(A), making it a relatively silent option during operation. This cooler's PWM intelligent temperature control also helps maintain low noise levels by adjusting fan speed according to the CPU’s temperature. In contrast, the upHere H45K6, while still relatively quiet, has a maximum noise level of ≤27 dB(A). The difference may be negligible for some users, but for those sensitive to sound, the Thermalright cooler has a slight edge in maintaining a quieter operation.

Price Comparison

When considering price, the Thermalright Peerless Assassin 120 Digital ARGB Black is priced at C$62.90, while the upHere H45K6 comes in at a more affordable C$49.99. The price difference reflects the varying features and cooling capabilities of each cooler. While the Thermalright model offers advanced aesthetics and superior cooling performance, the upHere cooler provides excellent value for those needing a functional and space-efficient solution. For budget-conscious consumers, the upHere H45K6 is a compelling option without compromising on essential features.

Target Audience

The target audience for these two coolers differs significantly. The Thermalright Peerless Assassin is tailored for gaming enthusiasts and PC builders who prioritize aesthetics, high performance, and are willing to invest more for these features. Its advanced cooling capabilities make it suitable for high-end systems that require consistent thermal management. Conversely, the upHere H45K6 is designed for users working within the confines of Mini ITX cases or those who need a reliable yet compact cooler for everyday computing tasks. Its affordability and space-saving design make it ideal for budget builds or smaller setups.

Which should you buy?

Ultimately, the choice between the Thermalright Peerless Assassin 120 Digital ARGB Black and the upHere H45K6 Low Profile CPU Cooler comes down to your specific needs and system requirements. If you seek maximum cooling performance, advanced aesthetics, and don’t mind spending a little extra, the Thermalright cooler is an excellent choice. However, for those with limited space or tighter budgets, the upHere H45K6 offers impressive cooling capability and compatibility, making it a smart purchase. Consider your build type, cooling needs, and budget to make the best decision for your setup.

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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm vs upHere H45K6 Low Profile CPU Cooler 45mm Height - 6 Heat Pipes | versusfinder