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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm vs Noctua NH-D15 G2 LBC

Updated August 2026The Thermalright Peerless Assassin 120 offers great value for budget-conscious users, while the Noctua NH-D15 G2 excels in performance and quiet operation. Choose based on your needs and budget.

The Thermalright Peerless Assassin 120 offers great value for budget-conscious users, while the Noctua NH-D15 G2 excels in performance and quiet operation. Choose based on your needs and budget.

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

price

Thermalright is significantly cheaper at C$62.90

compatibility

Compatible with a wider range of builds

design

Sleek black design with digital display

Why Noctua NH-D15 G2 LBC is better

performance

Superior cooling performance with advanced fans

noise

Near-silent operation at idle

build quality

Premium materials and design

Overall score

Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm
75
Noctua NH-D15 G2 LBC
90

Specifications

SpecThermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Noctua NH-D15 G2 LBC
PriceC$62.90C$209.95
Fan Speed1850 RPMmax speed adjustable
Cooling TypeAirAir
PWM ControlYesYes
RAM ClearanceStandard59mm

Dimension comparison

Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm Noctua NH-D15 G2 LBC

Overview of Thermalright Peerless Assassin 120 Digital ARGB Black and Noctua NH-D15 G2 LBC

When it comes to CPU coolers, the Thermalright Peerless Assassin 120 Digital ARGB Black and the Noctua NH-D15 G2 LBC stand out as top contenders. The Thermalright model is priced at C$62.90, making it an affordable option, while the Noctua cooler is significantly more expensive at C$209.95. The price difference reflects their design and performance capabilities, which cater to different user needs and preferences.

Design and Build Quality

The Thermalright Peerless Assassin 120 Digital ARGB Black features a dual tower design with dual fans, providing effective heat dissipation with six pure copper heat pipes. It stands at 162mm tall, making it compatible with most ATX cases. In contrast, the Noctua NH-D15 G2 LBC boasts an improved second generation of the iconic NH-D15 design, featuring eight heat pipes and a larger surface area for better cooling. Its offset design allows for enhanced RAM clearance and compatibility with flat CPUs. Both coolers exhibit high-quality construction, but the Noctua may appeal more to users seeking premium materials and advanced design.

Cooling Performance

Cooling performance is a critical factor when selecting a CPU cooler. The Thermalright Peerless Assassin operates with a fan speed of up to 1850 RPM and an airflow of 88.89 CFM, achieving a noise level of 25.6 dB(A). While these specifications indicate solid performance for most setups, the Noctua NH-D15 G2 LBC offers superior cooling capability due to its state-of-the-art NF-A14x25r G2 fans and increased surface area. This cooler is designed for high-performance CPUs, ensuring optimal thermal management under heavy loads. Users looking for quieter operation during idle periods will appreciate the Noctua's low-noise adaptors for acoustic fine-tuning.

Compatibility

Compatibility is vital for any CPU cooler, especially with varying CPU architectures. The Thermalright Peerless Assassin is designed for mainstream ATX chassis and fits most setups without hassle. The Noctua NH-D15 G2 LBC, however, comes with specialized features for optimal contact quality on specific CPU platforms, particularly AMD AM5 and AM4. It is essential to note that the Noctua model is not recommended for Intel LGA1700, LGA1200, or LGA115x, which may limit its appeal to users with those configurations. The Thermalright offers broader compatibility for a range of builds.

Noise Levels

Noise levels can significantly impact the user experience, especially in quieter environments. The Thermalright Peerless Assassin maintains a noise level of 25.6 dB(A), which is relatively quiet for a cooler of its performance class. The Noctua NH-D15 G2 LBC is engineered for near-silent operation during idle, thanks in part to its PWM for automatic speed control. This allows the Noctua to adjust fan speeds based on temperature, making it a more appealing choice for users who prioritize a quiet computing environment.

Aesthetics

Aesthetics play an important role in choosing a CPU cooler, particularly for those who wish to showcase their builds. The Thermalright Peerless Assassin features a sleek black design with a digital display board on the magnetic top cover, appealing to gamers and enthusiasts who value visual flair. On the other hand, the Noctua NH-D15 G2 LBC, while less flashy, boasts a professional and understated look with its brown and beige colour scheme. Both coolers can enhance the overall aesthetics of a system, but the choice ultimately depends on personal preference.

Price Consideration

Price is a decisive factor for many consumers when choosing between CPU coolers. At C$62.90, the Thermalright Peerless Assassin offers excellent value, especially for budget-conscious builders. Its combination of performance and price makes it an attractive option for those who do not want to break the bank. Conversely, the Noctua NH-D15 G2 LBC's price of C$209.95 reflects its premium build quality and superior performance capabilities. While it is a significant investment, users may find it justified when considering its longevity and efficiency in demanding applications.

Which should you buy?

In conclusion, the choice between the Thermalright Peerless Assassin 120 Digital ARGB Black and the Noctua NH-D15 G2 LBC largely depends on your specific needs and budget. If you're looking for an affordable, effective cooling solution with solid performance for general use, the Thermalright model is an excellent choice at C$62.90. However, if you require superior cooling performance, particularly for high-end CPUs, and are willing to invest more for quieter operation and advanced features, the Noctua NH-D15 G2 LBC at C$209.95 is undoubtedly the better option. Ultimately, both coolers excel in their categories, catering to different segments of the market.

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Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm vs Noctua NH-D15 G2 LBC | versusfinder