Thermalright Peerless Assassin 120 CPU Air Cooler vs Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi
Updated August 2026 — The Thermalright Peerless Assassin 120 offers superior cooling performance and aesthetics, while the Assassin X 120R is a budget-friendly option with useful features. Choose based on your cooling needs and budget.
The Thermalright Peerless Assassin 120 offers superior cooling performance and aesthetics, while the Assassin X 120R is a budget-friendly option with useful features. Choose based on your cooling needs and budget.
Why Thermalright Peerless Assassin 120 CPU Air Cooler is better
Cooling Performance
Peerless Assassin supports TDP of 245W.
Design
Peerless has a dual tower design.
Noise Level
Peerless operates at 25.6dB(A), quieter than Assassin X.
Why Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi is better
Price
Assassin X is more budget-friendly at C$28.39.
Digital Features
Assassin X has a digital screen for monitoring.
Fan Speed
Assassin X has a higher fan speed of 2000RPM.
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 CPU Air Cooler | Thermalright Assassin X 120R Digital ARGB White CPU Cooler Air with 4X6mm HeatPi |
|---|---|---|
| TDP | 245W | unknown |
| Fan Count | 2 | 1 |
| Noise Level | 25.6dB(A) | unknown |
| ARGB Lighting | Yes | No |
| Socket Support | Intel/AMD | Intel/AMD |
Dimension comparison
Introduction to CPU Coolers
When it comes to cooling solutions for your CPU, choosing the right cooler can make all the difference. In this comparison, we will look at the Thermalright Peerless Assassin 120 CPU Air Cooler and the Thermalright Assassin X 120R Digital ARGB White CPU Cooler. Both products hail from the same brand, Thermalright, and are designed to provide efficient cooling, but they have distinct features that cater to different user needs.
Design and Aesthetics
The Thermalright Peerless Assassin 120 features a twin tower design with a pristine white finish, enhancing its appeal for users seeking a clean, modern aesthetic. On the other hand, the Assassin X 120R showcases a sleek single tower design complemented by a digital screen top cover that not only adds a touch of sophistication but also provides real-time temperature monitoring. The Peerless Assassin's dimensions are 125(L)x135(W)x157(H)mm, while the Assassin X measures similarly but focuses more on functionality with its LCD panel.
Cooling Performance
When it comes to cooling performance, the Thermalright Peerless Assassin 120 is equipped with an impressive 9600cm² heat dissipation area, allowing it to manage heat effectively under heavy workloads. This cooler supports a TDP of up to 245W, making it suitable for high-performance CPUs. Conversely, the Assassin X 120R utilises a single tower design with 4 heat pipes and a maximum fan speed of 2000RPM, which is slightly higher than the Peerless Assassin's 1500RPM. This results in effective cooling, but it may not be as robust as the dual tower design of its counterpart.
Noise Levels
Noise is a critical factor for many users when selecting a CPU cooler. The Peerless Assassin operates at a noise level of 25.6dB(A), ensuring a quiet computing experience even under load. In contrast, the Assassin X 120R's fan speed can reach up to 2000RPM, likely resulting in higher noise levels, though specific dB ratings are not provided. Users prioritising a quieter system may prefer the Peerless Assassin, while those looking for performance might accept the potential increase in noise from the Assassin X.
Fan Technology and Features
Both coolers come with advanced fan technology. The Peerless Assassin features two PWM fans with colourful ARGB lighting, allowing for synchronised lighting effects with compatible motherboards. This adds a visually appealing element to PC builds. Meanwhile, the Assassin X 120R utilises a single 2000RPM PWM fan that adjusts its speed according to the motherboard’s temperature, ensuring efficient cooling without unnecessary noise. The digital screen on the Assassin X provides a unique feature, displaying real-time CPU and GPU temperatures, which can be a valuable asset for enthusiasts monitoring system performance.
Compatibility
Compatibility is crucial for CPU coolers, and both the Peerless Assassin and the Assassin X cater to a wide range of Intel and AMD sockets. The Peerless Assassin is compatible with Intel sockets from 1150 to 2066 and AMD AM4 and AM5. The Assassin X also supports dual platforms, ensuring flexibility for users looking to build or upgrade their systems. This broad compatibility makes both coolers versatile choices for various builds.
Price Comparison
Price can often be a deciding factor, and there is a noticeable difference between the two coolers. The Thermalright Peerless Assassin 120 is priced at C$51.39, reflecting its dual tower design and enhanced cooling capabilities. In comparison, the Assassin X 120R is more budget-friendly at C$28.39. This lower price point may appeal to those looking for effective cooling without breaking the bank, although potential buyers should consider whether the lower cost aligns with their cooling needs.
User Experience and Installation
User experience often depends on how easy the cooler is to install and its overall performance. The Peerless Assassin is designed for straightforward installation with included metal fasteners for both Intel and AMD platforms. Additionally, its offset asymmetric layout allows for seamless installation alongside other components. The Assassin X, with its digital screen, may require a bit more setup, particularly in terms of software installation for monitoring temperatures. However, once installed, both coolers are designed to provide reliable performance.
Which should you buy?
Choosing between the Thermalright Peerless Assassin 120 and the Thermalright Assassin X 120R ultimately depends on your specific needs and budget. If you are looking for high cooling performance and aesthetic appeal, the Peerless Assassin, with its dual tower design and better cooling capacity, may be the way to go. However, if you are on a budget and appreciate features like temperature monitoring and a compact design, the Assassin X 120R is an excellent option. Consider what factors—such as noise levels, cooling efficiency, and price—are most important to you before making a decision.
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