Thermalright Assassin X 120R Digital ARGB Black vs Thermalright Peerless Assassin 120 SE V3 CPU Air
Updated August 2026 — Thermalright Peerless Assassin 120 SE V3 CPU Air leads on compatibility and ease of install.
The Thermalright Peerless Assassin 120 SE V3 offers superior cooling performance and build quality, making it the better choice for high-demand systems.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Price
Assassin X is more budget-friendly at $22.90.
Aesthetics
Assassin X features ARGB lighting.
Size
Assassin X has a more compact height of 151mm.
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Cooling
Peerless Assassin has a double-tower design for better heat dissipation.
Build Quality
Peerless Assassin uses robust aluminum construction.
Noise Levels
Peerless Assassin has a maximum noise level of ≤29.8 dB(A).
Overall score
Specifications
| Spec | Thermalright Assassin X 120R Digital ARGB Black | Thermalright Peerless Assassin 120 SE V3 CPU Air |
|---|---|---|
| Fan Speed | 2000 RPM | 2000 RPM |
| Noise Level | N/A | ≤29.8 dB(A) |
| Material | PBT+PC | Aluminum |
| Compatibility | AM4/AM5, Intel LGA | AM4/AM5, Intel LGA 14/15 |
| ARGB Lighting | Yes | No |
Dimension comparison
Introduction
The Thermalright Assassin X 120R Digital ARGB Black CPU Air Cooler and the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler are two popular choices among PC enthusiasts seeking effective cooling solutions. Each cooler has unique features and specifications that cater to different needs. This comparison will help you determine which one might be the better fit for your setup.
Pricing
The Thermalright Assassin X 120R is priced at $22.90, making it the more budget-friendly option when compared to the Thermalright Peerless Assassin 120 SE V3, which retails for $35.90. This represents a price difference of about 17%, with the Assassin X being a more economical choice for those looking to save on their cooling solution while still maintaining quality performance.
Cooling Performance
When it comes to cooling efficiency, the Peerless Assassin 120 SE V3 stands out due to its double-tower design and dual fans. With six heat pipes and a maximum fan speed of 2000 RPM, it provides superior heat dissipation, which is essential for overclocked systems. On the other hand, the Assassin X utilizes four heat pipes and also reaches 2000 RPM, but its single tower design may limit its effectiveness under heavy loads. If maximum cooling performance is your priority, the Peerless Assassin is likely the better option.
Build Quality
Both coolers are built with high-quality materials, but there are distinctions. The Thermalright Assassin X features a digital screen top cover and utilizes PBT+PC materials for durability, which helps with noise reduction thanks to silicone corner pads. Meanwhile, the Peerless Assassin boasts a more robust aluminum construction, which contributes to its overall sturdiness and heat dissipation capabilities. Therefore, while both coolers are well-made, the Peerless Assassin offers a slight edge in terms of build quality.
Noise Levels
Noise levels are crucial for many users who prefer a quiet computing experience. The Assassin X aims for quieter operation with its silicone pads that reduce vibration noise. However, it does not specify exact noise levels. In contrast, the Peerless Assassin has a maximum operating noise level of ≤29.8 dB(A), which is relatively quiet for a dual-fan setup. If you’re sensitive to noise, you may find the Peerless Assassin a more suitable choice due to its quantifiable low noise levels.
Aesthetics
Aesthetic appeal can be subjective, but both coolers feature designs intended to enhance the visual presentation of PC builds. The Assassin X incorporates ARGB lighting that can synchronize with your motherboard for a dynamic look, complemented by its digital screen. The Peerless Assassin, while lacking ARGB, compensates with its sleek dual-tower design and anodized matte finish. If RGB lighting is a priority for your build, the Assassin X will likely be more appealing, yet the Peerless Assassin offers a sophisticated aesthetic for those who prefer a more understated look.
Compatibility
Compatibility with various CPU sockets is crucial for a CPU cooler. Both the Assassin X and Peerless Assassin support a wide range of Intel and AMD sockets, including AM4, AM5, and Intel LGA 1700/1151/1200. The Peerless Assassin, however, supports more recent Intel socket generations (14th and 15th) and emphasizes its dual-platform compatibility. This broader compatibility makes the Peerless Assassin a more future-proof option, particularly if you're planning to upgrade your CPU in the near future.
Installation Process
The installation processes for both coolers are designed to be user-friendly. The Assassin X includes straightforward installation instructions, and its design is compatible with most cases due to its height of 151mm. The Peerless Assassin's installation is similarly facilitated by included mounting accessories, although it requires the original motherboard backplate for AMD installations. Overall, both products prioritize ease of installation, but the Assassin X's slightly more compact size may give it a minor advantage for cramped builds.
Which should you buy?
Ultimately, your choice between the Thermalright Assassin X 120R and the Thermalright Peerless Assassin 120 SE V3 will depend on your specific needs. If you are looking for a budget-friendly, aesthetically pleasing cooler with RGB features, the Assassin X is an excellent choice at $22.90. However, if you prioritize maximum cooling performance, build quality, and future compatibility, the Peerless Assassin, priced at $35.90, offers superior features and efficiency. Assess your requirements and choose accordingly to enhance your system's cooling performance effectively.

