Thermalright Assassin X 120 SE ARGB CPU Air Cooler vs Thermalright Peerless Assassin 120 Black CPU Air Cooler
Updated August 2026 — The Thermalright Peerless Assassin 120 Black offers superior cooling performance and broader compatibility, making it the better choice for enthusiasts. However, the Assassin X 120 SE ARGB is a more budget-friendly option with appealing aesthetics.
The Thermalright Peerless Assassin 120 Black offers superior cooling performance and broader compatibility, making it the better choice for enthusiasts. However, the Assassin X 120 SE ARGB is a more budget-friendly option with appealing aesthetics.
Why Thermalright Assassin X 120 SE ARGB CPU Air Cooler is better
price
Assassin X is significantly cheaper at C$24.29
aesthetics
Assassin X features attractive ARGB lighting
weight
Assassin X is lighter at 0.645 kg
Why Thermalright Peerless Assassin 120 Black CPU Air Cooler is better
cooling
Peerless has a double tower design for better cooling
compatibility
Peerless supports more Intel sockets
heat pipes
Peerless has six heat pipes for superior heat dissipation
Overall score
Specifications
| Spec | Thermalright Assassin X 120 SE ARGB CPU Air Cooler | Thermalright Peerless Assassin 120 Black CPU Air Cooler |
|---|---|---|
| Heat Pipes | 4 | 6 |
| Max RPM | 1550 | 1500 |
| Noise Level | 25.6 dB(A) | 25.6 dB(A) |
| Socket Support | Intel 115X, AMD AM4 | Intel LGA1150/1151/1155/1156/1200/1700/2066/2011, AMD AM4/AM5 |
| Air Flow | 66.17 CFM | 66.17 CFM |
Dimension comparison
Brand Overview
Both the Thermalright Assassin X 120 SE ARGB and the Thermalright Peerless Assassin 120 Black are products from Thermalright, a reputable brand known for over 20 years in the computer cooling market. While both coolers offer solid performance, they cater to different needs and preferences. The Assassin X 120 SE ARGB focuses on affordability and efficient cooling, whereas the Peerless Assassin 120 Black targets users seeking enhanced cooling capabilities with a more robust design.
Cooling Performance
The Peerless Assassin 120 Black stands out in terms of cooling performance due to its double tower design and six heat pipes, which provide superior heat dissipation. Its effective heat dissipation area measures 9600 cm², significantly larger than that of the Assassin X 120 SE ARGB. The latter employs four heat pipes and is suitable for TDPs ranging from 125 to 225 watts. While both coolers utilize advanced AGHP technology to mitigate the inverse gravity effect, the additional heat pipes in the Peerless model allow it to manage higher temperatures more effectively.
Design and Aesthetics
In terms of design, the Assassin X 120 SE ARGB features an attractive ARGB lighting system, making it a more visually appealing choice for gamers and PC builders who value aesthetics. On the other hand, the Peerless Assassin 120 Black sports a sleek, black-painted finish that enhances its modern look. The choice between them boils down to personal preference: if you prefer customizable RGB lighting, the Assassin X may be your best bet, while those leaning towards a minimalist black design may favour the Peerless Assassin.
Dimensions and Weight
When comparing dimensions, the Peerless Assassin 120 Black is slightly bulkier, measuring 125(L)x135(W)x157(H) mm, compared to the Assassin X 120 SE ARGB's dimensions of 125(L)x71(W)x148(H) mm. This difference in width may influence compatibility with certain cases. The Peerless weighs 1.02 kg, while the Assassin X is lighter at 0.645 kg. If you have limited space in your case, the more compact Assassin X may be a better fit, but the additional weight of the Peerless reflects its enhanced cooling capabilities.
Noise Levels
Both coolers operate at a maximum noise level of 25.6 dB(A), which is impressively quiet for air coolers. This means that neither cooler should disrupt your gaming or working environment. However, the Peerless Assassin 120 Black features dual PWM fans, which may offer improved airflow without increasing noise levels, thus providing a more efficient cooling solution at similar sound levels. Those prioritizing a quiet operation might find both options satisfactory, yet the dual-fan setup in the Peerless could provide an edge under load.
Compatibility
Both coolers offer a broad range of compatibility with Intel and AMD sockets, but there are some differences. The Assassin X 120 SE ARGB supports Intel sockets 115X, 1200, 1700, and AMD AM4, making it versatile for various builds. The Peerless Assassin 120 Black, however, supports a wider range of Intel sockets, including LGA1150, 1151, 1155, 1156, 1200, 1700, 2066, and 2011, as well as AMD AM4 and AM5. If you plan on using a newer CPU or motherboard, the Peerless Assassin may be the better choice due to its broader socket compatibility.
Price Comparison
Price is a significant factor when choosing between these two coolers. The Assassin X 120 SE ARGB is priced at C$24.29, making it an excellent budget option for users looking for reliable cooling without breaking the bank. In contrast, the Peerless Assassin 120 Black retails for C$54.90, reflecting its advanced features and superior cooling performance. While the higher price of the Peerless may be justified for performance enthusiasts, budget-conscious buyers might find the Assassin X to be a more appealing option.
Which should you buy?
Choosing between the Thermalright Assassin X 120 SE ARGB and the Thermalright Peerless Assassin 120 Black ultimately depends on your specific needs and preferences. If you are looking for an affordable, visually appealing cooler with decent performance, the Assassin X 120 SE ARGB is an excellent choice. However, if you require superior cooling capabilities, compatibility with a wider range of sockets, and are willing to invest more, the Peerless Assassin 120 Black is the better option. Evaluate your priorities—be it budget, aesthetic appeal, or cooling performance—to make the best choice for your system.
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