Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, wins on size fit and noise level, Thermalright Peerless Assassin 120 Mini Black CPU wins on fan speed and cooling eff..
The Thermalright AXP90-X53 is a great budget option for compact builds, while the Peerless Assassin 120 Mini excels in performance for larger setups.
Why Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, is better
Price
AXP90-X53 is $19.39, cheaper than Peerless Assassin at $34.39.
Size
AXP90-X53 has a low profile of 53mm, ideal for compact builds.
Noise Level
AXP90-X53 operates at 22.4 dBA, quieter than Peerless Assassin's 25.6 dBA.
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Cooling Performance
Peerless Assassin has a larger 120mm fan for better airflow.
Heat Pipes
Peerless Assassin features 6 heat pipes compared to AXP90-X53's 4.
Airflow
Peerless Assassin delivers 66.87 CFM, significantly higher than AXP90-X53's 42.58 CFM.
Overall score
Specifications
| Spec | Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler, | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Max RPM | 2700 | 1500 |
| Noise Level | 22.4 dBA | 25.6 dBA |
| Airflow | 42.58 CFM | 66.87 CFM |
| Compatibility | LGA1700/AM4 | LGA1700/AM4 |
| Material | Copper/Aluminum | Aluminum |
Dimension comparison
Overview of the Products
When it comes to CPU coolers, the Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler is priced at $19.39, making it about 43% cheaper than the Thermalright Peerless Assassin 120 Mini Black CPU Cooler, which costs $34.39. Both products are designed for efficient cooling, but they cater to different use cases and preferences. The AXP90-X53 is ideal for compact builds, while the Peerless Assassin offers robust performance for larger setups.
Design and Build Quality
The Thermalright AXP90-X53 features a low-profile design with a height of just 53mm, making it suitable for small ITX motherboards and chassis. It boasts a pure copper base and four copper heat pipes for effective heat dissipation. In contrast, the Thermalright Peerless Assassin 120 Mini has a taller profile at 135mm and utilizes six heat pipes with AGHP technology, which enhances its cooling capabilities. The aesthetic appeal of the Peerless Assassin is also noteworthy, with a fully blackened finish and CNC precision micro-engraved copper base, offering a modern look.
Cooling Performance
Cooling performance is a critical factor in choosing a CPU cooler. The AXP90-X53 features a 92mm PWM fan that operates at a maximum speed of 2700 RPM, producing a noise level of just 22.4 dBA. This makes it an excellent choice for users seeking a quiet operation. On the other hand, the Peerless Assassin 120 Mini is equipped with a larger 120mm PWM fan that can reach speeds of 1500 RPM, delivering an impressive airflow of 66.87 CFM. While it may operate at a slightly higher noise level of up to 25.6 dBA, its larger fan size allows for superior heat dissipation, making it suitable for more demanding setups.
Compatibility
Both coolers support a wide range of CPU sockets. The Thermalright AXP90-X53 is compatible with Intel sockets LGA1700/1851/1150/1151/1155/1156/1200 and AMD AM4/AM5. This broad compatibility ensures it can fit various builds, especially smaller ones. The Peerless Assassin 120 Mini also supports the same Intel and AMD sockets, providing flexibility for users. However, due to its larger size, the Peerless Assassin may be more suited for mid-tower or full-tower cases, while the AXP90-X53 excels in compact setups.
Noise Levels
Noise levels are an important consideration for many PC builders, especially those who prioritize a quiet environment. The AXP90-X53 operates at a very quiet 22.4 dBA, making it an excellent choice for home theater PCs or quiet office environments. In contrast, the Peerless Assassin 120 Mini can reach up to 25.6 dBA under full load. Although this is still relatively quiet, users looking for absolute silence may prefer the AXP90-X53. The difference of about 3.2 dBA can be significant in quiet settings.
Price Comparison
The price difference between these two coolers is notable, with the AXP90-X53 priced at $19.39 and the Peerless Assassin 120 Mini at $34.39. This makes the AXP90-X53 approximately 43% cheaper than its counterpart. For budget-conscious consumers or those building a low-cost system, the AXP90-X53 provides great value without compromising on essential features. However, those willing to invest more for improved cooling performance might find the price of the Peerless Assassin justified.
Brand Reputation
Thermalright has established itself as a reputable brand in the CPU cooling market, with over 20 years of experience. Both coolers reflect the brand's commitment to quality and performance. The AXP90-X53 is particularly popular among users who require a low-profile solution, while the Peerless Assassin is favored for its advanced cooling technology and design aesthetics. The brand's focus on research and development ensures that both products meet modern computing needs effectively.
Which should you buy?
The choice between the Thermalright AXP90-X53 White Low Profile ITX CPU Air Cooler and the Thermalright Peerless Assassin 120 Mini Black CPU Cooler ultimately depends on your specific needs. If you require a compact, low-noise solution for a small ITX build, the AXP90-X53 is an excellent choice at just $19.39. However, if you’re looking for enhanced cooling performance in a larger system and are willing to pay $34.39, the Peerless Assassin 120 Mini offers superior airflow and heat dissipation. Consider your build's size, noise tolerance, and cooling requirements before making a decision.

