Thermalright Peerless Assassin 120 Mini Black CPU vs Thermalright Phantom Spirit 120SE CPU Air Cooler,
Updated August 2026 — Thermalright Phantom Spirit 120SE CPU Air Cooler, leads on fan efficiency and cooling performa.
The Thermalright Peerless Assassin 120 Mini Black offers solid performance at a lower price, while the Phantom Spirit 120SE provides slightly better cooling efficiency with its additional heat pipe.
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
lower price
Peerless Assassin costs $34.39
compact size
Peerless Assassin is shorter at 135mm
higher airflow
Peerless Assassin has 66.87 CFM airflow
Why Thermalright Phantom Spirit 120SE CPU Air Cooler, is better
more heat pipes
Phantom Spirit has 7 heat pipes
dual fans
Phantom Spirit features dual 120mm fans
better cooling potential
Phantom Spirit designed for higher thermal loads
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 Mini Black CPU | Thermalright Phantom Spirit 120SE CPU Air Cooler, |
|---|---|---|
| Heat Pipes | 6 | 7 |
| Fan Speed | 1500 RPM | 1500 RPM |
| Noise Level | 25.6 dB(A) | 25.6 dB(A) |
| Compatibility | LGA 1700, AM4/AM5 | LGA 1700, AM4/AM5 |
| Price | $34.39 | $35.90 |
Dimension comparison
Overview of the Thermalright Peerless Assassin 120 Mini Black
The Thermalright Peerless Assassin 120 Mini Black CPU Cooler is priced at $34.39, making it an attractive option for budget-conscious gamers and PC builders. This cooler features six heat pipes and AGHP technology, which enhances thermal performance by reducing the effects of gravity on heat dissipation.
Thermalright has a solid reputation, with over 20 years in the cooling market. The Peerless Assassin 120 Mini Black is designed for various Intel and AMD socket compatibility, including LGA 1700 and AM5. Its compact size (125mm x 110mm x 135mm) allows for versatility in builds where space is a concern. With a 120mm PWM fan that operates at 1500 RPM and a noise level of just 25.6 dB(A), it provides efficient cooling without excessive noise, making it an excellent choice for quieter systems.
Overview of the Thermalright Phantom Spirit 120SE
The Thermalright Phantom Spirit 120SE CPU Air Cooler is slightly more expensive at $35.90, which is about 4.4% higher than the Peerless Assassin. This cooler boasts seven heat pipes and also utilizes AGHP technology, which aims to improve cooling efficiency by addressing the inverse gravity effect during installation.
Like its counterpart, the Phantom Spirit 120SE is compatible with a wide range of Intel and AMD processors, including LGA 1700 and AM4 sockets. Its dimensions are 125mm x 135mm x 154mm, making it taller than the Peerless Assassin. This extra height may provide an edge in heat dissipation, especially in high-performance scenarios. The dual 120mm TL-C12B V2 PWM fans, operating at the same speed of 1500 RPM, offer a slightly lower airflow of 66.17 CFM, yet maintain a similar noise level of 25.6 dB(A).
Cooling Technology and Efficiency
Both the Peerless Assassin 120 Mini Black and the Phantom Spirit 120SE utilize AGHP technology, enhancing their thermal performance capabilities. The Peerless Assassin has six heat pipes, while the Phantom Spirit features seven, potentially giving it a slight edge in heat transfer efficiency.
The difference in heat pipe count means that while both coolers are designed to perform well under load, the Phantom Spirit may offer marginally better thermal performance due to its additional heat pipe. However, both coolers are engineered to operate efficiently, with noise levels capped at 25.6 dB(A), making them suitable for quiet environments. This makes them both excellent choices for users who prioritize low noise while gaming or working.
Design and Aesthetics
Aesthetically, the Peerless Assassin 120 Mini Black features a fully blackened design with an antioxidant coating, complemented by CNC precision micro-engraving on the copper base. This gives it a sleek and modern appearance, ideal for contemporary PC builds.
On the other hand, the Phantom Spirit 120SE has an anodized black frosted top with finely carved pure copper base technology. This design not only looks appealing but also maximizes the heat dissipation area. While both coolers have their unique designs, personal preference will dictate which one fits better with a user's build aesthetic.
Installation and Compatibility
When it comes to installation, both coolers are designed for ease of use with compatible mounting kits provided for various CPU socket types. The Peerless Assassin is compatible with Intel sockets up to LGA 1851 and AMD AM4/AM5, making it versatile for most modern CPUs.
Similarly, the Phantom Spirit 120SE also supports a wide range of sockets, including Intel LGA 1851 and AMD AM4/AM5. The installation process for both coolers has been designed to be user-friendly, with clear instructions available. However, the Phantom Spirit's slightly larger height may require additional consideration regarding case compatibility.
Performance Under Load
In terms of performance under load, the Peerless Assassin 120 Mini Black operates effectively with its 120mm fan, delivering a maximum airflow of 66.87 CFM. This helps maintain optimal CPU temperatures during gaming or heavy workloads.
Conversely, the Phantom Spirit 120SE achieves a maximum airflow of 66.17 CFM with its dual fans. While this is slightly lower than the Peerless Assassin, the additional heat pipe may compensate for this difference in airflow, potentially leading to comparable performance during intense usage. Both coolers are designed to handle typical gaming and workload scenarios effectively.
Noise Levels and Operation
Both coolers operate quietly, maintaining a noise level of 25.6 dB(A), making them suitable for environments where low noise is critical. This is a significant factor for gamers and professionals who prefer a quieter setup.
Despite the slight differences in airflow, neither cooler is expected to produce distracting noise during operation. This makes both the Peerless Assassin and the Phantom Spirit excellent choices for users who want high-performance cooling without compromising on auditory comfort.
Which should you buy?
Choosing between the Thermalright Peerless Assassin 120 Mini Black and the Thermalright Phantom Spirit 120SE ultimately depends on your specific needs and preferences. The Peerless Assassin is about 4.4% cheaper at $34.39 and offers solid performance with good aesthetics, making it an excellent choice for budget-conscious users.
On the other hand, the Phantom Spirit, priced at $35.90, offers an additional heat pipe and dual fans, which may provide marginally better cooling performance. If you are looking for a cooler that can handle higher thermal loads and you don’t mind spending a bit more, the Phantom Spirit could be the better option.
Both coolers excel in low noise operation and compatibility with a wide range of CPUs, making either a reliable choice for your next build. Ultimately, consider your budget, space constraints, and cooling needs when making your decision.

