ID-COOLING SE-903-XT V2 Black CPU Air Cooler, vs Thermalright Peerless Assassin 120 SE CPU Cooler,
Updated August 2026 — ID-COOLING SE-903-XT V2 Black CPU Air Cooler, wins on noise level and installation, Thermalright Peerless Assassin 120 SE CPU Cooler, wins on cooling perf and compatibility.
The ID-COOLING SE-903-XT V2 Black offers great value for budget-conscious users, while the Thermalright Peerless Assassin 120 SE excels in performance for demanding tasks.
Why ID-COOLING SE-903-XT V2 Black CPU Air Cooler, is better
Price
ID-COOLING is significantly cheaper at $14.99.
Noise
ID-COOLING operates quieter under load.
Size
ID-COOLING is more compact, fitting smaller cases.
Why Thermalright Peerless Assassin 120 SE CPU Cooler, is better
Cooling Performance
Thermalright has dual fans and six heat pipes for better cooling.
Airflow
Thermalright offers higher airflow at 66.17 CFM.
Build Quality
Thermalright features a more robust design with AGHP technology.
Overall score
Specifications
| Spec | ID-COOLING SE-903-XT V2 Black CPU Air Cooler, | Thermalright Peerless Assassin 120 SE CPU Cooler, |
|---|---|---|
| Price | $14.99 | $49.99 |
| Fan Speed | 1000 RPM | 1550 RPM |
| Heat Pipes | 4 | 6 |
| Compatibility | Intel & AMD | Intel & AMD |
| Airflow | 50 CFM | 66.17 CFM |
Dimension comparison
Overview of the ID-COOLING SE-903-XT V2 Black
The ID-COOLING SE-903-XT V2 Black CPU Air Cooler is designed to deliver upgraded cooling performance at an attractive price point of $14.99. It features a compact tower design that is compatible with both Intel and AMD platforms, making it a versatile choice for many PC builders.
This cooler boasts an improved heatsink design with direct touch heatpipes, ensuring efficient heat dissipation. The enhanced 100mm PWM fan provides increased airflow compared to its predecessor, moving more air while maintaining low noise levels. Additionally, the cooler's low-profile footprint ensures compatibility with smaller cases, making it an excellent option for those with limited space.
Overview of the Thermalright Peerless Assassin 120 SE
The Thermalright Peerless Assassin 120 SE CPU Cooler offers robust cooling capabilities for $49.99, which is about 233% more expensive than the ID-COOLING model. It features dual 120mm PWM fans capable of reaching speeds of 1550 RPM, allowing for enhanced cooling performance, particularly in demanding gaming or high-performance scenarios.
This cooler is equipped with six heat pipes utilizing AGHP technology, which helps mitigate the inverse gravity effect in both vertical and horizontal orientations. The design ensures that it efficiently manages heat for both Intel and AMD platforms, making it a suitable choice for a wide variety of builds.
Design and Aesthetics
When it comes to design, the ID-COOLING SE-903-XT V2 Black presents a more refined and cohesive appearance, making it visually appealing for a range of setups. Its compact size and low-profile footprint allow it to blend seamlessly into small and mid-sized cases without blocking RAM or motherboard components.
On the other hand, the Thermalright Peerless Assassin 120 SE, while larger, offers a rugged and robust aesthetic that appeals to gamers and performance enthusiasts. Its dual-fan configuration is not only functional but also adds to its visual impact. However, the larger size may not be suitable for compact builds.
Cooling Performance
In terms of cooling performance, the Thermalright Peerless Assassin 120 SE is likely to outperform the ID-COOLING SE-903-XT V2 due to its dual fan setup and six heat pipes. The increased airflow of 66.17 CFM combined with the higher RPM can dissipate more heat, making it ideal for overclocking and high-load scenarios.
While the ID-COOLING cooler has improved its airflow efficiency with a larger 100mm fan, it may not match the performance of the Thermalright unit in more demanding conditions. Users seeking maximum cooling performance should consider the Thermalright model, especially for gaming or intensive tasks.
Noise Levels
Noise levels are an essential factor for many PC builders, and the ID-COOLING SE-903-XT V2 offers a low-noise operation, making it suitable for quiet environments. Its upgraded fan design manages to maintain a balanced noise output, ensuring that it operates quietly during daily use and gaming.
In contrast, the Thermalright Peerless Assassin 120 SE has a maximum noise level of 25.6 dB(A). While still relatively quiet, it could be slightly louder than the ID-COOLING cooler under load. This difference may not be significant for most users, but those prioritizing silence may lean towards the ID-COOLING option.
Installation and Compatibility
Both coolers excel in ease of installation. The ID-COOLING SE-903-XT V2 features an upgraded universal mounting bracket that simplifies the process for both Intel and AMD platforms. This user-friendly feature makes it accessible for builders of all experience levels.
The Thermalright Peerless Assassin 120 SE also comes with mounting solutions for various CPU socket types, including Intel's LGA 1700 and AMD's AM4/AM5. However, users must note that installation on AMD platforms requires the use of the motherboard's built-in backplane, which is not included. This could pose an inconvenience for some users compared to the straightforward installation of the ID-COOLING model.
Price Point Comparison
The ID-COOLING SE-903-XT V2 Black is priced at $14.99, making it an attractive budget option for users looking for decent cooling without breaking the bank. In contrast, the Thermalright Peerless Assassin 120 SE is priced at $49.99, which is significantly higher. This price difference of $35 is approximately 233%, indicating that the Thermalright cooler is aimed at users willing to invest more for enhanced cooling performance and features.
Budget-conscious consumers may find the ID-COOLING cooler to be a more sensible choice, while enthusiasts seeking superior cooling capabilities may justify the higher price of the Thermalright cooler.
Which should you buy?
Choosing between the ID-COOLING SE-903-XT V2 Black and the Thermalright Peerless Assassin 120 SE boils down to your specific needs and budget. If you are looking for an affordable, compact cooler that performs well in standard conditions, the ID-COOLING model is an excellent choice. It offers good performance, low noise, and easy installation at a competitive price.
Conversely, if you demand high-performance cooling for gaming or overclocking and are willing to invest more, the Thermalright Peerless Assassin 120 SE is the better option. It delivers superior cooling capabilities, although at a higher price point. Ultimately, your decision should reflect your performance needs and budget constraints.

