Cooler Master i70C ARGB Low Profile CPU Air Cooler vs Thermalright Assassin X 120R Digital ARGB Black
Updated August 2026 — Cooler Master i70C ARGB Low Profile CPU Air Cooler wins on ease of install, Thermalright Assassin X 120R Digital ARGB Black wins on build quality and cooling performa.
The Cooler Master i70C offers a compact design and budget-friendly price, while the Thermalright Assassin X provides superior cooling performance. Choose based on your specific needs.
Why Cooler Master i70C ARGB Low Profile CPU Air Cooler is better
Price
i70C is cheaper at $19.49
Size
i70C is 70mm tall, fitting compact builds
Installation
i70C has simplified installation process
Why Thermalright Assassin X 120R Digital ARGB Black is better
Cooling
Assassin X has a higher RPM fan at 2000
Heat Pipes
Assassin X features 4 heat pipes for better dissipation
Aesthetics
Assassin X has a digital screen top cover
Overall score
Specifications
| Spec | Cooler Master i70C ARGB Low Profile CPU Air Cooler | Thermalright Assassin X 120R Digital ARGB Black |
|---|---|---|
| Material | Aluminum/Copper | PBT/PC |
| Fan Type | PWM | PWM |
| Socket Compatibility | LGA 1700/1851 | LGA 1700/1851/AM4/AM5 |
| Noise Level | Low | Low |
| ARGB Lighting | Yes | Yes |
Dimension comparison
Design and Aesthetics
Both the Cooler Master i70C ARGB and the Thermalright Assassin X 120R feature appealing designs, but their aesthetics cater to different preferences. The i70C boasts a minimalist look with anodized black aluminum fins and a frosted blade design that enhances its ARGB lighting. In contrast, the Assassin X 120R has a more robust design with a digital screen top cover that combines high heat dissipation functionality with visual flair. While the i70C is designed to fit low-profile chassis, measuring 70mm in height, the Assassin X stands taller at 151mm. This makes the i70C more suitable for compact builds, while the Assassin X offers a more substantial presence in larger cases.
Cooling Performance
When it comes to cooling capabilities, both products have distinct advantages. The i70C features a copper insert base that efficiently dissipates heat for CPUs with a thermal design power (TDP) of up to 95W. Its 120mm PWM fan operates at adjustable speeds between 650 and 1,800 RPM, allowing users to balance noise and airflow effectively. On the other hand, the Assassin X offers a higher performance level with its 2000 RPM PWM fan and four heat pipes designed with AGHP technology for improved heat dissipation. This makes the Assassin X potentially more effective in cooling high-performance CPUs, particularly those exceeding 95W TDP.
Fan Technology
Fan technology is a critical aspect of CPU coolers, and both the i70C and the Assassin X bring unique features to the table. The i70C's 120mm PWM fan is designed for longevity and offers a silent operation, contributing to a quiet computing experience. Conversely, the Assassin X's fan not only operates at a higher speed of 2000 RPM but also includes silicone corner pads to minimize noise during operation. This combination of high performance and noise reduction technology positions the Assassin X as a superior option for users who prioritize both cooling efficiency and quiet performance.
Compatibility
In terms of compatibility, both coolers are designed to fit Intel LGA 1700 and 1851 sockets, but the i70C takes the lead in versatile compatibility for low-profile chassis. Its compact height of just 70mm allows it to fit easily into tight spaces, making it an excellent choice for small form factor builds. The Assassin X, while compatible with various Intel and AMD sockets (including AM4 and AM5), requires more vertical space and might not fit in all cases. Therefore, users with specific build constraints may find the i70C to be a more suitable option.
Pricing
Pricing is a crucial consideration for many consumers. The Cooler Master i70C is priced at $19.49, making it about 17% cheaper than the Thermalright Assassin X, which retails for $22.90. This price difference could be significant for budget-conscious buyers looking for a reliable CPU cooler without breaking the bank. While both coolers offer good value for their features, the i70C may attract those who prioritize cost-effectiveness.
Installation Process
The installation process can heavily influence the user experience, and both coolers have made strides in simplifying this aspect. The i70C features redesigned brackets that facilitate easier installation on LGA 1700 and 1851 platforms. This user-friendly design is particularly beneficial for those who may not have extensive experience with CPU cooler installations. On the other hand, the Assassin X, while not explicitly detailed in its installation process, accommodates a wide range of sockets, which may require a more complex setup. Overall, the i70C's simplified installation could be more appealing to novice users.
Overall Durability
Durability is essential for ensuring long-term performance in CPU coolers. The i70C is built with durable materials, including aluminum and copper, ensuring reliable heat dissipation over time. Its PWM fan is designed for longevity, contributing to its overall robustness. Similarly, the Assassin X employs high-quality PBT+PC materials and features an S-FDB bearing to minimize fan blade shaking. Both coolers are built to last, but the performance and durability of the Assassin X, especially in high-temperature scenarios, may give it an edge for enthusiasts seeking longevity under heavy loads.
Which should you buy?
Choosing between the Cooler Master i70C and the Thermalright Assassin X 120R ultimately depends on your specific needs and preferences. If you prioritize a compact design and budget-friendly price, the i70C is a solid choice at $19.49, offering good cooling performance for low-profile systems. However, if you require superior cooling capabilities and are willing to invest a bit more for enhanced performance and aesthetics, the Assassin X, priced at $22.90, could be the better option. Both coolers have their strengths, but understanding your build requirements and cooling needs will guide you to the right decision.

