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Thermalright Assassin King 120 SE White ARGB CPU vs Thermalright Phantom Spirit 120 SE Black CPU

Updated August 2026 — Thermalright Phantom Spirit 120 SE Black CPU leads on design and cooling performa.

The Thermalright Phantom Spirit offers superior cooling performance and advanced features, while the Assassin King is a budget-friendly option. Choose based on your cooling needs and budget.

Why Thermalright Assassin King 120 SE White ARGB CPU is better

Price

Assassin King is significantly cheaper at $19.82.

Design

Sleek white design with ARGB lighting.

Installation

Easier installation process for beginners.

Why Thermalright Phantom Spirit 120 SE Black CPU is better

Cooling

Phantom Spirit has 7 heat pipes for better cooling.

Performance

Advanced AGHP technology enhances heat dissipation.

Build Quality

Premium materials and construction for durability.

Overall score

Thermalright Assassin King 120 SE White ARGB CPU
75
Thermalright Phantom Spirit 120 SE Black CPU
85

Specifications

SpecThermalright Assassin King 120 SE White ARGB CPUThermalright Phantom Spirit 120 SE Black CPU
Price$19.82$39.90
Fan Speed1550 RPM1500 RPM
Noise Level≤25.6 dB(A)≤25.6 dB(A)
Socket SupportLGA1700/AM4LGA1851/AM4
Heat Pipes57

Dimension comparison

Thermalright Assassin King 120 SE White ARGB CPUThermalright Phantom Spirit 120 SE Black CPU

Pricing Comparison

The Thermalright Assassin King 120 SE White ARGB CPU Air Cooler is priced at $19.82, while the Thermalright Phantom Spirit 120 SE Black CPU Cooler costs $39.90. This makes the Assassin King about 50% cheaper than the Phantom Spirit, providing a significant cost advantage for users looking for budget-friendly options without sacrificing quality. The lower price of the Assassin King may attract those who are new to PC building or looking to save on their cooling solution.

Cooling Performance

When it comes to cooling performance, the Thermalright Phantom Spirit boasts a more robust design with seven heat pipes compared to the Assassin King's five. The Phantom Spirit is engineered with advanced AGHP upgraded technology, which enhances its heat dissipation capabilities. Both coolers feature S-FDB bearings, ensuring a long service life, but the additional heat pipes in the Phantom Spirit suggest a superior thermal performance during heavy workloads. This difference may be crucial for gamers or content creators who push their CPUs to the limit.

Design and Aesthetics

The aesthetic appeal of a cooler can significantly impact a build's overall look. The Assassin King features a sleek white design with ARGB lighting, making it a visually striking choice for those who prefer a bright, clean appearance. In contrast, the Phantom Spirit offers a more understated look with its black finish and dual PWM fans. Depending on your build theme, one may suit your needs better than the other. The color and lighting effects of the Assassin King could create a vibrant atmosphere, while the Phantom Spirit's design might appeal to those seeking a more sophisticated appearance.

Size and Compatibility

In terms of dimensions, the Thermalright Assassin King measures 120mm x 73mm x 148mm, while the Phantom Spirit is slightly larger at 125mm x 135mm x 154mm. Both coolers are compatible with a range of CPU sockets, including Intel LGA1700 and AMD AM4. However, the larger size of the Phantom Spirit might affect compatibility with smaller cases. Users should consider their case dimensions to ensure a proper fit, especially if opting for the bulkier Phantom Spirit.

Noise Levels

Both the Assassin King and Phantom Spirit are designed to operate quietly, with noise levels rated at or below 25.6 dB(A). This is a crucial consideration for users who prioritize a silent working environment. The PWM fans in both coolers help manage noise by adjusting speeds based on temperature requirements. Therefore, regardless of the choice, both options will deliver efficient cooling without excessive sound, appealing to gamers and professionals alike.

Installation and Ease of Use

The installation process for both coolers is designed to be user-friendly, with Thermalright providing necessary mounting hardware for different CPU sockets. The Assassin King includes metal fasteners for both Intel and AMD platforms, ensuring compatibility and ease of installation. The Phantom Spirit also offers corresponding mountings but requires the original motherboard backplane for AMD installations. Users may find the Assassin King's installation slightly easier due to its straightforward mounting system, making it an appealing choice for beginners.

Brand Reputation

Thermalright has established itself as a reputable brand in the cooling industry, with over 20 years of experience. Both coolers benefit from the brand’s commitment to quality and innovation. The Assassin King, being more affordable, allows users to experience Thermalright's engineering without a hefty investment. Meanwhile, the Phantom Spirit, with its advanced features and premium build, serves as a testament to Thermalright’s dedication to high-performance cooling solutions.

Which should you buy?

Choosing between the Thermalright Assassin King 120 SE White ARGB CPU Air Cooler and the Thermalright Phantom Spirit 120 SE Black CPU Cooler largely depends on your specific needs and budget. If you are looking for an economical option that still provides reliable performance, the Assassin King is an excellent choice at just $19.82. However, if top-tier cooling performance is your priority and you are willing to invest a bit more—around $39.90—the Phantom Spirit offers advanced features that justify the higher price. Ultimately, your decision should align with your cooling requirements, aesthetic preferences, and budget constraints.