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SCYTHE Big Shuriken 4 Low Profile CPU Cooler, 4.7" vs Thermalrlght Peerless Assassin 120 SE CPU Air

Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on noise level and cooling.

The SCYTHE Big Shuriken 4 is ideal for compact builds, while the Thermalrlght Peerless Assassin 120 SE offers superior cooling performance and quieter operation.

Why SCYTHE Big Shuriken 4 Low Profile CPU Cooler, 4.7" is better

Compact Size

Better for low-profile builds

Price

Slightly higher price at $32.99

Noise Level

Operates at 31.78 dB, which is quiet for its class

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Cooling Performance

Higher cooling capacity with dual fans

Noise Level

Quieter operation at 25.6 dB

Compatibility

Supports more Intel sockets

Overall score

SCYTHE Big Shuriken 4 Low Profile CPU Cooler, 4.7"
78
Thermalrlght Peerless Assassin 120 SE CPU Air
85

Specifications

SpecSCYTHE Big Shuriken 4 Low Profile CPU Cooler, 4.7"Thermalrlght Peerless Assassin 120 SE CPU Air
Cooling Capacity200WN/A
Noise Level31.78 dB25.6 dB
Socket SupportLGA 1851, AM5LGA 1150/1151/1155/1156/1200/1700, AM4/AM5
Fan SpeedN/A1550 RPM
AirflowN/A66.17 CFM

Dimension comparison

SCYTHE Big Shuriken 4 Low Profile CPU Cooler, 4.7"Thermalrlght Peerless Assassin 120 SE CPU Air

Introduction to the CPU Coolers

When selecting a CPU cooler, compatibility, cooling performance, and noise levels are crucial considerations. In this comparison, we will examine the SCYTHE Big Shuriken 4 Low Profile CPU Cooler and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler. Both options are priced closely, at $32.99 and $32.90 respectively, making them compelling choices for different setups.

Design and Dimensions

The SCYTHE Big Shuriken 4 has a compact design measuring 4.7" x 4.8" x 2.6", ideal for low-profile PC builds, including Mini-ITX cases. In contrast, the Thermalrlght Peerless Assassin 120 SE is larger, with dimensions of 125mm x 135mm x 155mm, accommodating a dual tower configuration for enhanced cooling. The SCYTHE's low-profile stature allows for better compatibility with smaller cases, while the Thermalrlght's bulk provides a more robust cooling solution, albeit at the cost of case compatibility.

Cooling Performance

The SCYTHE Big Shuriken 4 boasts six heat pipes designed to cool efficiently, reportedly faster than its predecessor, the Shuriken 3. It supports a cooling capacity of up to 200W, making it suitable for various processors. On the other hand, the Thermalrlght Peerless Assassin 120 SE also features six 6mm heat pipes combined with dual 120mm fans that can deliver a rated airflow of 66.17 CFM. With its AGHP technology, it offers stable performance and effective heat exchange, catering to users with higher thermal demands.

Noise Levels

Noise levels can significantly impact your PC's overall experience. The SCYTHE Big Shuriken 4 operates at a noise level of 31.78 dB, which is relatively quiet for a CPU cooler in its class. In comparison, the Thermalrlght Peerless Assassin 120 SE offers a quieter performance, with a maximum noise level of 25.6 dB. This difference of approximately 6 dB might be a decisive factor for users who prioritize a silent operation, especially in home or office environments.

Compatibility

Compatibility is a critical factor when choosing a CPU cooler. The SCYTHE Big Shuriken 4 supports Intel LGA 1851 and AMD AM5 sockets, making it versatile for various builds. The Thermalrlght Peerless Assassin 120 SE enhances compatibility further, supporting a wider range of Intel sockets, including LGA 1150, 1151, 1155, 1156, 1200, and 1700, as well as AMD AM4 and AM5. However, users must ensure that their existing motherboard backplate is used for installation when using the Peerless Assassin on AM4 and AM5 platforms.

Installation Ease

Ease of installation can vary significantly between CPU coolers. The SCYTHE Big Shuriken 4 is designed with simplicity in mind, allowing for straightforward installation in compact spaces. Conversely, the Thermalrlght Peerless Assassin 120 SE employs an SS2 install system that may require additional steps to ensure proper mounting, given its size and dual tower design. Users with limited experience might find the installation process for the SCYTHE to be more user-friendly.

Aesthetic Appeal

Aesthetic preferences can influence cooler selection, especially for builds with transparent cases. The SCYTHE Big Shuriken 4 features a minimalist design that suits various setups while maintaining a low profile. In comparison, the Thermalrlght Peerless Assassin 120 SE sports a more striking appearance with its anodized brushed black top cover and a dual-fan configuration. This cooler not only performs well but also enhances the visual appeal of a gaming or high-performance rig.

Price Comparison

The pricing of these CPU coolers is very competitive. The SCYTHE Big Shuriken 4 is available for $32.99, while the Thermalrlght Peerless Assassin 120 SE is slightly cheaper at $32.90, making it about 0.27% less expensive. This minor price difference may not significantly sway buyers, but it may influence those on a tight budget. Both coolers offer excellent value considering their features and performance.

Which should you buy?

Ultimately, the choice between the SCYTHE Big Shuriken 4 Low Profile CPU Cooler and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler hinges on individual needs and system compatibility. If you require a compact cooler that excels in low-profile builds and provides decent cooling with moderate noise, the SCYTHE Big Shuriken 4 is an excellent choice. However, if you're looking for superior cooling performance, quieter operation, and compatibility with a broader range of sockets, the Thermalrlght Peerless Assassin 120 SE stands out as the better option. Consider your specific requirements, case size, and personal preferences to make the best decision.