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iUniker Active Cooler for Raspberry Pi 5 vs Thermalrlght Peerless Assassin 120 SE CPU Air

Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on heat pipes and width.

The iUniker Active Cooler is an economical choice for Raspberry Pi users, while the Thermalrlght Peerless Assassin is better suited for high-performance setups. Choose based on your specific cooling needs.

Why iUniker Active Cooler for Raspberry Pi 5 is better

Price

iUniker is significantly cheaper at $9.99.

Noise Level

iUniker operates at a quieter level below 18 dB.

Ease of Installation

iUniker has a simpler installation process.

Why Thermalrlght Peerless Assassin 120 SE CPU Air is better

Cooling Performance

Peerless Assassin is designed for high-performance cooling.

Compatibility

Peerless Assassin supports a wider range of CPU sockets.

Build Quality

Peerless Assassin has a more robust construction with dual fans.

Overall score

iUniker Active Cooler for Raspberry Pi 5
75
Thermalrlght Peerless Assassin 120 SE CPU Air
85

Specifications

SpeciUniker Active Cooler for Raspberry Pi 5Thermalrlght Peerless Assassin 120 SE CPU Air
Price$9.99$32.90
Noise Level18 dB25.6 dB
Cooling TypeActiveActive
Fan ControlPWMPWM
MaterialAluminumAluminum/Copper

Dimension comparison

iUniker Active Cooler for Raspberry Pi 5Thermalrlght Peerless Assassin 120 SE CPU Air

Overview of the Products

In this comparison, we will look at the iUniker Active Cooler for Raspberry Pi 5 and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler. The iUniker is priced at $9.99, making it about 70% cheaper than the Peerless Assassin, which retails for $32.90. While both products aim to improve thermal performance, they cater to different audiences and applications.

Design and Build Quality

The iUniker Active Cooler features an aluminum heatsink and a PWM fan designed specifically for the Raspberry Pi 5. Its lightweight and compact design allows for easy installation, making it a practical choice for hobbyists and developers. In contrast, the Thermalrlght Peerless Assassin 120 SE boasts an elaborate design with dual 120mm fans and six heat pipes. Its larger size and robust aluminum and copper construction make it suitable for high-performance gaming and workstation setups.

Cooling Performance

When it comes to cooling efficiency, the iUniker Active Cooler excels with its ability to lower CPU temperatures to under 56°C under stress. This performance is achieved thanks to its aluminum heatsink and superior airflow from the PWM fan. However, the Peerless Assassin is engineered for more demanding environments and features advanced AGHP technology, which allows for rapid heat exchange through its six copper heat pipes. Thus, while the iUniker is adequate for Raspberry Pi 5, the Peerless Assassin is built for more intense CPU loads.

Noise Level

The iUniker Active Cooler operates at a whisper-quiet level, with a noise rating below 18 dB. This makes it an ideal choice for environments where silence is paramount, such as home theaters or small workspaces. On the other hand, the Thermalrlght Peerless Assassin has a noise level rated at 25.6 dB, which is still relatively quiet for a high-performance cooler but noticeably louder than the iUniker. If noise is a crucial factor for your setup, the iUniker has a clear advantage.

Compatibility

The iUniker Active Cooler is designed exclusively for the Raspberry Pi 5, ensuring a perfect fit and hassle-free installation. It supports PWM speed control via the Raspberry Pi OS, allowing for seamless integration. Conversely, the Peerless Assassin is compatible with a broader range of CPU sockets, including Intel LGA 1700 and AMD AM4/AM5. This flexibility makes the Peerless Assassin a more versatile option for users with various motherboard setups.

Installation Process

Installation is straightforward with the iUniker Active Cooler, which comes with pre-applied thermal tape and screws, allowing users to set it up in minutes. This ease of installation is a significant benefit for those who may not be technically inclined. In contrast, the Thermalrlght Peerless Assassin may require more time and effort due to its complex structure and compatibility checks. Users must ensure their case and motherboard can accommodate this larger cooler, which could be a deterrent for some.

Price Comparison

The iUniker Active Cooler is priced at $9.99, which is significantly lower than the Thermalrlght Peerless Assassin's price of $32.90. This represents a price difference of about 70%. While the iUniker offers excellent value for those using a Raspberry Pi 5, the higher cost of the Peerless Assassin can be justified by its advanced features, broader compatibility, and superior cooling performance for more demanding applications.

Which should you buy?

Choosing between the iUniker Active Cooler and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs. If you are looking for an economical and efficient cooling solution specifically for the Raspberry Pi 5, the iUniker is hard to beat at just $9.99. However, if you need a high-performance cooler for a more robust CPU setup, the Thermalrlght Peerless Assassin offers features that justify its higher price tag of $32.90.