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Thermalright AXP90 X36 Low Profile ITX CPU Cooler, vs Thermalright Peerless Assassin 120 SE V2 CPU

Updated August 2026 — Thermalright AXP90 X36 Low Profile ITX CPU Cooler, wins on size and noise level, Thermalright Peerless Assassin 120 SE V2 CPU wins on cooling performa and build quality.

The Thermalright AXP90 X36 is ideal for compact builds and quieter operation, while the Peerless Assassin 120 SE V2 excels in cooling performance for high-load scenarios.

Why Thermalright AXP90 X36 Low Profile ITX CPU Cooler, is better

Price

AXP90 X36 is significantly cheaper at $20.39

Size

AXP90 X36 has a compact 36mm height

Noise

AXP90 X36 operates at a quieter 22.4 DBA

Why Thermalright Peerless Assassin 120 SE V2 CPU is better

Cooling

Peerless Assassin 120 SE V2 has superior cooling performance

Heat Pipes

Peerless Assassin 120 SE V2 features 6 heat pipes

Fan Speed

Peerless Assassin 120 SE V2 has dual 120mm fans at 1850 RPM

Overall score

Thermalright AXP90 X36 Low Profile ITX CPU Cooler,
75
Thermalright Peerless Assassin 120 SE V2 CPU
85

Specifications

SpecThermalright AXP90 X36 Low Profile ITX CPU Cooler,Thermalright Peerless Assassin 120 SE V2 CPU
Max Noise22.4 DBA29.5 DBA
Socket SupportAM4/AM5, LGA1150/1151/1200/1700/1851AM4/AM5, LGA1851/1700
Cooling TypeLow ProfileDual Tower
Fan TypeSlim PWMDual 120mm PWM
Price$20.39$38.99

Dimension comparison

Thermalright AXP90 X36 Low Profile ITX CPU Cooler,Thermalright Peerless Assassin 120 SE V2 CPU

Overview of the Thermalright AXP90 X36 and Peerless Assassin 120 SE V2

The Thermalright AXP90 X36 is priced at $20.39, while the Peerless Assassin 120 SE V2 comes in at $38.99, making it about 17% more expensive. This price difference reflects their design and cooling capabilities. The AXP90 X36 is a low-profile ITX CPU cooler, ideal for compact builds, whereas the Peerless Assassin 120 SE V2 features a dual tower design aimed at high-performance cooling for gaming and multitasking.

Cooling Performance

The Thermalright Peerless Assassin 120 SE V2 has a significant edge in cooling performance due to its dual tower design and six heat pipes. It can effectively handle high-load scenarios, making it suitable for gamers and users who multitask frequently. In contrast, the AXP90 X36, with its four heat pipes and a maximum noise level of 22.4 DBA, is designed for quieter operation, but it may not match the aggressive cooling performance of the dual tower setup under heavy loads.

Design and Size

When it comes to design and size, the Thermalright AXP90 X36 stands out with its compact 36mm height, making it a perfect fit for small form factor cases. Its all-metal platform adds to durability and stability. On the other hand, the Peerless Assassin 120 SE V2 measures 125mm x 110mm x 155mm without fans, making it bulkier but allowing for better heat dissipation. Users with limited space will likely prefer the AXP90 X36, while those looking for enhanced performance might opt for the larger Peerless Assassin.

Noise Levels

In terms of noise levels, the AXP90 X36 operates at a maximum of 22.4 DBA, making it a quieter option for users who prioritize a peaceful computing environment. The Peerless Assassin 120 SE V2, while more powerful, has a noise level of 29.5 DBA at maximum fan speed, which is noticeably louder. If silence is essential for your setup, the AXP90 X36 could be the better choice.

Compatibility

Both coolers offer broad compatibility, supporting various AMD and Intel sockets. The AXP90 X36 is compatible with AMD AM4 and AM5, as well as Intel LGA1150, 1151, 1200, 1700, and 1851. Meanwhile, the Peerless Assassin 120 SE V2 supports AMD AM4 and AM5 along with Intel LGA1851 and 1700. This makes both coolers versatile options for modern builds, but the AXP90 X36 may have a slight advantage for users with older Intel systems.

Build Quality

Build quality is an essential aspect of any CPU cooler, and both models showcase Thermalright's commitment to quality. The AXP90 X36 features a nickel plating process for corrosion resistance, while the Peerless Assassin 120 SE V2 utilizes a C1100 pure copper base for efficient heat transfer. Both coolers are designed to withstand the rigors of long-term use, but the Peerless Assassin's dual tower structure and additional heat pipes provide a more robust solution for heavy workloads.

Price and Value

At $20.39, the Thermalright AXP90 X36 presents an excellent value for users seeking an affordable yet effective cooling solution. In contrast, the Peerless Assassin 120 SE V2, priced at $38.99, offers more advanced cooling capabilities, justifying its higher price for those who need it. The decision ultimately comes down to whether the user prioritizes cost savings or enhanced cooling performance.

Which should you buy?

Choosing between the Thermalright AXP90 X36 and the Peerless Assassin 120 SE V2 depends on your specific needs. If you require a compact, quieter cooler for a small form factor build, the AXP90 X36 at $20.39 is an excellent choice. However, if you're looking for superior cooling performance for gaming or heavy multitasking, the Peerless Assassin 120 SE V2, though about 17% more expensive at $38.99, is worth the investment.