Skip to content

Thermalright · Air · 155 mm tall

Thermalright Peerless Assassin 120 SE Extrem

2 fans · 29.6 dBA

Performance
82%
Perf / price
95
Acoustics
64
Amazon
$38
$38
Available on Amazon Updated Aug 30, 2026 Prime FBA
Performance82.0%
Performance / price95.2
Acoustics64.2
$38 on Amazon Cooler table Compare this cooler

Check this cooler in a buildSelect a CPU and case first so socket, height, and radiator support can be evaluated. Start with the CPU

Written analysis

Thermalright Peerless Assassin 120 SE Extrem at a glance

The Thermalright Peerless Assassin 120 SE Extrem is a Air cooler listed as 155 mm tall. It is listed with 2 120 mm fans.

Review-derived relative cooling performance is 82.0%. Recorded noise is 29.6 dBA, for an acoustics score of 64.2. Airflow is listed at 82 CFM. Warranty is 5 years.

Best fit: Mainstream and performance desktop builds that need solid review-derived cooling performance.

Fitment and sockets

Tower height is 155 mm — check case cooler clearance before buying. Socket compatibility includes LGA 1700, LGA 1151, LGA 1155, LGA 1156, LGA 1200, LGA 1851, AM4, AM5. CPU block / cold plate: Copper.

Current value

At $38, performance / price is 95.2. Compare nearby coolers of the same type below; quieter acoustics and fitment can outweigh a small score gap.

Cooler data

Full specifications

Cooling type, fitment, sockets, fans, acoustics, features, and value in one technical sheet.

General

Manufacturer
Thermalright
Cooler
Thermalright Peerless Assassin 120 SE Extrem
Warranty
5 years
Launch price
Amazon price
$38
Amazon availability
Available
Price updated
Aug 30, 2026

Cooling type & fit

Type
Air
Size class
155 mm tall
Height
155 mm
Cooler dimensions
125 x 110 x 155mm

Value

Amazon price
$38
Relative performance
82.0%
Performance / price
95.2
Acoustics
64.2

Sockets & block

Socket compatibility
LGA 1700, LGA 1151, LGA 1155, LGA 1156, LGA 1200, LGA 1851, AM4, AM5
CPU block
Copper

Fans & acoustics

Fan size
120 mm
Fan count
2
Fan speed
1850 rpm
Noise
29.6 dBA
Airflow
82 CFM
Acoustics score
64.2

Features

RGB lighting
No
Thermal paste included
No
Display
0
Color

Amazon

Price history

Nearby performance

Similar coolers

Coolers close to Thermalright Peerless Assassin 120 SE Extrem on relative performance. Open the cooler table to sort, filter, and compare side by side.

Compare these in the cooler table

Discussion

Comments on Thermalright Peerless Assassin 120 SE Extrem

No comments yet.

Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

[Heat Dissipation Combination] The CPU heat sink is a dual tower dual fan structure, with a black anodized top plate, 6 fully electroplated anti-oxidation heat pipes, and a finely carved copper bottom. It is paired with an 1850RPM 120mm PWM fan, which can easily dissipate the CPU temperature and further improve the heat dissipation efficiency of the heat sink.

[Product Specifications] Model: Peerless Assassin 120 SE EXTREM, Size: 125x135x154mm, Heat Sink Material: Aluminum, Fan Size: 120x120x25mm, Fan Speed: 1850RPM+10%, Wind Pressure: 2.1MM H2O, Air Volume: 82CFM, Operating Noise ≤ 29.6dB (A), Fan Interface: 4PIN PWM, Combined with 2 PWM Fans, Can Bring Good Heat Dissipation Effect.

[154mm Heat Dissipation Height] The overall height of the radiator is 154mm, which is compatible with more chassis. The main body is made of all aluminum fins, which can provide a larger heat dissipation area

[Dual PWM Fans] Equipped with 120mm reversing fan blades, the dual fan has a speed of up to 1850RPM and an air volume of 82CFM, providing excellent heat dissipation. The fan has PWM function, which can adjust the speed according to the motherboard temperature without manual adjustment. The attached fan hook is fixed on the twin tower radiator.

[Wide Compatibility] Heat sink compatible with dual platform slots: Intel LGA 1851/1700/1150/1151/1155/1156/1200;AMD: AM4/AM5;The radiator comes with installation accessories, which can be installed according to the installation video or manual. (Note: Installing AMD platform requires using the original motherboard backplane for installation).

[Avoiding Memory Design] The heat sink adopts a chamfered design that avoids memory. When installing the fan, it is not blocked by the memory. If the memory height exceeds too much, the fan can be installed upwards. Twin tower style heat sink enhances heat dissipation performance.