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Thermalright · Air · 158 mm tall

Thermalright Peerless Assassin 140 White

2 fans · 25.6 dBA

Performance
81%
Perf / price
82
Acoustics
74
Amazon
$43
$43
Available on Amazon Updated Aug 30, 2026 Prime FBA
Performance81.0%
Performance / price82.3
Acoustics74.2
$43 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 140 White at a glance

The Thermalright Peerless Assassin 140 White is a Air cooler listed as 158 mm tall. It is listed with 2 120 mm fans.

Review-derived relative cooling performance is 81.0%. Recorded noise is 25.6 dBA, for an acoustics score of 74.2. Airflow is listed at 66.2 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 158 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 $43, performance / price is 82.3. 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 140 White
Warranty
5 years
Launch price
Amazon price
$43
Amazon availability
Available
Price updated
Aug 30, 2026

Cooling type & fit

Type
Air
Size class
158 mm tall
Height
158 mm
Cooler dimensions
140 x 132 x 158 mm

Value

Amazon price
$43
Relative performance
81.0%
Performance / price
82.3
Acoustics
74.2

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
1500 rpm
Noise
25.6 dBA
Airflow
66.2 CFM
Acoustics score
74.2

Features

RGB lighting
No
Thermal paste included
No
Display
0
Color
White

Amazon

Price history

Nearby performance

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Discussion

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Vendor copy

Amazon listing details

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

[Better Heat Dissipation] The cooler is mainly composed of a twin-tower body with symmetrical mecha-shaped fins + pure copper six heatpipes + high-performance dual fans. The pure copper base senses the CPU temperature, then disperses the temperature from the heatpipes to the large-area aluminium fins, and then the 1500RPM high-volume dual fans dissipate the heat to achieve a good heat dissipation effect.

[Optimised Body Details] The body of the radiator features a white nano-painted layer, a combination of white-painted buckled FIN aluminium fins and heatpipes, and a precision reflow soldered micro-engraved copper base to form the cpu double towers cooler.

[158mm Height] The height of the cpu cooler is 158mm, which is suitable for large and medium-sized chassis, and is compatible with the installation of high-marshal memory and graphics cards, and the all-aluminium fins of the main body can bring the maximum cooling area.

[Product Specifications] Model: PA140 White; CPU cooler size: 140 (L) x 157 (W) x 158 (H) mm (5.51 x 6.18 x 6.22 inches); Heatsink material: Aluminium, CPU cooler is equipped with all-metal fasteners with SS2 buckle system, multiple specifications adapted to be compatible with a wide range of CPU model coolers, easier to install, dual tower dual Dual tower and dual fans for more powerful cooling.

[Compatibility] CPU cooler slot support: Intel: LGA1150/1151/1155/1156/1200/1700/1851; AMD: AM4/AM5; for different CPU slot platforms, the cooler's mounting kit provides the appropriate mounting plate or fasteners, can be combined with the installation instructions or follow the tutorials to Install.