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Thermalright · Air · 135 mm tall

Thermalright Peerless Assassin 120 Mini Black

1 fan · 25.6 dBA

Performance
63%
Perf / price
81
Acoustics
74
Amazon
$34
$34
Available on Amazon Updated Aug 30, 2026 Prime FBA
Performance63.0%
Performance / price80.6
Acoustics74.2
$34 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 Mini Black at a glance

The Thermalright Peerless Assassin 120 Mini Black is a Air cooler listed as 135 mm tall. It is listed with 1 120 mm fan.

Review-derived relative cooling performance is 63.0%. Recorded noise is 25.6 dBA, for an acoustics score of 74.2. Airflow is listed at 66.9 CFM. Warranty is 5 years.

Best fit: Compact or value builds where clearance, noise, and price outweigh peak thermal headroom.

Fitment and sockets

Tower height is 135 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 $34, performance / price is 80.6. 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 Mini Black
Warranty
5 years
Launch price
Amazon price
$34
Amazon availability
Available
Price updated
Aug 30, 2026

Cooling type & fit

Type
Air
Size class
135 mm tall
Height
135 mm
Cooler dimensions
125 x 110 x 135

Value

Amazon price
$34
Relative performance
63.0%
Performance / price
80.6
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
1
Fan speed
1500 rpm
Noise
25.6 dBA
Airflow
66.9 CFM
Acoustics score
74.2

Features

RGB lighting
No
Thermal paste included
No
Display
0
Color
BLACK

Amazon

Price history

Nearby performance

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Amazon listing details

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

[Brand Overview] Thermalright is a Taiwanese brand with more than 20 years of development history. It has a certain degree of popularity in the domestic and international markets, and has a decisive influence in the cooler market. We have been focusing on the research and development of computer accessories. The R&D product line includes: CPU coolers, CPU water cooling coolers, case fans, thermally conductive silicone grease, accessories and other products.

[AGHP Technology] 6x6mm heatpipes adopt AGHP upgraded 4th generation technology to solve the effect of anti-gravity caused by vertical/horizontal direction, and 6 pure black fully plated heatpipes, which will bring out the heat dissipation to a better level with the help of 12cm performance fans.

[PWM Fan] CPU Fan Model: TL-D12B; Standard Size PWM Performance Fan: 120x120x25mm (4.72x4.72x0.98 inches); Fan Speed (RPM): 1500rpm±10%; Power Port: 4-pin; Voltage: 12V; Air Flow: 66.87CFM (Max); Noise Level ≤ 25.6dB(A) The S-FDB bearing of CPU fan has an industrial life of up to 20,000 hours, which can ensure the service life of air-cooling radiator.

[Product Specifications] PA120 MINI BLACK; CPU cooling size: 125 (L) x 110 (W) x 135 (H) mm (4.92 x 5.31 x 5.31 inches); Cooler material: aluminium. The main body is fully blackened with antioxidant coating + CNC precision micro-engraved copper base, creating a black look with symmetrical mech-type fins.

[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 the machine.