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Thermalright · Air · 148 mm tall

Thermalright Assassin X 120 SE White

1 fan · 25.6 dBA

Performance
64%
Perf / price
175
Acoustics
74
Amazon
$16
$16
Available on Amazon Updated Aug 30, 2026 Prime FBA
Performance64.0%
Performance / price174.8
Acoustics74.2
$16 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 Assassin X 120 SE White at a glance

The Thermalright Assassin X 120 SE White is a Air cooler listed as 148 mm tall. It is listed with 1 120 mm fan.

Review-derived relative cooling performance is 64.0%. Recorded noise is 25.6 dBA, for an acoustics score of 74.2. Airflow is listed at 66 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 148 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 $16, performance / price is 174.8. 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 Assassin X 120 SE White
Warranty
5 years
Launch price
Amazon price
$16
Amazon availability
Available
Price updated
Aug 30, 2026

Cooling type & fit

Type
Air
Size class
148 mm tall
Height
148 mm
Cooler dimensions
120 x 46 x 148 mm

Value

Amazon price
$16
Relative performance
64.0%
Performance / price
174.8
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
1550 rpm
Noise
25.6 dBA
Airflow
66 CFM
Acoustics score
74.2

Features

RGB lighting
No
Thermal paste included
No
Display
0
Color

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.

[Brand Overview] Thermalright is a Taiwan brand with more than 20 years of development. It has a certain popularity in the domestic and foreign markets and has a pivotal influence in the player market. We have been focusing on the research and development of computer accessories. R & D product lines include: CPU air-cooled radiator, case fan, thermal silicone pad, thermal silicone grease, CPU fan controller, anti falling off mounting bracket, support mounting bracket and other commodities

[Product specification]AX120 SE WHITE; CPU Cooler dimensions: 125(L)x71(W)x148(H)mm (4.92x2.8x 5.83 inch);heat sink material: aluminum, CPU cooler is equipped with metal fasteners of Intel & AMD platform to achieve better installation

【PWM Fans】TL-C12CW; Standard size PWM fan:120x120x25mm (4.72x4.72x0.98 inches); fan speed (RPM):1550rpm±10%; power port: 4pin; Voltage:12V; Air flow:66.17CFM(MAX); Noise Level≤25.6dB(A), the fan pairs efficient cool with low-noise-level, providing you an environment with both efficient cool and true quietness

【AGHP technique】4×6mm heat pipes apply AGHP technique, Solve the Inverse gravity effect caused by vertical / horizontal orientation. Up to 20000 hours of industrial service life, S-FDB bearings ensure long service life of air-cooler radiators. UL class a safety insulation low-grade, industrial strength PBT + PC material to create high-quality products for you. The height is 148mm, Suitable for medium-sized computer case

【Compatibility】The CPU cooler Socket supports: Intel:1150/1151/1155/1156/1200/1700/17XX/1851,AMD:AM4 /AM5; For different CPU socket platforms, corresponding mounting plate or fastener parts are provided