Thermalright Assassin X 120 SE AX120 SE CPU Air Cooler, 4 Heat Pipes

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Product guide

Thermalright Assassin X 120 SE AX120 SE CPU Air Cooler, 4 Heat Pipes

AX120: Thermalright Assassin X 120 SE is a single-fan tower-style CPU air cooler listed with four heat pipes, a 120 mm PWM fan and support for selected AMD and Intel sockets. Its 148 mm height and socket coverage make it a candidate for a standard desktop build, but check case clearance and the exact mounting hardware for your platform.

At a glance

Four 6 mm heat pipes use the listed AGHP design, which the manufacturer says addresses orientation-related effects.
The 120 mm TL-C12C fan has a 4-pin PWM connection and S-FDB bearing.
Mounting support is listed for AM4 and AM5 plus several Intel sockets, including LGA 1700 and 1851.
At 148 mm tall, the cooler requires a case with sufficient CPU-cooler clearance.

Price

€16.72Save 20%

Reference price: ~~€20.90~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Broad listed socket support covers a range of AMD and Intel desktop platforms.
The single 120 mm PWM fan and four heat pipes offer a conventional tower-cooler configuration.
The manufacturer states that mounting parts for the different socket platforms are provided.

Technical specifications

18 specifications

Identity
Brand	Thermalright
Model	AX120 SE

Cooling and fan
Cooling method	Air
Heat pipes	4 x 6 mm heat pipes
Fan model	TL-C12C
Fan dimensions	120 x 120 x 25 mm (4.72 x 4.72 x 0.98 inches)
Maximum rotational speed	1550 RPM
Airflow	66.17 Cubic Feet Per Minute
Noise level	25.6 Decibels
Fan connector	4-Pin
Voltage	12 Volts (DC)
Wattage	3.6 watts

Compatibility and dimensions
Listed sockets	Intel: 1150/1151/1155/1156/1200/1700/1851, AMD:AM4 /AM5
Cooler dimensions	12L x 7.1W x 14.8H centimetres
Weight listed	1.39 Pounds
Compatible devices	Desktop

Materials and protection
Material listed	Aluminum
Fan bearing	S-FDB

What to know before buying

The manufacturer claims a 20000-hour service life for the bearing. This is a stated service-life claim, not a guarantee of operating life.
The product description says TF-4 thermal compound is included, but no explicit package inventory is supplied. Check the selected listing for the contents.

Listing details to confirm

Listing details are inconsistent: the title identifies the AX120 SE, while a specification paragraph names AX120R SE. Dimensions are listed as 12L x 7.1W x 14.8H centimetres and elsewhere as 120 x 71 x 148 mm, and weight appears as both 1.39 Pounds and 0.645kg (1.42lb). The title socket list omits LGA 1155, 1156 and 1851, which appear in the compatibility text. Confirm the selected revision and socket mounting parts before ordering. The listed noise figure is a manufacturer claim, not an independent measurement.

What’s in the box

THERMALRIGHT TF-4 thermal compoundCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Desktop builders who need a tower air cooler compatible with one of the listed AMD or Intel sockets.
Buyers whose case supports a cooler up to the listed 148 mm height.
Users seeking a single 120 mm PWM fan cooler with four heat pipes.

Less suited to

Builders who need confirmed performance for a particular high-power processor. No processor power or measured cooling results are supplied.
Cases with less than 148 mm of CPU-cooler clearance.

Thermalright Assassin X 120 SE AX120 SE CPU Air Cooler, 4 Heat Pipes · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 891 ratings

5 stars85%85%
4 stars11%11%
3 stars3%3%
2 stars0%0%
1 star1%1%

Customer feedback reports effective temperature control, including for an Intel 14600KF, and positive impressions of quality and value. Noise opinions are mixed, with some customers finding it quiet and others disliking the sound. These impressions are useful context, but they do not establish cooling performance for every processor or noise levels in every build.

Positive themes

Customers report effective temperature control.
Customers describe the cooler's quality and value positively.

Mixed feedback

Customer opinions on noise vary, from very quiet to unpleasantly loud.

Frequently asked questions

Which CPU sockets are listed as compatible?

The compatibility text lists AMD AM4 and AM5, and Intel 1150, 1151, 1155, 1156, 1200, 1700 and 1851. The title gives a shorter list, so confirm the required mounting parts and selected revision before buying.

How tall is the cooler?

The listing gives a height of 14.8H centimetres and elsewhere states a height of 148 mm. Check your case's cooler-clearance limit.

Does it include thermal compound?

The product description claims THERMALRIGHT TF-4 thermal compound is included, but no explicit package inventory is provided. Confirm the selected listing's contents.

What fan does it use?

The listing names a TL-C12C 120 mm PWM fan with an S-FDB bearing and a maximum rotational speed of 1550 RPM.