Thermalright Assassin X120 Refined SE CPU Air Cooler, 4 Heat Pipes

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Product guide

Thermalright Assassin X120 Refined SE CPU Air Cooler, 4 Heat Pipes

Thermalright Assassin X120 Refined SE is a single-fan CPU air cooler with four AGHP heat pipes and a 120 mm PWM fan. Its listed 148 mm height and broad socket support suit desktop builds where case clearance and exact CPU socket compatibility have been confirmed.

At a glance

Four 6 mm heat pipes use the listing's AGHP design, which is described as intended to reduce orientation effects.
The included TL-C12C fan has PWM control and a four-pin connector.
The listing names AMD AM4 and AM5 plus a range of Intel sockets, including LGA 1851 and 1700.
The stated 148 mm height makes case CPU-cooler clearance an important fit check.

Price

$16.11Save 10%

Reference price: ~~$17.90~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Broad listed socket compatibility can make the cooler suitable for upgrades across supported AMD and Intel platforms.
A 120 mm PWM fan and four heat pipes provide an air-cooling setup without a liquid-cooling loop.
Customer feedback reports useful cooling and quiet operation under normal loads, including on 65 W CPUs.

Technical specifications

14 specifications

Identity
Brand	Thermalright
Model	AX120 Refined SE

Dimensions and installation
Dimensions listed	4.72"L x 2.8"W x 5.83"H
Weight listed	644 g
Supported sockets	Intel:1150/1151/1155/1156/1200/1700/17XX/1851,AMD:AM4 /AM5

Cooling and fan
Heat pipes	4×6mm
Fan model	TL-C12C
Fan size	120x120x25mm (4.72x4.72x0.98 inches)
Fan speed	1550rpm±10%
Airflow	66.17CFM(MAX)
Power connector	4pin
Cooling method	Heat pipe and fan-based

Materials
Material listed	Aluminium,Aluminum,Metal,Silicone
Heat sink material	aluminum

What to know before buying

Listing details to confirm

The product description lists 125(L)x71(W)x148(H)mm and 0.645kg, while the details list dimensions of 4.72"L x 2.8"W x 5.83"H and weight of 644 g. Fan speed, airflow and noise are also given with maximum or tolerance notation in the feature text but without it in details. Confirm the exact revision and listing specifications before purchase. The explicit contents list names only a CPU cooler, while other listing text mentions thermal paste and mounting parts, so confirm what is included. Check case clearance and the exact socket mounting hardware for your build.

What’s in the box

CPU coolerIncluded
Thermal pasteCheck selected pack
Mounting hardwareCheck selected pack

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

Who is it for?

A good fit for

Desktop builders needing an air cooler for one of the listed AMD AM4/AM5 or Intel sockets.
Buyers replacing a stock cooler in a case with at least the stated 148 mm cooler clearance.
Users prioritizing an air-cooling configuration with a PWM fan and four heat pipes.

Less suited to

Builders whose case has less than 148 mm of CPU-cooler clearance.
Anyone needing confirmed compatibility with a socket or an explicit package bundle not listed here.

Thermalright Assassin X120 Refined SE CPU Air Cooler, 4 Heat Pipes · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 1,863 ratings

5 stars85%85%
4 stars10%10%
3 stars3%3%
2 stars0%0%
1 star2%2%

Customer feedback describes lower temperatures and good performance, including with 65 W CPUs, and reports quiet operation under normal loads. Some customers find installation straightforward, while opinions about the mounting system are mixed. For a cooler whose listing specifies four heat pipes and a 120 mm PWM fan, these reports may be relevant to everyday desktop builds, but they do not establish results for every CPU, case or workload.

Positive themes

Customers report effective cooling, quiet operation under normal loads, and straightforward installation.

Mixed feedback

Feedback on the mounting system is mixed, with some finding it user-friendly and others describing installation as difficult.

Frequently asked questions

Which CPU sockets are listed as compatible?

The listing names AMD AM4 and AM5, and Intel 1150, 1151, 1155, 1156, 1200, 1700, 17XX and 1851. Confirm that the selected unit includes the correct mounting parts for your board.

Will it fit in my PC case?

The product is listed at 148 mm high. Compare that with your case's CPU-cooler clearance before buying.

What fan does it use?

The listing specifies a TL-C12C 120 mm PWM fan with a four-pin power connector. Listed fan figures include 1550rpm±10%, 66.17CFM(MAX) airflow and ≤25.6dB(A) noise.

Is thermal paste included?

One product description says thermal paste is included, but the explicit contents list names only a CPU cooler. Check the selected listing's package contents before relying on the paste being included.