Thermalright Peerless Assassin 120 SE Black CPU Air Cooler

The Thermalright Peerless Assassin 120 SE Black is a dual-tower air cooler with six heatpipes and two PWM fans. Its stated 155 mm height and broad socket list make case clearance and the exact motherboard socket key checks before choosing it.

At a glance

Dual-tower heatsink paired with six copper heatpipes and two 120 mm fans.
The listing describes a Y-shaped adapter for synchronous speed control of both fans.
Listed at 155 mm tall, so confirm the CPU cooler clearance supported by your case.

Price

€38.71Save 20%

Reference price: ~~€48.39~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Two fans and a six-heatpipe dual-tower design provide a substantial air-cooling arrangement.
The stated socket range covers several AMD and Intel desktop platforms.
The included Y-shaped adapter is described as enabling synchronous fan-speed control.

Technical specifications

16 specifications

Identity
Brand	TR-Thermalright
Model	Peerless Assassin 120 SE Black

Cooling and fans
Cooling method	Air
Heatpipes	6 x 6 mm pure copper heatpipe
Fan configuration	dual fans
Fan size	120 x 120 x 25 mm
Maximum rotational speed	1550 RPM
Airflow	66.17 Cubic Feet Per Minute
Noise level	25.6 Decibels
Power	4.8 watts
Voltage	12 Volts (DC)
Power connector	4-Pin

Dimensions and materials
Dimensions	13.5L x 12.5W x 15.5H centimetres
Material listed	Aluminum

Compatibility
Compatible CPU sockets stated in listing	AMD: AM4/AM5, Intel lga1851/1700/1150/1151/1155/1156/1200
Compatible device	Desktop

What to know before buying

Listing details to confirm

The listing describes mounting on AM4/AM5 and Intel LGA1851/1700/1150/1151/1155/1156/1200, while the title names only AM5/AM4 and LGA1851/1700/1150/1151. Confirm your exact socket and board requirements. The listing says AMD installation requires the motherboard's original backplate, which is not included. The stated 155 mm height should be checked against case clearance.

What’s in the box

CPU air coolerIncluded
CPU fanCheck selected pack
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Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Desktop builders seeking a dual-tower air cooler with two fans and support for one of the listed CPU sockets.
Buyers whose case provides clearance for a cooler stated to be 155 mm tall.

Less suited to

Builders who need a confirmed fit without checking case clearance or exact motherboard socket support.

Thermalright Peerless Assassin 120 SE Black CPU Air Cooler · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.9 / 5 · 16 ratings

5 stars86%86%
4 stars14%14%
3 stars0%0%
2 stars0%0%
1 star0%0%

The available rating distribution is largely five-star, with the remainder four-star. This is a small aggregate sample and includes no written feedback here, so it cannot establish particular strengths, complaints or cooling performance. The listed dual-tower, two-fan configuration may suit buyers seeking this style of air cooler, but the ratings do not verify its results in a specific build.

Frequently asked questions

Which CPU sockets are listed as compatible?

The feature listing states AMD AM4 and AM5, and Intel LGA1851, 1700, 1150, 1151, 1155, 1156 and 1200. The title gives a shorter list, so verify your exact socket against the selected listing.

How much case clearance does it need?

The listed height is 15.5H centimetres, also described as 155 mm. Compare that with your case's CPU cooler clearance before buying.

Does AMD installation need a backplate?

The listing says AMD installation uses the motherboard's original backplate and that the backplate is not included.

Are two fans included?

The title and feature text describe two fans, and the included-components field lists a CPU fan in the singular. Check the selected listing to confirm the exact fan bundle.