Thermalright Peerless Assassin 140 SE ARGB Dual-Tower CPU Cooler

Thermalright Peerless Assassin 140 SE ARGB is a dual-tower air CPU cooler with six heat pipes and two PWM fans. It lists support for AM4 and AM5, plus several Intel LGA sockets, making socket and case clearance the key checks before buying.

At a glance

Dual-tower heatsink pairs six heat pipes with one 120 mm and one 140 mm PWM fan.
PWM fans are described as adjusting speed in response to motherboard temperature.
ARGB lighting uses a listed +5V 3-pin connector.
Installation accessories are stated to be supplied. AMD installation uses the original motherboard backplane.

Price

€39.51Save 20%

Reference price: ~~€49.39~~

Price checked: 13 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

ARCTIC MX-4 Thermal Paste for All Processors (CPU, GPU-PC, PS4, Xbox), 4 G, Very High Thermal Conductivity Long Durability, Safe Application, Non-Conductive, Non-Capacitive

€13.05

AMD Ryzen™ 7 9800X3D 100001084WOF

€394.89

Pros and cons

Pros

Two different-size PWM fans provide motherboard-controlled fan speed adjustment.
Socket support includes recent AMD AM4/AM5 and Intel LGA 1851/1700 platforms.
ARGB lighting is specified alongside the standard fan PWM connection.

Cons

The listed cooler dimensions are 140 x 160 x 158 mm, so verify case and component clearance before choosing this dual-tower design.

Technical specifications

21 specifications

Identity
Brand	Thermalright
Model	Peerless Assassin 140 SE ARGB

Cooling and fans
Cooling method	Air
Heat pipes	6 fully electroplated anti-oxidation heat pipes
120 mm fan speed	1850RPM ± 10%
140 mm fan speed	1500RPM ± 10%
120 mm fan airflow	88.89 CFM
140 mm fan airflow	77.8CFM
120 mm fan noise	≤ 29.5 dbA
140 mm fan noise	≤ 25.6 dbA
Fan connector	4pin PWM
Lighting connector	+5V 3PIN ARGB
Rated heat dissipation	275W

Compatibility and dimensions
Supported Intel sockets	LGA 1851/1700/1150/1151/1155/1156/1200
Supported AMD sockets	AM4/AM5
Cooler dimensions	140 x 160 x 158 mm (with fan)
120 mm fan dimensions	120 x 120 x 28 mm
140 mm fan dimensions	140 x 140 x 27 mm

Materials and connections
Material listed	Aluminum
Power connector type	4-Pin
Voltage	12 Volts (AC)

What to know before buying

Listing details to confirm

The listing gives a 275W heat-dissipation rating and an aggregate details-table noise figure of 29.5 Decibels, while its fan-specific specifications state different speeds, airflow and noise for the 120 mm and 140 mm fans. Treat the heat rating and aggregate noise figure as listing claims, not verified performance. Dimensions also appear in differing formats. Confirm the selected version's dimensions, fan specifications and required socket mounting before purchase. AMD installation is stated to require the original motherboard backplane.

What’s in the box

Included

CPU cooler

Who is it for?

A good fit for

Desktop builders seeking a dual-tower air cooler with two PWM fans and listed support for AM4/AM5 or compatible Intel sockets.
Builders adding a 5V 3-pin ARGB lighting connection to a compatible system.

Less suited to

Buyers who cannot confirm clearance for the listed 140 x 160 x 158 mm cooler dimensions.
Systems whose motherboard lacks the required socket mounting support or a compatible 5V 3-pin ARGB connection when lighting control is required.

Thermalright Peerless Assassin 140 SE ARGB Dual-Tower CPU Cooler · photo 2 — Additional product photo 2

Frequently asked questions

Which CPU sockets are listed as compatible?

The listing names AMD AM4/AM5 and Intel LGA 1851, 1700, 1150, 1151, 1155, 1156 and 1200. Check the mounting requirements for your exact motherboard.

What are the cooler dimensions?

The description gives 140 x 160 x 158 mm with the fan, while the details table gives 14L x 16W x 15.8H centimetres. Confirm clearances and the selected listing's dimensions before installation.

Does the cooler include ARGB lighting?

The listing describes two ARGB fans and specifies a +5V 3-pin lighting connector. Confirm that your motherboard or lighting controller supports that connector.

What is needed for AMD installation?

The listing says to use the original motherboard backplane for AMD installation, in addition to the supplied installation accessories.