Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler

In this review the Thermalright Peerless Assassin 120 SE ARGB is examined as a midtower air cooler aimed at PC builders who want strong thermal performance without moving to an AIO. The bottom line: it is best for enthusiasts and mainstream gamers who need effective cooling for 120 to 245W TDP CPUs and appreciate vivid lighting, since the cooler combines a double tower aluminum heatsink, six heat pipes with AGHP technology and dual PWM fans to deliver consistent temperature drops and an attractive ARGB look.

Key Features

• Dual tower aluminum heatsink: The double tower design increases fin area so the cooler can dissipate heat more efficiently under sustained loads.
• Six heat pipes with AGHP: Six pure copper sintered heat pipes use AGHP technique to reduce inverse gravity effects and improve heat transfer in different orientations.
• Dual TL-C12C-S PWM fans: Two 120mm PWM fans deliver up to 66.17 CFM of airflow with a 1500rpm nominal speed to balance cooling and acoustics.
• ARGB lighting: Colorful ARGB illumination provides customizable aesthetics that match gaming builds and RGB ecosystems.
• Broad socket support: Included metal fasteners and mounting plates support Intel LGA1700/1200/115x/1155/1851 and AMD AM4/AM5 for wide compatibility.
• Memory clearance: The cooler leaves room for RAM, making installation compatible with taller memory modules in most setups.

Who It's For

This cooler is well suited to DIY builders and gamers running mainstream to highend desktop CPUs who want air cooling performance comparable to some AIOs while retaining easier maintenance and lower risk. It is a good match for users who value ARGB lighting and a compact footprint that still leaves room for RAM modules.

It is less appropriate for extremely tight smallformfactor cases where a tall dual tower cooler cannot fit, or for users who need utterly silent operation at peak loads since fan noise varies by system and workload.

Pros & Cons

Pros

• Strong thermal performance that can lower CPU temperatures by double digits compared with stock coolers.
• Attractive ARGB lighting and a sleek aluminum cover that improve case aesthetics.
• Wide socket compatibility with included metal fasteners for Intel and AMD platforms.
• Good value for money versus higherpriced premium coolers.

Cons

• Noise reports are mixed; some users find it quiet while others experience noticeable fan noise under load.
• Height and dual tower layout may limit fitment in very compact cases.

Specifications

Model	PA120 SE ARGB
Dimensions	125 x 135 x 155 mm
Heat sink material	Aluminum with pure copper base
Heat pipes	6 pure copper sintered heat pipes
Fans	2 x TL-C12C-S 120 x 120 x 25 mm PWM
Fan speed / Airflow	1500 rpm nominal / 66.17 CFM (max)
Noise level	25.6 dB(A)
Supported sockets	Intel LGA1700/1200/115x/1155/1851, AMD AM4/AM5

Our Verdict

The Peerless Assassin 120 SE ARGB is a compelling air cooler for builders who want strong cooling, broad socket support and eyecatching ARGB without the complexity of liquid loops. It delivers excellent value and sensible engineering for CPUs in the 120 to 245W range, although buyers in extremely compact cases or those who demand the quietest possible fans should check fit and acoustics first.

Frequently Asked Questions

Will this cooler fit my AM5 motherboard?
Yes. The package includes mounting plates and metal fasteners for AMD AM4 and AM5 sockets to ensure proper installation.

How loud are the fans under load?
Noise varies by system; typical operation is moderate but some users report audible noise at higher fan speeds driven by heavy CPU loads.

Does it block memory slots?
Designed with RAM clearance in mind, the cooler leaves room for most memory modules, though very tall RAM with large heatsinks should be checked for fit.