Thermalright Peerless Assassin 120 CPU Air Cooler - HighPerformance

Our review of the Thermalright Peerless Assassin 120 finds it best suited for builders who want strong air cooling and striking ARGB lighting without spending on a liquid loop. The cooler combines a twintower aluminum heatsink with six sintered copper heat pipes and two 120mm TLC12WS PWM fans to deliver serious heat transfer across a claimed 9600cm2 dissipation area. Installers will appreciate the offset asymmetric layout that clears the first PCIe slot and leaves room for tall memory, while motherboard ARGB control keeps the lighting in sync.

Key Features

• Twin tower aluminum heatsink: Provides a large surface area for heat dissipation so sustained loads run cooler than many singletower designs.
• Six copper heat pipes with AGHP: The AGHP technique and sintered copper pipes reduce inversegravity effects, keeping heat transfer effective in different orientations.
• Dual TLC12WS PWM fans: Two 120x120x25mm PWM fans offer up to 1500 RPM and motherboard ARGB control for balanced airflow and customizable lighting.
• Offset asymmetric layout: The cooler is designed to fit without blocking the first graphics slot and leaves clearance for memory modules.
• White nanoscale finish: A sprayed white finish and electroplating reflow welding both improve corrosion resistance and present a clean, premium look.
• Broad socket support: Includes metal fasteners and mounting hardware for Intel and AMD mainstream and highend sockets for wide compatibility.

Who It's For

This cooler is aimed at PC builders who want a highcapacity air cooler for mid to high TDP CPUs and who care about case aesthetics and RGB synchronization. Gamers and content creators who run sustained CPU loads will benefit from the twin towers and six heat pipes, and builders who need clearance for a first PCIe slot or tall memory will find the layout convenient.

It is less suitable for very small cases or ultracompact ITX builds because of its 125 x 135 x 157mm footprint, and those seeking absolute silence at the lowest possible noise floor or the very highest overclocking headroom might prefer a larger custom CLC or highend liquid solution.

Pros & Cons

Pros

• Strong thermal performance from dual towers and six copper heat pipes for consistent cooling under load.
• ARGB lighting and highbrightness fan blades produce attractive, controllable illumination via motherboard sync.
• Thoughtful offset design preserves first PCIe slot and memory clearance for flexible builds.
• Good value with quality aluminum heatsink finish and included mounting hardware for Intel and AMD.

Cons

• Size can be a limitation in compact cases and receives mixed reactions from users concerned about clearance.
• Noise is subjective - some users report it very quiet while others find the fans moderately loud under full speed.

Specifications

Model	PA120 White ARGB
Dimensions	125(L) x 135(W) x 157(H) mm
Fans	2 x 120 x 120 x 25 mm TLC12WS, PWM, 4pin
Fan Speed / Noise	1500 RPM +/-10% / up to 25.6 dB(A)
Airflow	66.17 CFM (max)
Heat Pipes	6 sintered copper heat pipes with AGHP technology
Compatibility	Intel 1150/1151/1155/1156/1200/1700/17XX/2011/2066/1851 and AMD AM4/AM5

Our Verdict

The Peerless Assassin 120 is a compelling midrange air cooler that balances cooling capacity, visual flair, and installation flexibility. It delivers strong sustained performance for gaming and productivity rigs, offers motherboardsynchronized ARGB, and retains practical clearance for GPUs and memory, making it a good value pick for most mainstream and enthusiast builders.

Frequently Asked Questions

Will this cooler fit in compact cases?
Check your case CPU cooler clearance against the 157mm height; the cooler is relatively tall and may not fit small ITX cases.

Can I control the lighting from my motherboard?
Yes, the fans support ARGB and can be synchronized with compatible motherboard headers for unified lighting effects.

Is mounting hardware included for both Intel and AMD?
Yes, Thermalright supplies metal fasteners and mounting plates for a wide range of Intel and AMD sockets.