Thermalright Peerless Assassin 140 White CPU Cooler - Dual-Tower

Our review of the Thermalright Peerless Assassin 140 White finds it best suited for builders who want serious air cooling in a clean white finish without moving to a liquid loop. The twin-tower layout, six pure copper heatpipes and dual 1500RPM PWM fans make the cooler a clear choice for mid-tower and larger cases where sustained thermal performance matters. Installers will appreciate the all-metal fasteners and compatibility with modern sockets, while those in very compact small-form-factor builds should check clearance before buying.

Key Features

• Twin-tower design: Two stacks of aluminium fins increase surface area so heat spreads faster and air moves through more cooling mass for lower sustained CPU temperatures.
• Six copper heatpipes: A pure copper base with six heatpipes quickly transfers heat from the CPU to the fin arrays for efficient dissipation under load.
• Dual PWM fans: Two 1500RPM fans provide high-volume airflow with PWM control so the cooler balances silence and performance depending on CPU load.
• White nano finish: The white-painted fins and painted heatpipes give a clean, coordinated look for white or light-themed builds while resisting oxidation.
• Wide compatibility: Mounting hardware covers Intel LGA 115x/1200/1700/1851 and AMD AM4/AM5, so it fits most current mainstream platforms with the included plates.
• 158mm height: At 158mm the cooler fits many mid-tower cases and leaves room for tall memory modules and most graphics cards in standard layouts.

Who It's For

The Peerless Assassin 140 White is aimed at PC enthusiasts and gamers building a mid-tower system who want substantial air cooling without the complexity of custom loops. It suits users running mid- to high-TDP CPUs who value quiet, consistent cooling and a white aesthetic.

It is not the best pick for very small SFF cases where the 158mm height or dual-tower width may conflict with case panels or cramped motherboard layouts. Builders who require extreme overclocking headroom or absolute lowest temperatures might prefer a larger AIO or custom loop instead.

Pros & Cons

Pros

• Strong thermal performance from the twin-tower layout and six copper heatpipes that move heat quickly to the fins.
• Quiet operation thanks to the dual PWM fans that ramp only as needed, keeping noise levels low under light loads.
• Good value and aesthetic appeal with a white nano-painted finish that fits modern builds.
• Broad socket compatibility and all-metal fasteners make installation secure once the mounting pieces are matched to the platform.

Cons

• The mounting system has mixed feedback from users, so expect some fiddling during install on certain motherboards.
• The 158mm height and dual-tower width may be too large for compact cases or for users with very tall memory modules in tight layouts.

Specifications

Model	PA140 White
Dimensions	140 x 157 x 158 mm
Height	158 mm
Heatpipes	6 pure copper heatpipes
Fins	White-painted aluminium fins
Fans	Dual PWM fans, 1500 RPM
Compatibility	Intel LGA1150/1151/1155/1156/1200/1700/1851, AMD AM4/AM5

Our Verdict

The Peerless Assassin 140 White is a well-rounded air cooler that delivers excellent value for builders who need dependable thermal performance and a clean white look. It shines in mid-tower systems where height and clearance are sufficient, offering quiet dual-fan operation and broad socket support. Pick this cooler if you want effective, reliable air cooling without moving to liquid cooling.

Frequently Asked Questions

Will this cooler fit my case?
Check your case CPU cooler clearance; the cooler is 158mm tall and best suited to mid and larger towers.

Is the mounting hardware included for my socket?
Yes, the package includes mounting plates and fasteners for Intel LGA115x/1200/1700/1851 and AMD AM4/AM5.

How loud are the fans?
The dual 1500RPM PWM fans are designed for quiet operation and typically remain unobtrusive under everyday loads, ramping up only under heavier sustained CPU use.