Peerless Assassin 140 Digital Black CPU Cooler - Dual Fans & Display

In this review the Thermalright Peerless Assassin 140 Digital Black is examined as a midtower air cooler that blends performance cooling with an ARGB digital top display. The bottom line: it is best for builders who want a striking visual element plus solid airflow from a dualtower design, while maintaining compatibility with mainstream ATX cases thanks to its 165mm height. The review focuses on cooling behavior, installation nuances and the magnetic ARGB display paired with TRCC software for live temperature readout.

Key Features

• Dual fan cooling: Two SFDB bearing fans provide sustained airflow and long service life for continuous CPU heat dissipation.
• High airflow: Fans deliver up to 82 and 77.8 CFM respectively, useful for keeping temperatures down under medium to heavy loads.
• ARGB magnetic display: The magnetic top cover houses a digital display that shows CPU and GPU temperature data and can change color through TRCC software.
• Mainstream case compatibility: At 165mm tall the cooler fits most ATX mid towers while still allowing room for memory and GPU installation.
• Software monitoring: TRCC Control Centre provides color adjustment and live telemetry for temperature and occupancy figures when connected via the motherboard USB header.
• Wide socket support: Includes mounting for Intel LGA1700/115x/2011/1200 and AMD AM4/AM5 platforms with supplied grommets for dualplatform installation.

Who It's For

The Peerless Assassin 140 Digital is aimed at PC builders who value both cooling capacity and aesthetics, particularly those who want a readable temperature display on the cooler itself and who will use TRCC software to customize colors. It suits users with midtower ATX cases and moderate to high TDP CPUs where an air tower cooler is preferred over an AIO.

Users who need absolute lowest noise or have extremely tight clearances under 165mm should look elsewhere, and AMD builders must be prepared to reuse their motherboard backplate because a backplate is not included with this cooler.

Pros & Cons

Pros

• Strong airflow numbers and dual fans with SFDB bearings deliver dependable heat evacuation during sustained loads.
• The magnetic ARGB digital display is a useful visual for realtime CPU/GPU temperature monitoring and customizable via TRCC.
• 165mm height fits most ATX cases while leaving room for taller memory modules and larger GPUs.

Cons

• Cooling performance feedback is mixed among users, and at least one report indicated unusually high temperatures that warrant careful installation and thermal paste application.
• AMD installations require the motherboard's original backplate, which is not supplied, adding a potential extra step for some builders.

Specifications

Model	Peerless Assassin 140 Digital Black
Overall size	140 x 160 x 165 mm
Fan sizes	120 x 120 x 28 mm and 140 x 140 x 27 mm
Fan speed	1850 / 1500 RPM 10%
Airflow / Pressure	82 / 77.8 CFM, 2.1 / 2.09 mm H2O
Operating noise	29.6 / 25.6 dB(A)
Compatibility	Intel LGA1851/1700/115x/2011/1200/2066, AMD AM4/AM5

Our Verdict

The Peerless Assassin 140 Digital Black is a compelling choice for builders who want a visually distinctive air cooler with a functional digital temperature display and robust airflow. It represents good value when you prioritize appearance and monitoring alongside competent cooling, but installers should follow mounting guidance closely and note the AMD backplate requirement.

Frequently Asked Questions

Does the cooler fit in most midtower cases?
Yes, the cooler is 165mm tall and is designed to fit mainstream ATX midtower cases, but measure clearance before purchasing.

Is the magnetic display plugandplay?
The ARGB display mounts magnetically, but temperature readout and color control require TRCC software and a motherboard 9PIN USB header for power and data.

Does the package include an AMD backplate?
No, AMD platform installation requires reuse of the motherboard's original backplate; the cooler does not include a separate backplate.