Thermalright Peerless Assassin 140 Digital Black CPU Cooler Air with 6 Heatpipes, Magnetic Display Board Top Cover,Heatsink CPU…
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Best Thermalright budget air
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$42.87
Updated Jun 27, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Reviewers across the board treat the Thermalright Peerless Assassin line as the value benchmark. tomshardware.com (verified) summarizes the Peerless Assassin 140 as offering 'strong performance and moderate noise levels for less than $40,' and hwbusters.com (high-trust) adds the important nuance that it 'performs best in AMD systems, where the power consumption doesn't go through the roof.' That AMD-leaning caveat is the key technical finding: it's a dual-tower, six-heatpipe cooler that excels on efficient chips and is merely competitive on the hottest Intel parts. High-trust r/buildapc threads are full of practical guidance rather than complaints, noting the 120mm front fan mounting and a 170mm-or-taller clearance requirement, and pointing to Gamers Nexus findings on VRM cooling for the Mini variant.
What reviewers liked
- tomshardware.com (verified) confirms strong performance and moderate noise for under $40
- hwbusters.com (high-trust) validates excellent results on efficient AMD chips
- Dual-tower, six-heatpipe design at a budget price point
- High-trust community widely cites the Peerless Assassin line as the value leader
Where it falls short
- hwbusters.com notes it's less ideal for the highest-power Intel CPUs
- Only 38 Amazon reviews on this Digital variant, a thin sample
- Requires 170mm+ case clearance per r/buildapc
- Digital display is cosmetic and adds no cooling benefit
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Reviewers across the board treat the Thermalright Peerless Assassin line as the value benchmark. tomshardware.com (verified) summarizes the Peerless Assassin 140 as offering 'strong performance and moderate noise levels for less than $40,' and hwbusters.com (high-trust) adds the important nuance that it 'performs best in AMD systems, where the power consumption doesn't go through the roof.' That AMD-leaning caveat is the key technical finding: it's a dual-tower, six-heatpipe cooler that excels on efficient chips and is merely competitive on the hottest Intel parts.
High-trust r/buildapc threads are full of practical guidance rather than complaints, noting the 120mm front fan mounting and a 170mm-or-taller clearance requirement, and pointing to Gamers Nexus findings on VRM cooling for the Mini variant. The broader r/hardware consensus is that any of the various Peerless Assassin and Phantom Spirit configurations land near the top of the budget-air bracket.
The main hesitation in the data is signal volume: this specific Digital model carries only 38 Amazon reviews, so its 4.9 average is informative but thin. The digital display is a cosmetic extra rather than a performance feature. For the money, the trust-weighted consensus is that this is the cooler to beat under $50.
- Radiator Specifications
- Model: Peerless Assassin 140 Digital Black,overall size: 140x160x165mm, fan size: 120x120x28mm/140x140x27mm,fan speed: 1850/1500RPM+10%,wind pressure: 2.1/2.09mm H2O Airflow: 82/77.8CFM,Operating Noise:≤29.6/25.6DB(A),Fan Power Supply Interface: 4PIN PWM,the dual cpu fans with the radiator come with S-FDB bearings, which have long-life characteristics to ensure that the radiator dissipates heat efficiently
- ARGB Magnetic Digital Display Board
- The radiator is paired with a magnetic top cover ARGB digital display board, which can grasp the temperature and occupancy information of the CPU and graphics card, and combined with the TRCC control software, it can achieve the colour switching of the temperature figures
- AGHP Heat Pipe Technology
- The 6X6mm heat pipe adopts version 5.0 of AGHP technology, which solves the effect of reverse gravity due to the two orientations of standing/lying. Pure copper heat pipes combined with precision reflow soldering micro-engraved copper base optimise the thermal performance of the dual platform for the new generation of dual platform heat generation, avoiding the memory design and recommending memory installation at a height of 44mm or less
- Dual Towers Dual Fans Cooling
- The cooler is paired with high speed dual fans, a combination of 12cm and 14cm fans, which can easily dissipate CPU temperatures, and the fans feature PWM intelligent temperature control, eliminating the need to manually adjust the fixed speed. Soft corner pads around the fans reduce vibration noise during fan operation
- TRCC Software
- TRCC Control Centre can freely monitor the parameters of CPU and GPU temperature and occupancy, and the data text can be freely adjusted in colour. The power supply and data communication transmission of the digital display board are provided by the 9PIN USB interface of the motherboard, please ensure the integrity of the wiring before installing the software, which can be downloaded and installed from the official website
- Detailed Optimisation
- The radiator is paired with SS2 fasteners, multiple specifications depending on the adaptation, compatible with a wide range of CPU models, easy to install and remove, convenient for users to carry out maintenance and upgrades, and easy to install. The included Y-adapter can connect two fans in series with only one motherboard interface
- Wide Compatibility
- The cpu cooler is compatible with platforms: AMD: AM4/AM5 and LGA1851/1700/1150/1151/1155/1156/1200/2011/2066,comes with dual-platform mounting grommets, which can be well mounted to the corresponding platforms, and can be installed according to the manuals or installation videos. (Note: AMD platform installation requires the use of the motherboard's original backplane, this product does not come with the backplane)
The "Peerless Assassin" comes in various single tower, 4 heat pipe variations, and various dual tower, 6 heat pipe variations. Any of those ...
It's no more silent than a huge air cooler and the pump is definitely there at times as if I had an aquarium somewhere in the house. It's like ...
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“Bigger, Better” · Peerless Assassin 140 (PA140) Review
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