# Heatsink/Radiator Thermalright Peerless Assassin 140 120/140 mm White

**URL:** https://aio.lv/en/product--thermalright-pa140-w--11242887
**Data updated:** 2026-02-23 15:15 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Thermalright
**Manufacturer code:** PA140-W
**EAN:** 814256018203
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Thermalright Peerless Assassin 140 is a high-performance heatsink designed for efficient cooling. It features a 120/140 mm fan with a maximum rotational speed of 1500 RPM, ensuring optimal airflow and cooling efficiency. The fluid dynamic bearing enhances durability and reduces noise, making it suitable for various PC builds. The sleek white design adds a modern touch to your setup.

## Long description

The Thermalright Peerless Assassin 140 is a dual-format heatsink designed for compatibility with both 120 mm and 140 mm fan configurations. Engineered for efficient heat dissipation, the cooler pairs a fin-stack radiator with an included fan that operates up to 1500 RPM and uses a fluid dynamic bearing for extended service life and reduced operational noise. The white finish provides a neutral aesthetic that integrates with a wide range of PC builds while the tower-style layout optimizes airflow through the fins for sustained thermal performance.
Advantages
The Peerless Assassin 140 combines a dense aluminium fin array and a high static-pressure fan to deliver effective cooling for mainstream and high-performance processors. Fluid dynamic bearing technology reduces bearing wear and minimizes noise compared with sleeve-bearing designs. The dual-format mounting allows use of either 120 mm or 140 mm fans depending on case clearance and airflow preferences. The compact tower footprint supports memory compatibility on most motherboards while maintaining sufficient fin surface area for heat transfer.
Suitable for
Air cooling of consumer and gaming desktop CPUs
Systems where low-noise operation is desired
Builds requiring a white or neutral cooler aesthetic
Setups with limited space that still need efficient thermal management
Key specifications
Fan size compatibility: 120 mm or 140 mm
Maximum fan speed: 1500 RPM
Bearing type: fluid dynamic bearing
Material: aluminium fins with a nickel-plated or painted surface finish
Cooling layout: tower heatsink with direct airflow path through fin stack
Color: white
How to use
Install the heatsink according to the motherboard and CPU socket compatibility instructions supplied with the product. Apply a thin, even layer of thermal compound to the CPU heatspreader before mounting the base of the heatsink. Secure the cooler using the provided mounting brackets and fasteners, ensuring even pressure across the CPU. Choose between a 120 mm or 140 mm fan installation based on available clearance and desired airflow; connect the fan to a 4-pin PWM header for automatic speed control or to a suitable fan controller. Verify clearance for RAM modules and adjacent components before final tightening.
Usage recommendations
To maintain consistent cooling performance, check that the fan is free of dust buildup and that airflow paths inside the case are unobstructed. Use PWM control for balanced noise and cooling, and reapply thermal compound if the cooler is removed and reinstalled to preserve thermal conductivity.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Type | Heatsink/Radiatior |
| Fan diameter | 120 mm |
| Supported processor sockets | Socket AM5, Socket AM4, LGA 2066, LGA 2011 (Socket R), LGA 1800, LGA 1700, LGA 1200 (Socket H5) |
| Noise level (high speed) | 25.6 dB |
| Rotational speed (max) | 1500 RPM |
| Maximum airflow | 66.17 cfm |
| Maximum air pressure | 1.53 mmH2O |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Suitable location | Processor |
| Fan noise level (max) | 25.6 dB |
| Fan 2 rotational speed (max) | 1500 RPM |
| Fan 2 noise level (high speed) | 25.6 dB |
| Fan 2 maximum airflow | 77.8 cfm |
| Fan 2 maximum air pressure | 2.09 mmH2O |

### Design

| Feature | Value |
|---|---|
| Product colour | White |
| Base plate material | Copper |
| Fan connector | 4-pin |
| Number of fan blades | 9 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Heat pipes diameter | 6 mm |
| Fan dimensions (W x D x H) | 120 x 120 x 25 |
| Fan 2 dimensions (W x D x H) | 140 x 140 x 27 |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Thermalright products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Thermalright service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, fan diameter, supported processor sockets, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Heatsink Thermalright Peerless Assassin 140?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11242887/64972779_large.webp