# Heatsink Thermalright Peerless Assassin 140 — 120/140 mm fans, FDB, max 1500 RPM, 132×140×158 mm, black

**URL:** https://aio.lv/en/product--thermalright-peerless-assassin-140-black--11521959
**Data updated:** 2025-12-28 17:56 (EET)
**Category:** Computer Component Accessories
**Manufacturer:** Thermalright
**Manufacturer code:** PEERLESS ASSASSIN 140 BLACK
**EAN:** 0814256018197
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Thermalright Peerless Assassin 140 is a CPU heatsink/radiator designed for use with 120 mm or 140 mm fans. It features a fluid dynamic bearing (FDB) fan design with a maximum rotational speed of 1500 RPM and maximum air pressure of 1.53 mmH2O. Compact at 132 × 140 × 158 mm and finished in black, it provides effective heat dissipation for desktop processors and fits typical PC cases.

## Long description

Thermalright Peerless Assassin 140 is a CPU heatsink/radiator compatible with both 120 mm and 140 mm fans. The compact black cooler measures 132 × 140 × 158 mm and is designed to provide effective heat dissipation for desktop processors. It includes a C1100 pure copper nickel-plated heatsink and a fan with fluid dynamic bearing (FDB) that reaches up to 1500 RPM and delivers up to 66.17 CFM with a maximum static pressure of 1.53 mmH2O.
Advantages
The cooler combines a nickel-plated C1100 pure copper heatsink for efficient thermal conduction with a quiet S-FDB fan for stable long-term operation. Its support for a wide range of CPU sockets and compatibility with both 120 mm and 140 mm fan sizes make it versatile for different builds. Compact dimensions and black finish allow installation in common PC cases without dominating interior space.
Suitable for
Air cooling of desktop CPUs in mid-tower and compact cases
Systems requiring compatibility with LGA 1200 / 1700 / 1800 / 2011 / 2066 and AM4 / AM5 sockets
Builds where moderate fan speed (up to 1500 RPM) and low noise are desired
Key specifications
Product type: Processor heatsink/radiator for 120/140 mm fans
Dimensions: 132 × 140 × 158 mm
Fan size: 120 × 120 × 25 mm (supports 120/140 mm configuration)
Fan bearing: Fluid Dynamic Bearing (S-FDB)
Max fan speed: 1500 RPM
Airflow / noise / pressure: 66.17 CFM, 25.6 dB, 1.53 mmH2O
Heatsink material: C1100 pure copper, nickel plated
Connector: 4-pin PWM
Color: Black
How to use
Install the heatsink according to the motherboard and socket-specific mounting hardware included with the product. Mount a compatible 120 mm or 140 mm fan (the unit is supplied with an FDB fan) and connect the 4-pin PWM connector to the CPU fan header on the motherboard to allow speed control. Apply an appropriate amount of thermal paste between the CPU heatspreader and the heatsink base before fastening the cooler to ensure optimal thermal contact.
Usage recommendations
Use the 4-pin PWM header to enable automatic fan control; set BIOS or fan-control software curves to balance temperature and noise. Ensure sufficient case airflow and confirm clearance for RAM and other components before final installation.

## Specifications

| Feature | Value |
|---|---|
| Type | Heatsink/Radiator |
| Height | 158 mm |
| Width | 132 mm |
| Depth | 140 mm |
| Product colour | Black |
| 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) |
| Suitable location | Processor |
| Base plate material | Copper |
| Maximum airflow | 66.17 cfm |
| Maximum air pressure | 1.53 mmH2O |
| Noise level (high speed) | 25.6 dB |
| Fan connector | 4-pin |
| Heat pipes diameter | 6 mm |
| Fan dimensions (W x D x H) | 120 x 120 x 25 |
| Rotational speed (max) | 1500 RPM |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Fan noise level (max) | 25.6 dB |
| Number of fan blades | 9 |
| 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 |
| 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

### Where can I download the instructions for Thermalright Peerless Assassin 140 0814256018197?

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

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