# Air cooler Thermalright Peerless Assassin 120 12 cm 1550 RPM White

**URL:** https://aio.lv/en/product--thermalright-peerless-assassin-120-white--11120111
**Data updated:** 2026-01-14 13:09 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Thermalright
**Manufacturer code:** Peerless Assassin 120 White
**EAN:** 814256013123
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Thermalright Peerless Assassin 120 is a high-performance air cooler featuring a 12 cm fan with a maximum speed of 1550 RPM. It operates at a noise level of 25.6 dB and delivers a maximum airflow of 66.17 CFM. With a fluid dynamic bearing for durability, its dimensions are 135 mm wide, 125 mm deep, and 157 mm high, all in a sleek white finish.

## Long description

The Thermalright Peerless Assassin 120 12 cm 1550 RPM White is a compact air cooler designed for efficient CPU heat dissipation in desktop systems. It features a 120 mm fan with a maximum rotational speed of 1550 RPM and a fluid dynamic bearing for extended operational life. The cooler provides up to 66.17 CFM airflow while maintaining a measured noise level of 25.6 dB, and its white finish and modest dimensions (135 × 125 × 157 mm) allow it to fit in a variety of mid-tower and small-form-factor enclosures.
Advantages
The Peerless Assassin 120 combines a balanced fan speed with a low noise profile to deliver consistent cooling without excessive acoustic impact. The fluid dynamic bearing improves long-term reliability and reduces maintenance needs. Its compact footprint and 120 mm fan size make installation straightforward in many standard PC cases, while the white styling offers a neutral aesthetic that integrates with a range of builds.
Suitable for
 Home and office desktops that require reliable CPU cooling
 Mid-tower and compact builds with limited clearance
 Systems that prioritize a quiet cooling solution
 Users replacing stock coolers for improved thermal performance
Key specifications
 Cooling type: Air cooler
 Fan diameter: 120 mm
 Maximum fan speed: 1550 RPM
 Maximum airflow: 66.17 CFM
 Noise level: 25.6 dB
 Bearing type: Fluid dynamic bearing
 Dimensions (W × D × H): 135 × 125 × 157 mm
 Weight: 0.75 kg
 Product colour: White
 Supported sockets: AM4, AM5, LGA 1150, LGA 1151, LGA 1155, LGA 1200, LGA 1700, LGA 2011-v3, LGA 2066
How to use
Prepare the motherboard and CPU area by removing the existing cooler and cleaning thermal paste residues. Apply a thin, even layer of thermal paste to the CPU heatspreader. Position the Peerless Assassin 120 on the mounting bracket corresponding to your CPU socket and secure it according to the included mounting instructions, ensuring even pressure across the cooler base. Connect the fan cable to the CPU fan header on the motherboard and verify that the fan spins and adjusts speed through the BIOS or fan control software. Monitor CPU temperatures during initial operation to confirm proper contact and thermal performance.
Usage recommendations
For optimal performance, ensure adequate case airflow by maintaining unobstructed intake and exhaust paths and periodically cleaning dust from the fan and heatsink fins. Use motherboard fan curves or dedicated fan controllers to balance noise and cooling based on workload. Check clearance around tall memory modules and VRM heatsinks before installation to avoid interference.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Type | Air cooler |
| Fan diameter | 120 mm |
| Supported processor sockets | Socket AM4, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 2011-v3 (Socket R), LGA 2066, Socket AM5 |
| Noise level (high speed) | 25.6 dB |
| Rotational speed (max) | 1550 RPM |
| Maximum airflow | 66.17 cfm |
| Maximum air pressure | 1.53 mmH2O |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Suitable location | Processor |
| Quantity per pack | 1 pc(s) |
| Fan bearing technology | Fluid Dynamic Bearing (FDB) |

### Design

| Feature | Value |
|---|---|
| Product colour | White |
| Number of fans | 2 fan(s) |
| Number of heat pipes | 6 |
| Base plate material | Copper |
| Fan connector | 4-pin |
| Illumination LED | No |

### Weight & dimensions

| Feature | Value |
|---|---|
| Heat pipes diameter | 6 mm |
| Weight | 0.75 kg |
| Height | 157 mm |
| Width | 135 mm |
| Depth | 125 mm |
| Fan weight | 135 g |
| Fan dimensions (W x D x H) | 120 x 120 x 25 |

### Power

| Feature | Value |
|---|---|
| Fan current | 0.2 A |

### Packaging content

| Feature | Value |
|---|---|
| Package type | Box |
| Screws included | Yes |

## 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, weight, 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 Air cooler Thermalright Peerless Assassin 120?

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/11120111/61829354_large.webp