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

**URL:** https://aio.lv/en/product--thermalright-pa120-b--11242886
**Data updated:** 2026-01-14 13:11 (EET)
**Category:** CPU Coolers & PC Cooling Systems
**Manufacturer:** Thermalright
**Manufacturer code:** PA120-B
**EAN:** 814256003049
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 41.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 34.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--thermalright-pa120-b--11242886

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

The Thermalright Peerless Assassin 120 is an air cooler designed for efficient CPU cooling. It features a 12 cm fan with a maximum rotational speed of 1550 RPM and a fluid dynamic bearing for quiet operation. With a maximum air pressure of 1.53 mmH2O, it ensures optimal airflow. Its dimensions are 135 mm in width, 125 mm in depth, and 157 mm in height, all in a sleek black finish.

## Long description

The Thermalright Peerless Assassin 120 is an air cooler engineered for efficient CPU heat dissipation in desktop systems. It includes a 120 mm fan with a maximum rotational speed of 1550 RPM and a fluid dynamic bearing designed to reduce noise while maintaining steady airflow. The cooler is finished in black and has a compact footprint suitable for many mid-tower and smaller cases, providing a balance between cooling performance and space requirements.
Advantages
The Peerless Assassin 120 combines a low-noise 120 mm fan and an aerodynamic impeller to deliver focused airflow with a measured maximum static pressure of 1.53 mmH2O. Its compact dimensions allow installation in systems with limited clearance while still offering effective heat transfer from the CPU. The fluid dynamic bearing increases fan lifespan and reduces mechanical noise, and the overall design keeps weight low at approximately 0.75 kg.
Suitable for
Everyday desktop computers requiring reliable CPU cooling
Compact or mid-tower gaming builds with limited cooler clearance
Workstations running sustained CPU workloads at stock or mildly overclocked settings
System builders who prefer a black, low-profile cooler aesthetic
Key specifications
Type: Air cooler
Fan diameter: 120 mm
Maximum fan speed: 1550 RPM
Bearing type: Fluid dynamic bearing
Maximum air pressure: 1.53 mmH2O
Dimensions (W×D×H): 135 × 125 × 157 mm
Weight: 0.75 kg
Colour: Black
Supported processor sockets: AM4, AM5, LGA 1150/1151/1155/1200, LGA 1700, LGA 2011-v3, LGA 2066
How to use
Install the Thermalright Peerless Assassin 120 according to the motherboard and case clearance. Mount the cooler on the CPU using the supplied mounting hardware compatible with the listed sockets and ensure even contact with a thin, uniform layer of thermal paste. Connect the fan to the motherboard fan header or a fan controller and verify the fan spins correctly during system startup. Monitor CPU temperatures under load after installation and, if necessary, adjust fan curves in BIOS or fan-control software to achieve the desired balance between cooling and noise.
Usage recommendations
Ensure sufficient case airflow by using at least one intake and one exhaust fan to complement the Peerless Assassin 120. For systems with high ambient temperatures or sustained heavy CPU loads, verify that the cooler has adequate clearance from RAM modules and GPU to maintain optimal airflow paths.

## 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 | Black |
| 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

### How much does the Air cooler Thermalright Peerless Assassin 120 cost, and is it available for purchase?

The price is 41.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. 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/11242886/62134349_large.webp