Thermalright Peerless Assassin 140: A dual-tower CPU air cooler. It uses six 6mm copper heat pipes and two S-FDB bearing fans for quiet operation. Works with Intel LGA1700/1851 and AMD AM4/AM5 platforms. Height is 158 mm for wide case compatibility.

About Thermalright Peerless Assassin 140
The Thermalright Peerless Assassin 140 uses a smart dual tower design with six 6mm heat pipes. These copper pipes pull heat away from your processor very fast. A C1100 nickel-plated copper base sits right on the CPU for great heat transfer. This setup keeps your chip cool even when you work hard or play games. You can trust this cooler to handle intense jobs.
The cooler has two fans for strong airflow. You get a 120mm fan and a 140mm fan working together. Both fans run up to 1500 RPM with little noise at just 25.6 dBA. The front fan moves up to 66.17 CFM of air. The center fan pushes even more at 77.8 CFM. S-FDB bearings inside each fan help them last a very long time without getting loud.
This cooler fits most newer computer builds with ease. It works on Intel LGA 1700 and LGA 1851 motherboards. It also covers AMD AM4 and AM5 systems fully. The 158 mm total height makes it work with many medium and large cases on the market. You do not need to worry about it blocking your RAM sticks either. The Thermalright Peerless Assassin 140 gives you top performance without any fuss.
Specifications Peerless Assassin 140
| Category | Value |
|---|---|
| Product Category | Computer Cooling |
| Product Subcategory | CPU Air Cooler |
| Heatsink Design | Dual Tower |
| Heat Pipe Material | Copper |
| Number of Heat Pipes | 6 |
| Heat Pipe Diameter | 6 mm |
| Base Material | C1100 Pure Copper Nickel Plated |
| Heatsink Width | 132 mm |
| Heatsink Depth | 140 mm |
| Heatsink Height | 158 mm |
| Number of Fans | 2 |
| Fan 1 Size | 120 x 120 x 25 mm |
| Fan 2 Size | 140 x 140 x 27 mm |
| Fan Bearing Type | S-FDB (Fluid Dynamic Bearing) |
| Maximum Fan Speed | 1500 RPM ± 10% |
| Maximum Airflow (Front Fan) | 66.17 CFM |
| Maximum Airflow (Center Fan) | 77.8 CFM |
| Maximum Air Pressure (Front) | 1.53 mm H₂O |
| Maximum Air Pressure (Center) | 2.09 mm H₂O |
| Maximum Noise Level | 25.6 dBA |
| Fan Connector | 4-Pin PWM |
| Intel Socket Support | LGA 115x, 1200, 1700, 1851, 2011, 2066 |
| AMD Socket Support | AM4, AM5 |
| Warranty | 2 Years |
| Shipping | 7-14 Days |
| Price | $40 USD |
Reviews Thermalright Peerless Assassin 140
I built a new gaming PC last week and picked up this air cooler. The installation was easy, and the fans are super quiet even when gaming. My CPU temps dropped by almost 15 degrees compared to my old stock cooler. Really happy with this purchase.
Lots of cooling power for the price. The dual fans keep my system chill under heavy loads. I just wish the 120mm fan was a bit lower profile near my RAM slots. Still a solid performer for daily use and video editing.
Really impressed with how well this keeps my processor cool without making a lot of noise. The copper base and six heat pipes do a great job. Fits perfectly in my mid-tower case and installation took less than 15 minutes.