Thermalright Peerless Assassin 120 Mini: A dual tower CPU cooler with six 6mm heat pipes and a single 120mm PWM fan. The 135mm height fits compact cases and Mini-ITX builds easily. It supports Intel LGA1700/1200/115X and AMD AM5/AM4 for broad processor compatibility.
About Thermalright Peerless Assassin 120 Mini
Performance and Cooling Design
You get powerful cooling from the dual tower design. It features a nickel plated pure copper base with six copper heat pipes that are 6 mm thick. This setup pulls heat from your CPU very fast. A single 120 mm fan sits between the two aluminum fin stacks. It pushes air through the whole cooler to keep your processor temperatures low even during heavy gaming.
Technical Fan Specifications
The included Thermalright fan uses a fluid dynamic bearing for quiet and reliable operation. It can spin up to 1500 RPM, moving up to 66.87 CFM of air through your case. The fan also produces a maximum static pressure of 1.53 mm H₂O. All of this happens with a noise level that stays at only 25.6 dBA. The fan connects to your motherboard with a standard 4 pin PWM connector for easy speed control.
Compact Size and Compatibility
This CPU cooler stands only 135 mm tall without the fan, making it a great fit for small computer cases. The full dimensions with the fan are 125 mm wide, 110 mm deep, and 145 mm high. It weighs 820 grams. You can install it on many modern processors, including Intel LGA1700, LGA1200, LGA115X, LGA1851, LGA2011, and LGA2066. It also works with AMD AM5 and AM4 sockets. The cooler comes in both black and white versions so you can pick the look you want. Installation is simple, and it fits nicely even on Mini-ITX motherboards.
Specifications Peerless Assassin 120 Mini
| Parameter | Value |
|---|---|
| Product Category | PC Components |
| Product Subcategory | CPU Coolers |
| Brand | Thermalright |
| Model | Peerless Assassin 120 Mini |
| Color | Black / White |
| Dimensions (W x D x H) with fan | 125 x 110 x 145 mm |
| Heatsink dimensions (W x D x H) | 125 x 110 x 135 mm |
| Weight | 820 g |
| Heatsink fin material | Aluminum |
| Base material | Nickel plated C1100 copper |
| Number of heat pipes | 6 |
| Heat pipe diameter | 6 mm |
| Fan model | TL-D12B / TL-D12W |
| Fan bearing type | S-FDB (Fluid Dynamic Bearing) |
| Maximum fan speed | 1500 RPM (+- 10%) |
| Maximum airflow | 66.87 CFM |
| Maximum static pressure | 1.53 mm H₂O |
| Maximum noise level | 25.6 dBA |
| Fan connector type | 4 pin PWM |
| Intel socket compatibility | LGA1700, 1200, 115X, 1851, 2011, 2066 |
| AMD socket compatibility | AM5, AM4 |
| Warranty | 2 years |
| Shipping time | 7-14 days |
| Price | $40 USD |
Reviews Thermalright Peerless Assassin 120 Mini
I’m really impressed with this CPU cooler. The dual tower design keeps my Ryzen 7 cool even when I’m gaming for hours. The best part is how quiet the fan stays. I can barely hear it over my case fans. Installation was a breeze on my AM5 board.
Fits perfectly in my compact PC build with barely any room to spare. Temperatures dropped by 15 degrees compared to my old stock cooler. The only small issue was the mounting clips felt a bit tight to install. Still a great purchase for the performance you get.
Six heat pipes do an amazing job at heat transfer. I love the all black look, it matches my setup perfectly. The 135mm height was the main reason I bought it for my small case. It keeps my CPU at 65 degrees under full load. Way better than I expected for this price.
