This article covers Thermalright Peerless Assassin 120 CPU エアクーラー ヒートパイプ 6本 デュアル 120mm TL-C12W PWMファン アルミニウムヒートシンクカバー AGHPテクノロジー AMD AM4.

Overview

The Thermalright Peerless Assassin 120 White is a high-performance dual-tower CPU air cooler featuring six 6mm copper heat pipes and two 120mm PWM fans. Its white-coated twin-tower design delivers excellent cooling efficiency and quiet operation, making it a popular choice for mid-range to high-end builds. With an effective heat dissipation area of approximately 9600cm², it handles modern processors with ease. This cooler supports Intel LGA 1851/1700/1200/115X/2066/2011 and AMD AM4/AM5 sockets, ensuring broad compatibility with current and recent platforms. The offset asymmetric layout helps avoid interference with the first PCIe slot and tall memory modules.

Connectivity & Compatibility

Supported sockets include Intel LGA 1851/1700/1200/1150/1151/1155/1156/2066/2011 and AMD AM4/AM5. The included mounting kit covers all these platforms with dedicated brackets and backplate. The cooler height is approximately 157mm, so ensure your case has at least 160mm of CPU cooler clearance. Most mid-tower cases will accommodate it without issue. Memory clearance is improved by the offset design. Standard-height RAM modules fit easily, but modules taller than 50mm may require adjusting the front fan position upward slightly.

Product Info

The Thermalright Peerless Assassin 120 White launched around 2022 and sits in the mid-high tier of air coolers. It is widely recognized for offering exceptional value, delivering cooling performance comparable to more expensive models at a significantly lower price point. Included in the box are the heatsink, two TL-C12W PWM fans, mounting hardware for Intel and AMD, thermal compound, and an installation manual. Warranty coverage typically ranges from 2 to 3 years depending on the region.

Best Use Cases

Budget-conscious PC builders: This cooler provides near-flagship cooling performance at an entry-level price, making it ideal for users who want maximum value without sacrificing thermal performance. Silent PC enthusiasts: The dual PWM fans operate at up to 1500 RPM with a maximum noise level of 25.6 dBA. At lower loads, they run even quieter, suiting noise-sensitive environments. White-themed builds: The white heatsink and fan frames blend perfectly with white cases and components, creating a clean, cohesive aesthetic.

Things to Consider

Case clearance: At ~157mm tall, verify your case supports at least 160mm CPU cooler height. Smaller cases may not fit. RAM interference: While offset helps, very tall RAM heatsinks (over 50mm) may require moving the front fan upward, which slightly reduces cooling performance. CPU TDP limits: This cooler handles up to ~200W TDP effectively. For heavily overclocked Core i9 or Ryzen 9 processors under sustained full load, a 360mm AIO or premium air cooler may be more appropriate. * Installation complexity: Dual-tower coolers are trickier to install than single-tower models. It is strongly recommended to mount the cooler before installing the motherboard into the case.