This article covers Thermalright Peerless Assassin 120 SE ARGB ホワイト CPUエアクーラー 6ヒートパイプCPUクーラー デュアル120mm TL-C12CW-S 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 SE ARGB White is a dual-tower CPU air cooler that combines six 6mm heat pipes with two 120mm PWM fans. Its all-white aesthetic and addressable RGB lighting make it a popular choice for themed gaming builds. Supporting Intel LGA115X/1200/1700/17XX and AMD AM4/AM5 sockets, it is compatible with a wide range of modern and previous-generation CPUs. With a maximum airflow of 66.17 CFM and a noise level capped at 25.6 dBA, it delivers strong cooling performance while remaining quiet even under load. This cooler has been a mainstay in the budget-to-mid-range segment for years, praised for its excellent price-to-performance ratio. As of mid-2026, it remains readily available on Japan at around ¥7,916, making it one of the most cost-effective dual-tower coolers on the market.
Connectivity & Compatibility
The cooler supports Intel LGA115X (1150/1151/1155/1156), LGA1200, LGA1700, and the newer LGA17XX series (including LGA1851). AMD support includes both AM4 and AM5 sockets. The mounting kit includes metal brackets and backplates for each platform, ensuring a secure installation. Height clearance: 155mm — fits most mid-tower cases. However, due to the dual-tower design, the first RAM slot may be partially obstructed; low-profile memory is recommended for full compatibility. The cooler requires access to the motherboard's backplate area, so it is best to install it before placing the motherboard in the case.
Product Info
Released several years ago, the Thermalright Peerless Assassin 120 SE ARGB White is still actively sold through Japan and other retailers. The warranty period is typically 2 years (check with seller). Included accessories: two TL-C12CW-S PWM ARGB fans, Intel and AMD mounting kits, a tube of thermal paste, and ARGB controller (may vary by revision). Market position: solid mid-range. The dual-tower, six-heat-pipe design is shared with higher-end models, but the use of standard 120mm fans helps keep costs down. It occupies a sweet spot between entry-level single-tower coolers and premium dual-tower solutions.
Best Use Cases
Ideal for builders who want reliable cooling for mid-to-high-end CPUs such as the Intel Core i5-14600K or AMD Ryzen 7 7800X3D without breaking the bank. The white color scheme and ARGB fans make it a natural fit for all-white or minimalist PC builds. Also recommended for first-time custom PC builders: the mounting process is straightforward, and the included manual is clear. For those upgrading from a stock cooler, the performance increase is immediately noticeable in both lower temperatures and reduced noise. Enthusiasts seeking a quiet system will appreciate the low-noise fans. At idle, the cooler is almost silent; under gaming loads, fan speed ramps up gradually while staying within a comfortable noise envelope.
