This article covers Thermalright AssassinX 120R SE White ARGB CPUエアクーラー.

Overview

The Thermalright AssassinX 120R SE White ARGB is an entry-level air CPU cooler from the well-known Taiwanese brand Thermalright. Its white-painted aluminum heatsink and ARGB fan make it a natural fit for white-themed PC builds, while the compact 148mm height ensures broad case compatibility. At the core of the cooler are four 6mm heat pipes using AGHP III (Anti-Gravity Heat Pipe) technology, paired with a dense aluminum fin stack. The included 120mm PWM fan (model TL-C12CW-S) spins up to 1550 RPM, delivering 66.17 CFM of airflow at a noise level of just 25.6 dBA. It supports Intel LGA 1700/1200/115x and AMD AM4/AM5 sockets, covering virtually all modern desktop platforms.

Connectivity & Compatibility

Supported sockets: Intel LGA 1700 / 1200 / 1150 / 1151 / 1155 / 1156, AMD AM4 / AM5 Fan connector: 4-pin PWM (12V), ARGB connector (3-pin 5V) Heatsink dimensions: 125 (W) x 71 (D) x 148 (H) mm Fan dimensions: 120 x 120 x 25 mm (standard 120mm) * Case clearance: 148mm height fits most mid-tower cases. Check CPU cooler clearance before purchase, especially in slim or Mini-ITX cases.

Product Info

Released around 2022, the AssassinX 120R SE White ARGB sits firmly in the entry-level to lower-mid-range segment. At around ¥2,809 (approx. $20 USD) on Japan as of June 2026, it's one of the most affordable ARGB coolers on the market. Warranty is not explicitly stated by Thermalright but typically ranges from 1 to 2 years for this product line. The package includes mounting kits for both Intel and AMD platforms, a backplate, a tube of thermal compound, and an instruction manual.

Best Use Cases

White-themed PC builders: The white heatsink and ARGB fan create a cohesive look in white cases. Note that the ARGB requires a 3-pin 5V ARGB header on the motherboard or a separate controller. Budget gaming PC users: For CPUs like the Core i5-12400F or Ryzen 5 5600X, this cooler provides adequate thermal performance at stock settings. The low price lets you allocate more budget to the GPU or memory. Noise-sensitive users: At a maximum of 25.6 dBA, the fan is nearly silent during idle and remains quiet under moderate load. PWM control adjusts speed automatically based on CPU temperature. Not recommended for: High-end CPUs like Core i7-13700K or Ryzen 9 7950X under sustained heavy workloads. Overclocking enthusiasts should look at dual-tower air coolers or liquid cooling solutions.

Things to Consider

Memory clearance: The fan overhangs the RAM slots in its default position. Tall RAM modules (e.g., Corsair Vengeance RGB Pro) may require shifting the fan upward or toward the rear of the case. Case width: At 148mm tall, the cooler fits most mid-tower cases, but slim or Mini-ITX cases may not have enough clearance. Always verify your case's maximum CPU cooler height. ARGB control: The fan's ARGB lighting requires a 3-pin 5V ARGB header on the motherboard. If your board lacks one, you'll need a separate ARGB controller. Alternatives: In the same price bracket, the Arctic Freezer 34 eSports and Cooler Master Hyper 212 series offer similar cooling performance. The AssassinX 120R SE stands out with its white color and slightly quieter fan, but the performance difference is marginal.

Product Disclosure (Amazon)

  • Manufacturer: Lian Li
  • ASIN: B0DV53MWZ7
  • Note: This article covers a manufacturer-made product based on Amazon listing details.