This article covers Thermalright Assassin X 120R SE Plus CPUクーラー.

Overview

The Thermalright Assassin X 120R SE Plus is a compact side-flow CPU cooler from the well-known Taiwanese brand. Standing at just 148mm tall, it fits comfortably in most mid-tower cases. Four 6mm copper heatpipes make direct contact with the CPU, transferring heat efficiently to an all-aluminum fin stack. Two 120mm PWM fans are included: a primary TL-C12C running at up to 1550 RPM and a secondary TL-C12RB V2 at 1500 RPM. This slight speed difference helps reduce resonance noise while delivering up to 66.17 CFM of airflow. The S-FDB bearing design further extends fan lifespan and keeps noise low during idle.

Connectivity & Compatibility

Socket support covers Intel LGA1700, 1200, and 115x series, plus AMD AM4 and AM5. The included backplate and mounting brackets work with both platforms out of the box. No extra tools are needed. Both fans use standard 4-pin PWM headers, so motherboard temperature control works seamlessly. The package includes thermal paste, fan clips, and all necessary hardware.

Product Info

The Assassin X 120R SE Plus sits in the entry-to-mid-range CPU cooler segment, priced around ¥5,000. It is best suited for CPUs with a TDP of 65W to 120W, such as the Ryzen 5 or Core i5 series. Released in late 2023, it carries a standard one-year warranty. Availability is steady through and other major online retailers.

Best Use Cases

Quiet PC builders: The S-FDB bearing fans are rated at just 15 dBA at low speed, making this an excellent choice for noise-sensitive setups. Budget-conscious builders: Four heatpipes and dual fans at this price point offer great value for mainstream CPUs. Compact case users: At 148mm tall, the cooler fits many mid-tower and some Mini-ITX cases, but check case clearance before buying. Not for heavy overclocking: If you run a Ryzen 9 or Core i9, consider a larger air cooler or a 240mm+ liquid cooler instead.

Things to Consider

RAM clearance: The side-flow design may interfere with tall memory modules (over 40mm height). Standard-height RAM is fine. Case width: The cooler is 96mm deep including fans. Verify your case supports at least 148mm CPU cooler height. * High-TDP CPUs: Not recommended for CPUs exceeding 150W TDP. For Ryzen 9 or Core i9, upgrade to a larger cooler.

Product Disclosure (Amazon)

  • Manufacturer: ASRock
  • ASIN: B09NZPD6WD
  • Note: This article covers a manufacturer-made product based on Amazon listing details.