This article covers Cooler Master 240 Core II AIO CPU液体クーラー.

Overview

The Cooler Master 240 Core II is a 240mm All-In-One liquid cooler designed for mid-to-high-end CPUs. It features the proprietary G9R dual-chamber pump that increases water pressure and directly optimizes flow to CPU hotspots, making it suitable for Intel Core i7 and AMD Ryzen 7 class processors. The included dual MF120 Lite PWM fans deliver solid airflow while the Infinity Mirror ARGB effect adds a premium aesthetic. With a compact 240mm radiator and 400mm tubing, this cooler fits into most mid-tower cases while providing sufficient thermal headroom for daily use and mild overclocking. The redesigned mounting brackets simplify installation on modern LGA 1851/1700 and AM5/AM4 platforms.

Connectivity & Compatibility

CPU socket support: Intel LGA 1851 / 1700 / 1200 / 115X, AMD AM5 / AM4. Power connectors: Pump uses a 3-pin header; fans use 4-pin PWM headers. ARGB control: Requires a 3-pin 5V ARGB header on the motherboard. An optional controller may be needed for older boards. Radiator dimensions: approx. 277 x 119 x 28 mm. Check case compatibility before purchase. * Tube length: 400 mm, flexible enough for top or front mounting in most mid-tower enclosures.

Product Info

The Cooler Master 240 Core II launched in late 2024 as a successor to the Core I series, targeting mainstream builders who want reliable liquid cooling without the bulk of a 360mm radiator. Its market position is firmly mid-range, offering competitive thermal performance and striking aesthetics at around $100 (JPY 16,117 as of July 2026). Warranty is 2 years from the manufacturer. The package includes AMD/Intel retention brackets, mounting screws, pre-applied thermal paste, and a user manual. It is widely available on Japan and other major online retailers.

Best Use Cases

Ryzen 7 / Core i7 users at stock or mild OC: Ideal for CPUs with TDP around 150W where a 360mm cooler is overkill. The 240mm form factor fits most cases while providing ample cooling for daily workloads and light gaming. Enthusiasts who value RGB aesthetics: The Infinity Mirror ARGB fans create a distinctive light show that syncs with motherboard software. Perfect for builders who want their cooler to be a visual centerpiece. First-time liquid cooler buyers: Pre-applied thermal paste and simplified brackets reduce installation complexity. However, always verify case radiator support before purchase. Not recommended for: Extreme overclocking or silent builds — consider a 360mm liquid cooler or premium air cooler for those scenarios.

Product Disclosure (Amazon)

  • Manufacturer: インテル(Intel)
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0DJQ82CNP
  • Note: This article covers a manufacturer-made product based on Amazon listing details.