ASUS Republic of Gamers RYUJIN III 240 ARGB AIO Liquid CPU Cooler

Overview

The ASUS ROG RYUJIN III 240 ARGB is a liquid CPU cooler designed for PC enthusiasts seeking reliable thermal management combined with quiet operation and customizable aesthetics. It features a 240 mm aluminum radiator paired with an eighth-generation Asetek pump that efficiently circulates coolant to maintain optimal temperatures for modern multi-core processors. The cooler also includes a 3.5-inch full-color LCD that displays real-time system information or custom animations, adding both functionality and style to your build.

Key features

• 3.5-inch color LCD with 32 MB of onboard memory to show system stats or personalized graphics, keeping vital information visible during gaming or heavy workloads
• Eighth-generation Asetek pump with a three-phase motor operating between 800 and 3600 rpm for consistent and efficient coolant flow
• Two 120 mm PWM fans with magnetic, daisy-chain connections that simplify installation and support addressable RGB lighting for synchronized effects
• Copper cold plate with 32 percent more surface area than previous models to improve heat transfer from the CPU
• Embedded VRM fan spinning up to 5100 rpm to provide additional cooling for motherboard power delivery components, enhancing stability during overclocking
• 400 mm long sleeved rubber tubing with a 7 mm inner diameter, offering flexible installation options in most mid-tower and full-tower cases
• Comprehensive mounting hardware compatible with Intel LGA 1700, 1200, 115x, and AMD AM5, AM4 sockets for easy integration into new or upgraded systems

Key specs

• Radiator size: 240 mm x 30 mm, made from aluminum
• Pump motor: Eighth-generation Asetek three-phase motor, 800–3600 rpm
• Fans: Two 120 mm PWM fans with addressable RGB lighting and magnetic daisy-chain connectors
• Cold plate: Copper, 32% larger surface area than previous generation
• VRM fan speed: Up to 5100 rpm
• Tubing length: 400 mm sleeved rubber with 7 mm inner diameter
• Display: 3.5-inch full-color LCD with 32 MB onboard memory
• Socket compatibility: Intel LGA 1700, 1200, 115x; AMD AM5, AM4

Connectivity and compatibility

This cooler is designed to fit a wide range of modern CPU sockets, making it suitable for both Intel and AMD platforms. The magnetic daisy-chain fan connectors reduce cable clutter and simplify wiring, while PWM control allows precise adjustment of fan speeds to balance cooling performance and noise levels. The addressable RGB lighting integrates seamlessly with compatible motherboard software for synchronized lighting effects.

Performance and reliability

The combination of a large copper cold plate and an efficient Asetek pump ensures steady heat dissipation even under demanding workloads. The embedded VRM fan adds an extra layer of cooling to critical motherboard components, which helps maintain system stability during overclocking or extended use. The aluminum radiator provides a durable and effective heat exchange surface, while the sleeved tubing offers flexibility and durability for various case layouts.

Ideal uses and environments

This liquid cooler is well suited to gamers, content creators, and PC builders who require dependable cooling for high-performance CPUs. Its quiet operation and customizable display make it a strong choice for setups where both aesthetics and thermal management are priorities. Whether you are building a new system or upgrading an existing one, it fits well in mid-tower and full-tower cases with front or top radiator mounting options.