ASUS logo MPN: 90RC00K1-M0UAY0

ASUS ROG Ryujin III 240 ARGB Processor All-in-one liquid cooler 12 cm Black 1 pc(s)

Released: Not on record
$353.01 from US · Amazon.com Updated 2 weeks ago Last updated Sep 3, 2026 03:14 UTC
4.0 13 ratings

Ratings & price sourced from Amazon.com (United States).

Fan size
120
Number of fans
2
Type
All-in-one liquid cooler
Weight
1500 g
Tube length
400
Display type
LCD
Mounting kit
Y
Colour
Black
Radiator depth
120
View 42 specifications
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Overview

COOLER THAN COOL
Go cooler than cool with the Ryujin III. An expansive 3.5-inch LCD screen displays live system stats, animated GIFs, or even your own custom artwork. Underneath, a new 8th Gen Asetek pump quietly, paired with larger coolant tubes, keeps the latest processors from Intel and AMD cool, while an embedded Axial-tech fan helps control motherboard VRM temps. And the coolant within flows through a higher capacity radiator graced with three ROG 120 mm ARGB fans that utilize magnets to make installation a snap.

Magnetic Daisy-Chainable Fans
The customizable ARGB fans snap together with a magnetic connector that links the fans and transmits control signals and power. Only one cable is required for all three fans, making installation and cable management a breeze.

Full Color
3.5” LCD Display
Internal memory has also been doubled to support clearer default animations and longer videos.

System Monitoring
The industry-leading 3.5-inch LCD built into the pump block delivers instant monitoring of clock frequencies, voltages, temperatures, fan speeds and water flow, or your custom GIFs

Personalized Animation
Choose a pre-designed animation from the ROG gallery, or easily add one of your own.

Custom Wallpaper
Do you prefer banners or clan logos? Choose one designed by ROG, or put your own text or JPEG file on proud display at the heart of your rig.

Exploded View
The 8th Gen Asetek pump sports a 3-phase motor for higher flow and quieter operation, riding on a larger cold plate ideally sized for the latest Intel and AMD processors.

Cool Upgrades

New Cold Plate
The contact surface is now 32% larger to keep the chill on power hungry processors.

Enhanced Tubing
The sleeved rubber is wrapped in braided mesh, and the inner diameter has been enlarged from 5 mm to 7 mm to reduce flow resistance.

Thicker Radiator
279.5 x 120 x 30 mm radiator — 3mm thicker than previous gen, for improved cooling performance.

Embedded VRM Fan
A larger embedded Axial-tech fan improves airflow, reducing motherboard VRM temperatures by up to 35 Celsius.

Software Personalization

Fan Control
This generation of ROG all-in-one coolers now includes software that lets you control the speeds of your pump and embedded fan, in a way that should be instantly recognizable to FanXpert veterans.

AIDA64 Extreme
The ROG Ryujin III ARGB also comes with a one-year subscription to AIDA 64 Extreme, whose data can be fed live onto the cooler’s LCD screen to get even more info on the state of your system.

EXTENSIVE COMPATIBILITY
The ROG Ryujin III series features 400 mm of tubing and is compatible with a wide range of Intel® and AMD motherboard platforms, giving you ample processor and build flexibility.

Technical Specifications

Logistics & Packaging

4 SPECS
Package depth
241 mm
Package width
307 mm
Package height
135 mm
Package weight
2660 g

Physical

3 SPECS
Type
All-in-one liquid cooler
Weight
1500 g
Colour
Black

Cooling

2 SPECS
Fan size
120
Number of fans
2

General

33 SPECS
Tube length
400
Display type
LCD
Mounting kit
Yes
Radiator depth
120
Radiator width
279.5
Fan speed (max)
2200
Fan speed (min)
600
Max airflow
70.07
Radiator height
30
Screws included
Yes
Warranty period
6
Illumination LED
Yes
Waterblock depth
91
Waterblock width
89
Quantity per pack
1
Radiator material
Aluminum
Suitable location
Processor
Waterblock height
101
Base plate material
Copper
Fan static pressure
3.88
Illumination colour
Multi
Number of fan blades
9
Number of heat pipes
2
Water block material
Copper
Fan noise level (max)
36.45
Pump motor speed (max)
3600
Pump motor speed (min)
800
Installation instruction
Yes
Fan dimensions (W x D x H)
120 x 120 x 25
Minimum airflow (imperial)
21.08
Supported CPU sockets
LGA 1150 (Socket H3),LGA 1151 (Socket H4),LGA 1155 (Socket H2),LGA 1156 (Socket H),LGA 1200 (Socket H5),LGA 1700,Socket AM4,Socket AM5
Fan 2 dimensions (W x D x H)
120 x 120 x 25
Pulse-width modulation (PWM) support
Yes

Market Value History

Sources

Product lifecycle

In production

Still listed as on-market by the manufacturer — actively sold and supported.

Lifecycle status is derived from catalog data and is indicative, not a manufacturer support guarantee.