ASUS ROG Ryujin III 240 ARGB AIO Liquid CPU Cooler - Black
ASUS
ASUS ROG Ryujin III 240 ARGB AIO Liquid CPU Cooler - Black
The ASUS ROG Ryujin III 240 AIO Liquid CPU Cooler is a 240mm all-in-one liquid cooler built for high-end Intel and AMD processors that run hot under load. Its 3.5-inch LCD display shows live system data or custom animations, while an 8th-gen Asetek pump and larger cold plate keep CPU temperatures low, and an embedded VRM fan reduces motherboard heat by up to 35°C.
Why this product
3.5-inch LCD display with animation support
Shows live system stats, custom GIFs and videos in 24-bit colour at 60 FPS. Internal memory doubled to 32 MB allows longer, clearer content.
8th-gen Asetek pump with larger cold plate
32% bigger contact surface and 3-phase motor deliver higher flow, lower noise and better cooling for the latest multi-core CPUs.
Noctua radiator fans for quiet operation
Industrial-grade PPC-2000 PWM fans spin up to 2000 RPM but hold noise to 29.7 dB(A), ideal for setups where acoustics matter.
Embedded VRM cooling fan
Ring-shaped design and optimised airflow reduce heat around the motherboard's power delivery by up to 35°C.
6-year manufacturer warranty
Covers the pump, fans and all components for six years from purchase.
- Radiator size240mm
- Pump generation8th gen Asetek
- Radiator fans2 × 120mm Noctua PPC-2000 PWM
- Display3.5-inch full colour LCD
- Warranty6 years
- SKUASU-2461
- EAN4711387048177
- Intel LGA 1851, 1700, 1200 and 115x socket processors.
- AMD AM5 and AM4 socket processors.
- Requires Armoury Crate software for full control of pump speed, embedded fan, radiator fans and LCD display animations.
- 400 mm braided tubing length suits most standard cases, but very compact builds may require clearance verification.
Best for
- Enthusiasts who want CPU cooling plus live system monitoring on a single integrated display.
- Builders prioritising low acoustic output without sacrificing cooling capacity.
- High-end Intel and AMD systems running sustained multi-threaded workloads.
- Users who value long-term warranty coverage and industrial-grade component reliability.
Trade-offs
- Budget builds or budget-tier CPUs that do not generate significant heat.
- Very compact cases with less than 400 mm of clearance for tubing routing.
- Systems that cannot accommodate a 279.5 x 120 x 30 mm radiator or two 120 mm fans.
- Users who prefer air cooling or passive cooling solutions.
Go cooler than cool with the ROG Ryujin III. Its roomy 3.5-inch LCD screen displays live system stats or your custom artwork and animated GIFs. Underneath, an embedded fan upgraded with Axial-tech improves motherboard VRM thermals by up to 35 Celsius, and an 8th Gen Asetek pump and coldplate combine to deliver even lower CPU temperatures.
Liquid is piped in through generously long braided tubing and chilled by a higher capacity radiator and two famously quiet 120 mm Noctua fans.
Internal memory has also been doubled to support clearer default animations and longer videos.
- 2X Upload Capacity 16 → 32 MB
- 4X Frame Support 500 → 2000 Frames
- 60 FPS
- 24 BIT
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.
- 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.
To overcome the thermal challenges of the latest multi-core CPUs, ROG Ryujin III offers industrial-grade Noctua PPC-2000 PWM radiator fans that deliver high performance and minimal-noise operation.
- 2000 RPM Fan Speed
- 29.7 dB(A) Fan Noise
- 3.94 mm H2O Air Pressure
- 71.6 cfm Airflow
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.
General
| Brand | ASUS |
|---|---|
| Product line | ROG Ryujin III |
| Type | All-in-one liquid CPU cooler |
| Tubing length | 400 mm |
| Tubing material | Sleeved rubber with braided mesh |
| Tubing inner diameter | 7 mm |
Water block
| Dimensions | 89 × 91 × 101 mm |
|---|---|
| CPU plate material | Copper |
| Contact surface increase | 32% larger vs. previous gen |
Pump
| Generation | 8th gen Asetek |
|---|---|
| Motor type | 3-phase |
| Speed range | 800–3600 RPM (±10%) |
Radiator
| Dimensions | 279.5 × 120 × 30 mm |
|---|---|
| Material | Aluminium |
| Thickness increase | 3 mm thicker vs. previous gen |
Fan
| Model | Noctua iPPC-2000 PWM |
|---|---|
| Quantity | 2 × 120mm |
| Speed range | 450–2000 RPM (±10%) |
| Airflow | 71.6 CFM / 121.8 m³/h |
| Static pressure | 3.94 mmH₂O |
| Noise level | 29.7 dB(A) |
| Control mode | PWM / DC |
Embedded VRM fan
| Status | Yes |
|---|---|
| Speed | 5100 RPM (±10%) |
| Air pressure | 5.53 mmH₂O |
| Airflow | 21.08 CFM |
| VRM cooling benefit | Up to 35°C reduction |
Display
| Size | 3.5 inches |
|---|---|
| Type | Full colour LCD |
| Memory capacity | 32 MB |
| Frame support | Up to 2000 frames |
| Frame rate | 60 FPS |
| Colour depth | 24-bit |
Compatibility
| Intel sockets | LGA 1851, 1700, 1200, 115x |
|---|---|
| AMD sockets | AM5, AM4 |
Warranty & accessories
| Manufacturer warranty | 6 years |
|---|---|
| Included software | Armoury Crate, 1-year AIDA64 license |
| Fan connector | 1 × 1-to-2 splitter cable included |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.