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Black 240 mm radiator with two 120 mm fans, copper pump block showing a 3.5 inch colour LCD, sleeved rubber tubes

ASUS

ASUS ROG RYUJIN II 240 liquid cooler

SKU CH-26M1-PRWJA MPN ROG RYUJIN II 240

240 mm all-in-one liquid CPU cooler with a 3.5" colour LCD, Noctua iPPC-2000 PWM fans and seventh-gen Asetek pump for Intel and AMD sockets

  • Radiator size272 × 121 × 27 mm
  • Fan size2 Fan Slots (120 mm)
  • Compatible socketsIntel LGA 2066 / 2011 / 2011-3 / 1700 / 1366 / 1200 / 1156 /
  • Block dimensions78.15 × 87.5 × 81 mm
  • Cooling block materialCopper
  • Radiator materialAluminum
  • 5" colour LCD shows live stats and custom animations via LiveDash software
  • Seventh-gen Asetek pump runs from 840 rpm for strong cooling with low noise
  • Noctua iPPC-2000 PWM fans move 71.6 CFM at 29.7 dB(A) with FanXpert control
  • Supports Intel LGA1700, LGA1200, AMD AM4, TR4 and more sockets out of the box
  • Embedded micro-fan in pump housing directs airflow onto VRM and M.2 areas

3.5" LCD liquid CPU cooler

The ASUS ROG RYUJIN II 240 is a 240 mm all-in-one liquid cooler with a built-in 3.5 inch colour LCD. It mounts on Intel LGA 2066, 2011, 2011-3, 1700, 1366, 1200, 1156, 1155, 1152, 1151, 1150 and AMD AM4 or TR4 sockets. Two Noctua iPPC 2000 PWM fans and a seventh-generation Asetek pump running from 840 rpm handle the thermal load.

Suited for monitored mainstream builds

Builders who want live temperature read-outs or custom animations on the pump head will use the LIVEDASH software and the embedded micro-fan for VRM and M.2 airflow. Systems that need a larger radiator surface, a different socket mounting kit, or a fan speed range outside 450 to 2000 rpm should look at other cooling solutions.

240 mm radiator with 380 mm tubing

The aluminium radiator measures 272 by 121 by 27 mm and the sleeved rubber tubes are 380 mm long. This single dimension set decides whether the unit fits the case and reaches the CPU socket without strain.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $210.99
Pricier than about 90% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Brand nameASUS
Model name90RC00A0-M0AAY0
Product typeLiquid Cooling System
Product colorBlack
Performance
Fan speed450–2,000 RPM +/- 10%
Fan airflow71.6 CFM
Size & build
Radiator size272 × 121 × 27 mm
Fan size2 Fan Slots (120 mm)
Block dimensions78.15 × 87.5 × 81 mm
Cooling block materialCopper
Radiator materialAluminum
Fan dimensions120 × 120 × 25 mm
Tube size380 mm
Tubing materialSleeved Rubber tube
Shipping weight2.54 kg
Package size307 × 241 × 130 mm
Compatibility
Compatible socketsIntel LGA 2066 / 2011 / 2011-3 / 1700 / 1366 / 1200 / 1156 / 1155 / 1152 / 1151 / 1150
AMD AM4 / TR4*
*The mounting bracket is bundled with TR4 CPU Package.
Environment & compliance
Fan noise level29.7 dB(A)
More details
LED lightingRGB

Questions about this item

The Ryujin II is listed as a 240 mm model — are other radiator sizes available under the same name?

The supplier data covers only the 240 mm radiator with two 120 mm fans and 380 mm tubing; no other size is mentioned for this model.

What does the 2000 RPM top fan speed mean for actual CPU temperatures under load?

The Noctua iPPC-2000 PWM fans can reach 2000 RPM delivering 71.6 CFM at 29.7 dB(A), while the seventh-gen Asetek pump runs from 840 RPM, together moving heat from the CPU through the 272 × 121 × 27 mm aluminum radiator.

The cooler uses a 3-pin ARGB header and a 4-pin PWM fan header — what does that limit in practice?

The included Y-cable combines both 120 mm fans on one 4-pin PWM header for speed control, and the ARGB input cable connects to a standard 3-pin 5 V addressable RGB header for Aura Sync lighting control.

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