We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular water block with 3.5 inch LCD screen, two 120 mm ARGB fans on aluminium radiator, sleeved rubber tubes

ASUS

ASUS ROG RYUJIN II 240 ARGB liquid cooler

SKU CH-XRTS-QNEA0 MPN ROG RYUJIN II 240 ARGB

A 240 mm all-in-one liquid CPU cooler with a 3.5" colour LCD display, seventh-generation Asetek pump starting at 840 rpm, and dual 120 mm ARGB fans delivering 70.07 CFM at 36.45 dB(A)

  • Radiator size272 × 121 × 27 mm
  • Fan size2 Fan Slots (120 mm)
  • Compatible socketsIntel LGA 20xx / 1700 / 1200 / 115x AMD Socket sTRX4 / TR4*
  • Block dimensions78.15 × 87.5 × 81 mm
  • Cooling block materialCopper
  • Radiator materialAluminum
  • Real-time system stats on a 3.5" colour LCD display
  • Seventh-gen Asetek pump operates from 840 rpm for quiet cooling
  • Dual 120 mm ARGB fans deliver 70.07 CFM airflow at 36.45 dB(A)
  • Copper cold plate with aluminium radiator (272 x 121 x 27 mm)
  • Supports Intel LGA 1700/1200/115x and AMD AM4/sTRX4/TR4 sockets

All-in-one liquid CPU cooler

The ASUS ROG RYUJIN II 240 ARGB is an all-in-one liquid cooler built for mainstream Intel and AMD sockets. It fits LGA 20xx, 1700, 1200, 115x and AMD sTRX4, TR4 and AM4 platforms. A bundled bracket covers TR4 and sTRX4 installations. The copper cold plate and aluminium radiator form a sealed loop with 380 mm sleeved rubber tubes.

Capacity and headroom

The 240 mm radiator uses two 120 mm fans spinning between 600 and 2200 RPM to move 70.07 CFM of air. The seventh-generation Asetek pump starts at 840 RPM to circulate coolant through the copper block. This combination handles typical enthusiast thermal loads while leaving headroom for moderate overclocking. Sustained heavy workloads will eventually saturate the radiator surface area.

Thermals noise and power

At full speed the fans reach 36.45 dB(A) while delivering rated airflow. The pump operates quietly at its minimum speed and scales with temperature. ARGB lighting and the 3.5 inch LCD display draw minimal power from the motherboard headers. Fan curves can be tuned via software to prioritise silence or maximum cooling.

How it compares

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

Price $194.99
Pricier than about 89% of the 1,190 comparable items (median $71.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Model nameROG RYUJIN II 240 ARGB
Product typeLiquid Cooling System
Performance
Fan speed600-2,200 RPM
Fan airflow70.07 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 weight2.31 kg
Package size307 × 241 × 130 mm
Compatibility
Compatible socketsIntel LGA 20xx / 1700 / 1200 / 115x
AMD Socket sTRX4 / TR4* / AM4
* The mounting bracket is bundled with TR4/sTRX4 CPU Package.
Environment & compliance
Fan noise level36.45 dB(A)
More details
LED lightingARGB

Questions about this item

Will the ROG RYUJIN II 240 ARGB fit my LGA 1700 motherboard and existing 120 mm case fan mounts?

Yes, the water block supports Intel LGA 1700 and the 272 mm radiator uses two 120 mm fan slots matching standard case mounts.

How can I confirm the seventh-gen Asetek pump is running at its 840 rpm minimum after installation?

Monitor pump speed in ASUS LIVEDASH or your motherboard BIOS; the pump should report at or above 840 rpm when the system is idle.

Does the box include mounting hardware for AMD TR4/sTRX4 or must I buy a separate bracket?

The TR4/sTRX4 mounting bracket is bundled with the cooler, while Intel LGA 1700/1200/115x and AMD AM4 hardware is also included.

More in Liquid Cooling & AIO Coolers

Similar items