ASUS ProArt LC 420 All-in-One CPU Liquid Cooler

The ASUS PROART LC 420 is an all-in-one CPU liquid cooler built for creators, gamers, and professionals who need dependable temperature control during demanding workloads.

Cooling starts with a 420 mm aluminum radiator that partners with three Noctua NF-A14 industrial fans. Each 140 mm fan can spin up to 2,000 rpm and move as much as 107 CFM of air, keeping high-core-count processors stable while noise tops out at only 31.5 dB(A). The extended 450 mm sleeved rubber tubing lets you position the radiator easily inside spacious full-tower or workstation cases.

A copper CPU plate and a 3-phase motor pump draw heat away quickly and circulate coolant efficiently. On the water block you will find an illuminated display that shows real-time data such as fan speed and temperature, so you can monitor system status at a glance without leaving your creative app or game.

The included mounting hardware supports Intel LGA 1700, 1200, and 115x sockets along with AMD AM5 and AM4 platforms. Whether you are assembling a new rig with the latest processors or upgrading an existing build, installation remains straightforward.

With its large radiator surface, quiet high-pressure fans, and at-a-glance monitoring, the ProArt LC 420 is suited for long 3D rendering sessions, video editing marathons, or extended gaming nights where sustained performance and low acoustic impact are essential.

• 420 mm aluminum radiator with 450 mm sleeved tubing
• Three 140 mm Noctua NF-A14 PWM fans
• Copper CPU plate with 3-phase motor pump
• Real-time display of system stats on the water block
• Intel LGA 1700/1200/115x and AMD AM5/AM4 socket support
• Noise level up to 31.5 dB(A) at full speed
• Maximum airflow of 107 CFM per fan