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White 420 mm radiator with three 140 mm A-RGB fans and integrated VRM fan

ARCTIC

ARCTIC Liquid Freezer III Pro 420 A-RGB White liquid cooler

SKU CH-0DJG-V5MXN

A 420 mm radiator with three 140 mm A-RGB fans cools overclocked CPUs on AMD AM5 and Intel LGA1851, LGA1770, LGA1700 and LGA1200 sockets

  • Block CompatibilityAMD Socket AM5
  • Block Dim.17.5 L x 6 W x 2.7 H inches, 45.8 L x 13.8 W x 6.8 H centime
  • Block MaterialCopper
  • DisplayARCTIC
  • Pump Speed2500 rpm
  • Pump Dim.17.5 L x 6 W x 2.7 H inches

Model LF III PRO 420

Color White

LED ARGB

  • 420 mm radiator with three 140 mm fans moves 110 CFM for strong thermal headroom
  • Pump spins at 2500 rpm with ceramic bearing for quiet 1 sone operation
  • Offset cold-plate design targets CPU hotspot on Intel LGA1700 and AMD AM5
  • Integrated VRM fan adds directed airflow to voltage regulators
  • Cable routing inside tubing sheath leaves only one visible motherboard connection

420 mm radiator for high-end CPUs

The ARCTIC Liquid Freezer III Pro 420 A-RGB White uses a 420 mm radiator with three 140 mm fans to move heat away from modern desktop processors. It mounts on AMD AM5 and AM4 sockets as well as Intel LGA 1851, 1770, 1700 and 1200 platforms. An integrated VRM fan and offset cold-plate design target the CPU hotspot directly. Builders who need a smaller radiator or a non-RGB aesthetic should look elsewhere.

Sustained load behaviour

At 2500 rpm the pump and each fan deliver 110 cubic feet per minute of airflow while the ceramic-bearing pump circulates coolant through 420 mm tubes. The copper cold plate and radiator spread heat across the full 360 mm core width so temperatures stay stable during long rendering or compile sessions. PWM control lets the fans ramp only when the CPU demands it. Systems that run short bursts followed by long idle periods will not see the full benefit.

Thermals noise and power

The pump runs at 1 sone and each fan matches that figure at the same 2500 rpm ceiling, keeping acoustic output low even when the cooler is pushed. A single combined PWM cable routes through the tube sheathing, reducing internal clutter and leaving one motherboard header for the whole unit. The white finish and A-RGB lighting add visual presence without affecting thermal performance. Users who prefer completely silent operation at idle may want a larger surface area or lower-speed fans.

Ciri-ciri utama

  • 420 mm radiator with three 140 mm fans moves 110 CFM for strong thermal headroom
  • Pump spins at 2500 rpm with ceramic bearing for quiet 1 sone operation
  • Offset cold-plate design targets CPU hotspot on Intel LGA1700 and AMD AM5
  • Integrated VRM fan adds directed airflow to voltage regulators
  • Cable routing inside tubing sheath leaves only one visible motherboard connection

Spesifikasi

BrandAlphacool
Part NumberACFRE00189A
Block CompatibilityAMD Socket AM5
Block Dim.17.5 L x 6 W x 2.7 H inches, 45.8 L x 13.8 W x 6.8 H centimeters
Block MaterialCopper
DisplayARCTIC
Pump Speed2500 rpm
Pump Dim.17.5 L x 6 W x 2.7 H inches
Pump BearingCeramic
Pump Capacity110 cubic_feet_per_minute
Pump Noise1 sones
Radiator Size360 mm
Radiator MaterialCopper
Fan Dim.45.8 L x 13.8 W x 6.8 H centimeters
Fan RPM2500 rpm
Fan Air Flow110 cubic_feet_per_minute
Fan Noise1 sones
Fan Connector4 Pin
Tube Dim.420mm
Tube MaterialPlastic
Reservoir Dim.45.8 L x 13.8 W x 6.8 H centimeters, 17.5 L x 6 W x 2.7 H inches
FeaturesLiquid Freezer III 420 A-RGB - white, 1 sones
Package ContentsLiquid Freezer III 420 A-RGB - white

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How loud is the pump and the three 140 mm fans at 2500 rpm when the system runs all day?

The pump and each fan are rated at 1 sone, so the combined acoustic output stays very low even during extended full-load sessions.

Which motherboard sockets and mounting hardware must already be present for the cooler to install?

The kit includes brackets for AMD AM5 and AM4 plus Intel LGA 1851, 1770, 1700 and 1200, so a board with one of those sockets is all that is required.

Will the 420 mm radiator and integrated VRM fan clear tall memory modules and older ATX cases designed for 360 mm coolers?

The radiator measures 420 mm in length, so the case must support that size; the offset cold-plate and integrated VRM fan are designed to avoid interference with taller DIMMs on supported platforms.

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