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Black AIO liquid cooler with 420 mm radiator three 140 mm A-RGB fans and integrated VRM fan

ARCTIC

ARCTIC Liquid Freezer III Pro 420 A-RGB liquid cooler

SKU CH-98GN-11SPK

A 420 mm radiator with three 140 mm A-RGB fans cools AMD AM5 and Intel LGA 1851, 1700, 1200 CPUs

  • Block CompatibilityAMD Socket AM5
  • Block Dim.17.5 L x 6 W x 2.7 H inches
  • 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 Black

LED ARGB

  • Optimised contact pressure for Intel LGA1851 and LGA1700 extends CPU lifespan
  • Offset cold-plate centres on CPU hotspot for more efficient heat transfer
  • Three 140 mm A-RGB fans deliver 110 CFM airflow at 2500 rpm
  • Integrated PWM VRM fan cools voltage regulators for stable operation
  • Cable routing inside hose sheathing leaves only one visible motherboard connection

Premium AIO for High-Performance CPUs

The Arctic Liquid Freezer III Pro 420 A-RGB is an all-in-one liquid cooler built for modern high-performance processors. It supports AMD AM5 and AM4 sockets alongside Intel LGA1851, LGA1700 and LGA1200 platforms. A 420mm radiator paired with three 140mm A-RGB fans provides substantial thermal capacity for demanding workloads. Integrated VRM cooling and a contact frame for Intel sockets complete the package.

Copper Cold Plate with Offset Mounting

The copper cold plate measures 17.5 by 6 by 2.7 inches and uses a ceramic-bearing pump rated at 2500 rpm. Native offset mounting shifts the plate centre toward the CPU hotspot for more efficient heat transfer on both Intel and AMD platforms. A contact frame optimises pressure distribution for LGA1851 and LGA1700 sockets. Fan PWM cables are integrated inside the tube sheathing so only a single cable connects to the motherboard.

Quiet Operation at 1 Sone Under Load

Three P14 Pro fans deliver 110 cubic feet per minute each at 2500 rpm while the pump and fans each register 1 sone. The 360mm copper radiator provides the surface area needed to dissipate heat without pushing fan speeds to uncomfortable levels. Plastic tubing routes cleanly between the block and radiator. A-RGB lighting adds visual flair without affecting acoustic or thermal performance.

Points forts

  • Optimised contact pressure for Intel LGA1851 and LGA1700 extends CPU lifespan
  • Offset cold-plate centres on CPU hotspot for more efficient heat transfer
  • Three 140 mm A-RGB fans deliver 110 CFM airflow at 2500 rpm
  • Integrated PWM VRM fan cools voltage regulators for stable operation
  • Cable routing inside hose sheathing leaves only one visible motherboard connection

Caractéristiques

BrandAlphacool
Part NumberACFRE00185A
Block CompatibilityAMD Socket AM5
Block Dim.17.5 L x 6 W x 2.7 H inches
Block MaterialCopper
DisplayARCTIC
Pump Speed2500 rpm
Pump Dim.17.5 L x 6 W x 2.7 H inches
Pump BearingCeramic
Pump Noise1 sones
Radiator Size360 mm
Radiator MaterialCopper
Fan Dim.17.5 L x 6 W x 2.7 H inches
Fan RPM2500 rpm
Fan Air Flow110 cubic_feet_per_minute
Fan Noise1 sones
Fan Connector4 Pin
Tube Dim.us:5
Tube MaterialPlastic
Reservoir Dim.17.5 L x 6 W x 2.7 H inches
FeaturesLiquid Freezer III 420 A-RGB, 1 sones
Package ContentsLiquid Freezer III 420 A-RGB

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Questions sur cet article

What socket standard does the contact frame support, and what does it cap in practice?

The contact frame supports Intel LGA1851 and LGA1700 sockets and caps mounting pressure to protect the CPU die from uneven stress.

What radiator length and fan count does the 420 mm unit need to fit?

The 420 mm radiator uses three 140 mm fans and measures 17.5 inches long, so the case must clear that length plus fan thickness.

How is the pump installed on AM5, and which step is often missed?

Mount the pump with the native offset toward the hotspot, then connect the single integrated PWM cable to the motherboard header.

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