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White 420 mm radiator with three 140 mm fans and white CPU block, ARGB lighting visible

Thermaltake

Thermaltake CL-W378-PL14SW-A TH420 V2 ARGB Snow liquid cooler

SKU CH-3ETB-ZNAF0 MPN CL-W378-PL14SW-A

A 420 mm liquid cooler with three 140 mm hydraulic-bearing fans, copper cold plate and ARGB lighting for Intel and AMD sockets

  • TypeLiquid Cooling System
  • Block CompatibilityIntel LGA 2066/2011/1851/1700/1200/1156/1155/1151/1150 AMD A
  • Block MaterialCopper
  • Radiator Size456 x 139 x 27 mm
  • Radiator MaterialAluminum
  • Fan Size3 Fan Slots (140 mm)

Fan Size 3 Fan Slots (140mm)

Struck-through versions exist but are not stocked here.

Color White

  • Broad CPU support with Intel LGA 2066 to 1700 and AMD AM5 to AM2 sockets
  • Quiet operation at 34.7 dB-A with hydraulic-bearing 140 mm fans
  • Strong airflow up to 84.32 CFM from three PWM fans running 500 to 1800 R.P.M
  • Large 456 x 139 x 27 mm aluminum radiator for efficient heat dissipation
  • Addressable RGB lighting on a white finish via 5V 3-pin header

420 mm ARGB liquid cooler for modern Intel

The Thermaltake TH420 V2 ARGB Snow is a closed-loop liquid cooler built around a 456 x 139 x 27 mm aluminium radiator and three 140 mm hydraulic-bearing fans. Its copper cold plate mounts to Intel LGA 2066, 2011, 1851, 1700, 1200, 1156, 1155, 1151 and 1150 as well as AMD AM5, AM4, AM3+, AM3, AM2+ and AM2. White tubing and addressable RGB lighting suit white-themed builds.

Thermals, noise and power draw in normal use

Three 140 mm fans spin between 500 and 1800 RPM via PWM, moving up to 84.32 CFM each while peaking at 34.7 dB-A. The hydraulic bearings keep low-speed operation quiet, and the 4-pin PWM connectors let the motherboard balance airflow against temperature automatically. Rubber tubes 460 mm long give enough reach for most mid-tower layouts without kinking.

White finish and ARGB sync simplify build aesthetics

The all-white radiator, fans and tubing create a consistent look without extra paint or sleeving. A 5 V 3-pin ARGB header connects to compatible motherboards so lighting can be synchronised with other components through standard software. No separate controller or proprietary hub is required, reducing cable clutter inside the case.

Highlights

  • Broad CPU support with Intel LGA 2066 to 1700 and AMD AM5 to AM2 sockets
  • Quiet operation at 34.7 dB-A with hydraulic-bearing 140 mm fans
  • Strong airflow up to 84.32 CFM from three PWM fans running 500 to 1800 R.P.M
  • Large 456 x 139 x 27 mm aluminum radiator for efficient heat dissipation
  • Addressable RGB lighting on a white finish via 5V 3-pin header

Specifications

BrandThermaltake
SeriesTH420 V2 ARGB Snow
ModelCL-W378-PL14SW-A
TypeLiquid Cooling System
Block CompatibilityIntel LGA 2066/2011/1851/1700/1200/1156/1155/1151/1150
AMD AM5/AM4/AM3+/AM3/AM2+/AM2
Block MaterialCopper
Radiator Size456 x 139 x 27 mm
Radiator MaterialAluminum
Fan Size3 Fan Slots (140 mm)
Fan Dim.140 x 140 x 25 mm
Bearing TypeHydraulic Bearing
Fan RPMPWM 500~1800 R.P.M
Fan Air Flow84.32 CFM Max.
Fan Noise34.7 dB-A
Fan Connector2510 - 4 Pin PWM , 5V ARGB header - 3 Pin
ColorWhite
LED ColorARGB
Tube Dim.Length: 460 mm
Tube MaterialRubber
Shipping weight2.79 kg
Package size508 × 216 × 152 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I mount the TH420 V2 ARGB Snow on an AMD AM5 socket, and which step is most often missed?

Attach the AMD retention bracket to the copper cold plate first, then secure the four spring-loaded screws in a cross pattern; the step most often missed is plugging the 2510 4-pin PWM and 5V ARGB 3-pin connectors into the motherboard headers before tightening the block.

What maintenance will the 460 mm rubber tubes and hydraulic-bearing fans need after a year of use?

Check the rubber tubes for seepage at the barbed fittings and wipe dust from the 140 mm fan blades; hydraulic bearings are sealed, so no lubrication is required, but plan to replace the coolant every two to three years to prevent algae buildup.

At what point does the 34.7 dB-A noise ceiling limit sustained cooling on this 420 mm radiator?

The fans hit 34.7 dB-A at their maximum 1800 RPM, so once the coolant temperature pushes the PWM curve to 1800 RPM the noise stops rising but heat dissipation plateaus at the 84.32 CFM airflow limit.

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