be quiet! Silent Loop 3 420 mm

Liquid (420 mm)

See today's price, delivery and offers at the store.

Type Liquid (420 mm)
Fan size 3x 140 mm
sockets LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5, Socket TR4, Socket TR5

be quiet! Silent Loop 3 420 mm is an all-in-one liquid CPU cooler with 3x 140 mm fans. Check that it supports your CPU socket and fits your cabinet.

Specifications

Key specs

Type: Liquid (420 mm)
Fan size: 3x 140 mm
sockets: LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5, Socket TR4, Socket TR5
Part number: BW026
EAN / UPC: 4260052192559

Performance

Suitable location: Processor
Type: All-in-one liquid cooler
Fan diameter: 14 cm
Supported processor sockets: LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5, Socket TR4, Socket TR5
Noise level (low speed): 19.4 dB
Noise level (high speed): 34.3 dB
Maximum airflow: 78.4 cfm
Airflow: 133.2 m³/h
Maximum air pressure: 2.36 mmH2O
Pulse-width modulation (PWM) support: Yes
Bearing type: Fluid Dynamic Bearing (FDB)
Pump connector: 4-pin
Quantity per pack: 1 pc(s)
Pump motor speed: 3500 RPM
Pump motor speed (min): 1700 RPM
Pump motor speed (max): 3500 RPM
Fan speed (max): 1900 RPM
Fan's mean time to failure (MTTF): 300000 h

Design

Product colour: Black
Radiator material: Aluminum
Base plate material: Copper
Number of fans: 3 fan(s)
Illumination LED: Yes
Illumination colour: Multi
LED connector type: 3-pin
Fan connector: 4-pin
Display type: Not applicable

View all specifications +4 more sectionsShow fewer specifications

Power

Fan power consumption: 3.6 W
LED voltage: 5 V
Fan voltage: 12 V
Fan current: 0.3 A

Weight & dimensions

Width: 140 mm
Depth: 52 mm
Height: 475 mm
Radiator width: 14 cm
Radiator depth: 45.7 cm
Radiator height: 2.7 cm
Tube length: 40 cm
Waterblock width: 8 cm
Waterblock depth: 5.6 cm
Waterblock height: 9.35 cm
Weight: 2.01 kg
Fan dimensions (W x D x H): 120 x 120 x 25 mm
Cable length: 0.5 m

Technical details

Warranty period: 3 year(s)
Sustainability certificates: Triman
Compliance certificates: CE, Federal Communications Commission (FCC), RoHS, UKCA, WEEE

Other features

Thermal grease: Yes

Check the manufacturer's page before buying.

Ready to buy? Get the be quiet! Silent Loop 3 420 mm at today's price.Buy now

About this product

Superior technology and cooling Silent Loop 3 420mm is the virtually inaudible and incredibly high performing All-in-One water cooling unit with state-of-the-art technology. Silent Loop 3 is the epitome of a German engineered piece of hardware that embodies what be quiet! is associated with.

User manual (PDF) · Datasheet (PDF)

Silent Loop 3 420 mm vs similar CPU coolers

	be quiet! Silent Loop 3 420 mm	ARCTIC Liquid Freezer III Pro 420 A-RGB (White) - Multi Compatible All-in-One CPU Water Cooler	ARCTIC Liquid Freezer III Pro 420 A-RGB Multi Compatible All-in-One CPU Water Cooler with A-RGB	ARCTIC Liquid Freezer III 420 A-RGB Multi Compatible All-in-One CPU Water Cooler with A-RGB
Type	Liquid (420 mm)	Liquid (420 mm)	Liquid (420 mm)	Liquid (420 mm)
Fan size	3x 140 mm	3x 140 mm	3x 140 mm	3x 140 mm
sockets	LGA 1851, LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, Socket AM4, Socket AM5, Socket TR4, Socket TR5	LGA 1700, LGA 1851, Socket AM4, Socket AM5	LGA 1700, LGA 1851, Socket AM4, Socket AM5	LGA 1851, LGA 1700, Socket AM4, Socket AM5
Released	—	2025	2025	2024