be quiet! Pure Rock Pro 3 LX Black

Air · 155 mm tall · cools 250 W

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Type Air
Fan size 2x 120 mm
Height 155 mm
Rated cooling 250 W
sockets LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5

be quiet! Pure Rock Pro 3 LX Black is an air CPU cooler with 2x 120 mm fans. Check that it supports your CPU socket and fits your cabinet.

Specifications

Key specs

Type: Air
Fan size: 2x 120 mm
Height: 155 mm
Rated cooling: 250 W
sockets: LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5
Part number: BK043
EAN / UPC: 4260052192528

Performance

Suitable location: Processor
Type: Air cooler
Fan diameter: 12 cm
Supported processor sockets: LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5
Rotational speed (max): 2000 RPM
Noise level (low speed): 14 dB
Noise level (high speed): 34.8 dB
Maximum airflow: 61.8 cfm
Airflow: 105.1 m³/h
Maximum air pressure: 2.51 mmH2O
Pulse-width modulation (PWM) support: Yes
Bearing type: Rifle bearing
Quantity per pack: 1 pc(s)
Fan's mean time to failure (MTTF): 60000 h

Design

Product colour: Black
Base plate material: Copper
Number of fans: 2 fan(s)
Fins material: Aluminium
Number of heat pipes: 6
Illumination LED: Yes
Illumination colour: Multi
Fan connector: 4-pin
Display type: Not applicable

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Power

Fan power consumption: 5.4 W
Thermal Design Power (TDP): 250 W
Fan voltage: 12 V
Fan current: 0.1 A

Weight & dimensions

Width: 124 mm
Depth: 139 mm
Height: 155 mm
Radiator width: 12.4 cm
Radiator depth: 11.4 cm
Radiator height: 15.5 cm
Weight: 1.08 kg
Fan dimensions (W x D x H): 120 x 120 x 25 mm
Fan thickness: 2.5 cm
Heat pipes diameter: 6 mm
Cable length: 0.12 m

Technical details

Warranty period: 3 year(s)
Sustainability certificates: Triman
Compliance certificates: CE, RoHS, TÜV mark, UKCA, UL, WEEE

Check the manufacturer's page before buying.

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About this product

Impressively performant and compact Boost your system with the impressively high cooling performance of Pure Rock Pro 3 LX and spectacularly illuminated Light Wings LX fans. Underneath its striking heatsink with a black cover for a sleek, premium look lies a powerhouse of cooling technology. Thanks to a nickel-plated base, the heat is distributed evenly among all 6 heat pipes, and Pure Rock Pro 3 LX is compatible with liquid metal thermal grease.

User manual (PDF) · Datasheet (PDF)

Pure Rock Pro 3 LX Black vs similar CPU coolers

	be quiet! Pure Rock Pro 3 LX Black	be quiet! Pure Rock Pro 3	be quiet! Pure Rock Pro 3 Black	Mars Gaming MCPU-XU6W CPU Cooler
Type	Air	Air	Air	Air
Fan size	2x 120 mm	2x 120 mm	2x 120 mm	2x 120 mm
Height	155 mm	155 mm	155 mm	155 mm
Rated cooling	250 W	250 W	250 W	350 W
sockets	LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5	LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5	LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1200 (Socket H5), LGA 1700, LGA 1851, Socket AM4, Socket AM5	LGA 1150 (Socket H3), LGA 1151 (Socket H4), LGA 1155 (Socket H2), LGA 1156 (Socket H), LGA 1200 (Socket H5), LGA 1366 (Socket B), LGA 1700, LGA 2011 (Socket R), LGA 2066, Socket AM2, Socket AM2+, Socket AM3, Socket AM3+, Socket AM4, Socket AM5, Socket FM1, Socket FM2
Released	—	—	—	2025