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Black dual-tower CPU cooler with two 120mm ARGB fans and six heat pipes

be quiet!

be quiet! Pure Rock Pro 3 LX CPU Cooler BK043

SKU CH-AXYT-Z60BB MPN BK043

A 120 mm dual-fan air cooler with six 6 mm heat pipes and a 250 W TDP rating, reaching 34.8 dBA at 2000 RPM for Intel LGA 1700, 1851 and AMD AM5 sockets

  • Fan size120 mm
  • Supported CPU socketsAMD Socket AM4 / AMD Socket AM5 / Intel LGA 1150 / Intel LGA
  • Bearing designRifle
  • TDP250 W
  • Rotational speed2,000 RPM max
  • Airflow rate61.8 CFM / 105.1 m3/h max
  • High cooling capacity handles 250W TDP CPUs
  • Six 6mm heat pipes with nickel-plated base
  • Dual 120mm PWM ARGB fans move 61.8 CFM
  • Quiet 34.8 dBA at maximum 2000 RPM
  • Compact 152mm height fits RAM and VRM coolers

Pure Rock Pro 3 LX ARGB cooler

The Pure Rock Pro 3 LX is a dual-tower air cooler built around six 6 mm nickel-plated heat pipes and two Light Wings LX 120 mm PWM ARGB fans. It targets builders who want strong thermal headroom for modern high-wattage CPUs while keeping the interior visually striking with addressable lighting.

Suits overclocked Ryzen 9 or Core i9 builds.

The 250 W TDP rating and 152 mm overall height make it a good match for heavily loaded workstations or enthusiast rigs with standard ATX layouts. Builders using small-form-factor chassis or low-profile memory modules that sit very close to the socket should look at something else because the cooler’s vertical footprint and offset design need clearance above the motherboard.

250 W TDP ceiling decides the fit

With a maximum heat dissipation of 250 W the cooler handles flagship desktop processors at stock or moderate overclocks. If your chosen CPU regularly exceeds that thermal load under sustained workloads the cooler will not maintain target temperatures.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $51.99
Pricier than about 90% of the 1,559 comparable items (median $19.99).
Fan size 120 mm
Higher than about 80% of the 812 comparable items (median 80 mm).

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Specifications

Product
Brand namebe quiet!
Model namePure Rock Pro 3 LX
Part numberBK043
Product colorBlack
Performance
Rotational speed2,000 RPM max
Airflow rate61.8 CFM / 105.1 m3/h max
Static pressure2.51mmH2O
Processor
TDP250 W
Power
Power input connector4-pin PWM
Size & build
Fan size120 mm
Bearing designRifle
Cooler materialAluminum
Fan mountingVertical
Heatsink dimensions155 × 124 × 114 mm
Product weight1094g
Shipping weight1.36 kg
Package size206 × 178 × 159 mm
Compatibility
Supported CPU socketsAMD Socket AM4 / AMD Socket AM5 / Intel LGA 1150 / Intel LGA 1151 / Intel LGA 1155 / Intel LGA 1200 / Intel LGA 1700 / Intel LGA 1851
CPU cooler height limit152 mm
Environment & compliance
Operating noise34.8 dBA max
More details
LED lightingNon LED

Questions about this item

How loud and hot does the Pure Rock Pro 3 LX get when running at full 2000 RPM all day?

At maximum speed the cooler reaches 34.8 dBA and moves 61.8 CFM, with a rated 250 W TDP capacity to handle sustained loads.

What motherboard socket must I already have for the BK043 to mount correctly?

The mounting kit supports Intel LGA 1851, 1700, 1200, 1150, 1151, 1155 and AMD AM5, AM4 sockets.

Will the 152 mm tall heatsink clear my existing tall RAM modules or VRM heatsinks?

The compact offset design provides high RAM and VRM cooler compatibility, while the 152 mm height fits most mid-tower cases.

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