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be quiet! Pure Rock Slim Cooler Review

Rating: 7.0.

When you think of be quiet! air coolers, you probably think of their massive coolers, such as the Dark Rock or Dark Rock Pro. The Pure Rock Slim is a different beast entirely, though, as it is a minuscule air cooler that boasts just 3 heatpipes and a 92mm fan. Is there a market for something like this?

In the grand scheme of things, this cooler is also quite cheap, coming in at £24.95. Whether or not this means the be quiet! Pure Rock Slim is competitive is another matter, though, so let’s dive right into the review and find out.


Main Specification:

  • Overall dimensions without mounting material (L x W x H), (mm): 81.8 x 97 x 124.8
  • TDP (W): 120
  • Backplate Mounting: Yes
  • Fan model: 1x silence-optimized be quiet! fan
  • Overall noise level (dB(A)) @ 50/75/100% (rpm): 13.1 / 19.2 / 25.4

Heatsink Specification:

  • Dimensions (mm): 56.2 x 97 x 124.8
  • Number of fins: 33
  • Fin material: Aluminium
  • Base material: Copper
  • CPU contact surface: CNC machined
  • Heatpipe number / Diameter (mm): 3, 6

Fan Specification:

  • Fan dimensions (mm): 92 x 92 x 25
  • Speed @ 100% PWM (rpm): 2,000
  • Air flow @ 12V (cfm / m3/h): 35.14 / 59.38
  • Air pressure @ 12V (mm H2O): 1.67
  • Bearing type: Sleeve
  • Motor technology: 4-pole fan motor
  • Rated voltage (V): 12
  • Input current (A): 0.32
  • Input power (W): 3.84
  • Connector: 4-pin PWM
  • Cable length (mm): 220
  • Lifespan (h / 25°C):80,000

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