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Compact copper heatsink with 70 mm vertical blower fan, matte metal finish

Dynatron

Dynatron R13 CPU cooler 70 mm 2-ball bearing

SKU CH-J3BS-41KJQ MPN R13

A 70 mm dual-ball-bearing blower cooler with copper skived-fin heatsink delivering 14.321 CFM at 6000 RPM and 53.8 dBA maximum noise

  • TypeFan & Heatsinks
  • Fan Size70mm
  • Bearing Type2 Ball Bearing
  • RPMAt Duty Cycle 20%: 1100 RPM At Duty Cycle 50%: 2600 RPM At D
  • Air FlowAt Duty Cycle 20%: 2.453 CFM At Duty Cycle 50%: 5.798 CFM At
  • Noise LevelAt Duty Cycle 20%: 19.1 dBA At Duty Cycle 50%: 34.2 dBA At D
  • Quiet cooling at 19.1 dBA on 20% duty cycle
  • Strong airflow reaches 14.321 CFM at full speed
  • Copper skived-fin heatsink conducts heat efficiently
  • 2-ball bearing fan rated for long service life
  • Compact 70 mm footprint fits tight builds

Targeted server cooling

The Dynatron R13 is a compact CPU air cooler built for Intel Sandy Bridge EP and EX processors using the narrow ILM mounting pattern. Its 70 mm fan and copper skived-fin heatsink fit tight server chassis where standard tower coolers cannot be installed.

PWM speed and airflow range

A 4-pin connector lets the motherboard vary the fan between three duty-cycle points. At 20 % the fan runs at 1100 RPM moving 2.453 CFM at 19.1 dBA. At 50 % it reaches 2600 RPM for 5.798 CFM at 34.2 dBA. At 100 % it spins to 6000 RPM delivering 14.321 CFM at 53.8 dBA.

Copper construction and vertical mount

The heatsink uses copper with skived fins measuring 102.0 x 70.0 x 28.0 mm overall, while the fan itself is 70 x 70 x 15 mm. The vertical mounting orientation directs exhaust toward the chassis rear or top panel. Total weight is 0.88 lbs, and the 2-ball bearing is rated for continuous server duty.

Highlights

  • Quiet cooling at 19.1 dBA on 20% duty cycle
  • Strong airflow reaches 14.321 CFM at full speed
  • Copper skived-fin heatsink conducts heat efficiently
  • 2-ball bearing fan rated for long service life
  • Compact 70 mm footprint fits tight builds

Specifications

BrandDynatron
ModelR13
TypeFan & Heatsinks
Fan Size70mm
Bearing Type2 Ball Bearing
RPMAt Duty Cycle 20%: 1100 RPM
At Duty Cycle 50%: 2600 RPM
At Duty Cycle 100%: 6000 RPM
Air FlowAt Duty Cycle 20%: 2.453 CFM
At Duty Cycle 50%: 5.798 CFM
At Duty Cycle 100%: 14.321 CFM
Noise LevelAt Duty Cycle 20%: 19.1 dBA
At Duty Cycle 50%: 34.2 dBA
At Duty Cycle 100%: 53.8 dBA
Power Connector4 Pin
Heatsink MaterialCopper Heatsink with Skiving Fins
Fan Mounting Types to HeatsinkVertical
Fan Dimensions70 x 70 x 15 mm
Heatsink Dimensions102.0 x 70.0 x 28.0 mm (Overall)
Weight0.88 lbs.
FeaturesCPU Support: Intel Sandy Bridge EP / EX Processors (for Narrow ILM Mounting Only)
Shipping weight0.53 kg
Package size130 × 109 × 61 mm

Questions about this item

How often will the 2-ball bearing fan need replacement?

The dual ball-bearing design is rated for longer continuous operation than sleeve alternatives, so the fan itself should not require scheduled replacement under normal use.

What thermal limit appears first when the cooler runs at 100 % duty cycle?

At 6000 RPM the airflow reaches 14.321 CFM, but the noise rises to 53.8 dBA, making acoustic comfort the practical ceiling before thermal saturation.

How loud and hot does the unit get during all-day operation at 50 % duty?

At 50 % duty the fan spins at 2600 RPM, moves 5.798 CFM and produces 34.2 dBA, a level suitable for continuous background use without excessive heat buildup.

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