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Compact silver aluminium radial-fin heatsink with centred 77 mm fan, 62 mm tall

Dynatron

Dynatron R9 77mm 2 Ball CPU Cooler LGA 2011 62mm height

SKU CH-ZRKB-D0E6H MPN R9

Low-profile 77 mm dual-ball-bearing cooler with copper-insert aluminium heatsink fits LGA 2011 sockets in 62 mm height

  • Fan size77 mm
  • Supported CPU socketsIntel LGA 2011 (Square Type)
  • Bearing design2 Ball
  • Rotational speedAt Duty Cycle 20%: 1,000 RPM At Duty Cycle 50%: 2,500 RPM At
  • Airflow rateAt Duty Cycle 20%: 10.12 CFM At Duty Cycle 50%: 25.3 CFM At
  • Operating noiseAt Duty Cycle 20%: 13.14 dBA At Duty Cycle 50%: 33.04 dBA At
  • Quiet operation at low load with 13.14 dBA at 20% duty cycle
  • Strong airflow when needed reaching 45.56 CFM at 100% duty cycle
  • Durable 2 Ball bearing fan rated for continuous high speed use
  • Compact 62 mm height fits tight server and workstation chassis
  • Copper inserted aluminium heatsink improves heat transfer for Intel LGA 2011 CPUs

LGA 2011 low-profile air cooler

The Dynatron R9 is a compact CPU air cooler built for Intel LGA 2011 square-type sockets. It targets system builders who need to cool Sandy Bridge EP and EX processors inside space-constrained chassis where taller towers cannot fit. The unit ships new and weighs 1.08 lbs.

62 mm height frees upper motherboard zones

A 62 mm overall height clears the area above the socket for tall memory modules or voltage-regulator heatsinks. The 77 mm fan mounts vertically on an aluminium extruded radial fin stack with a copper insert, drawing air through the fins and exhausting it toward the rear of the case. A standard 4-pin PWM connector allows the motherboard to regulate speed automatically.

Dual-ball bearing sustains 4500 RPM under load

At a 20 % duty cycle the fan spins at 1000 RPM, moving 10.12 CFM at 13.14 dBA. At 50 % it reaches 2500 RPM for 25.30 CFM at 33.04 dBA. At 100 % duty cycle the speed rises to 4500 RPM, delivering 45.56 CFM while the noise level reaches 45.9 dBA, showing how the cooler behaves when the CPU maintains a heavy thermal load.

How it compares

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

Price $19.99
Typical for this category: the median of 1,559 items is $19.99.
Fan size 77 mm
Typical for this category: the median of 812 items is 80 mm.

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Specifications

Product
Brand nameDynatron
Model nameR9
Product typeFan & Heatsinks
Performance
Rotational speedAt Duty Cycle 20%: 1,000 RPM
At Duty Cycle 50%: 2,500 RPM
At Duty Cycle 100%: 4,500 RPM
Airflow rateAt Duty Cycle 20%: 10.12 CFM
At Duty Cycle 50%: 25.3 CFM
At Duty Cycle 100%: 45.56 CFM
Power
Power input connector4 Pin
Size & build
Fan size77 mm
Bearing design2 Ball
Cooler materialAluminum Extruded Radial Fin Heatsink with Copper Inserted
Fan mountingVertical
Heatsink dimensions90.0 × 90.0 × 62.0 mm (Overall)
Product weight1.08 lb (0.49 kg)
Shipping weight0.51 kg
Package size112 × 112 × 94 mm
Compatibility
Supported CPU socketsIntel LGA 2011 (Square Type)
CPU cooler height limit62 mm
Environment & compliance
Operating noiseAt Duty Cycle 20%: 13.14 dBA
At Duty Cycle 50%: 33.04 dBA
At Duty Cycle 100%: 45.9 dBA

Questions about this item

How loud is the fan when running at full 4500 RPM all day?

At 100% duty cycle the fan produces 45.9 dBA while moving 45.56 CFM, so sustained full-speed operation is audible in a quiet room.

What thermal limit appears first during continuous load?

The aluminum extruded radial fin heatsink with copper insert and 45.56 CFM maximum airflow define the cooling ceiling before temperatures rise.

Which motherboard socket must I already have for this cooler to fit?

It mounts only on Intel LGA 2011 (Square Type) sockets and supports Sandy Bridge EP/EX processors.

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