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Compact copper heatsink with vertical 75mm fan, 28mm tall

Dynatron

Dynatron K2 75mm 2 Ball CPU Cooler LGA 1156 1155 1151 Copper 28mm

SKU CH-SPPS-TZQRB MPN K2

Low-profile 75 mm dual-ball-bearing fan on a copper heatsink fits Intel LGA 1156, 1155 and 1151 sockets in 28 mm height

  • Fan size75 mm
  • Supported CPU socketsIntel LGA 1156 / 1155 / 1151
  • Bearing design2 Ball
  • Rotational speedAt Duty Cycle 20%: 1,000 RPM At Duty Cycle 50%: 2,500 RPM At
  • Airflow rateAt Duty Cycle 20%: 6.0 CFM At Duty Cycle 50%: 8.3 CFM At Dut
  • Operating noiseAt Duty Cycle 20%: 21.0 dBA At Duty Cycle 50%: 37.8 dBA At D
  • Fits Mini-ITX builds with 28 mm height limit
  • Dual-ball bearing fan runs at 1000 RPM on 20 % duty cycle
  • Copper heatsink draws heat from supported Intel LGA 1156 / 1155 / 1151 CPUs
  • 4-pin PWM connector enables speed control from 1000 to 4000 RPM
  • Quiet 21.0 dBA at low speed for near-silent operation

Mini-ITX Copper Cooler, 28 mm Tall

The Dynatron K2 is a low-profile CPU air cooler built for Mini-ITX systems. It mounts vertically on Intel LGA 1156, 1155 and 1151 sockets using a copper heatsink and a 75 mm dual-ball-bearing fan. The total assembly height is 28 mm, fitting tight chassis clearances.

Suits compact Intel builds; not for other sockets

This cooler serves builders using supported Core i3, Core i5 or Pentium processors on the three listed LGA platforms. Buyers with different Intel sockets or non-Intel platforms cannot use this cooler. It also does not suit cases that require a cooler taller than 28 mm.

28 mm maximum cooler height decides fit

The single specification that determines compatibility is the 28 mm overall height. Measure the space between the motherboard and the side panel or any overhead component; if the gap is 28 mm or less, the K2 will install. If the gap is smaller, a different low-profile solution is required.

How it compares

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

Price $40.99
Pricier than about 86% of the 1,559 comparable items (median $19.99).
Fan size 75 mm
Typical for this category: the median of 812 items is 80 mm.

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Specifications

Product
Brand nameDynatron
Model nameK2
Product typeFan & Heatsinks
Performance
Rotational speedAt Duty Cycle 20%: 1,000 RPM
At Duty Cycle 50%: 2,500 RPM
At Duty Cycle 100%: 4,000 RPM
Airflow rateAt Duty Cycle 20%: 6.0 CFM
At Duty Cycle 50%: 8.3 CFM
At Duty Cycle 100%: 11.9 CFM
Power
Power input connector4 Pin
Size & build
Fan size75 mm
Bearing design2 Ball
Cooler materialCopper
Fan mountingVertical
Heatsink dimensions82.6 × 81.0 × 27.8 mm
Shipping weight0.45 kg
Package size112 × 112 × 69 mm
Compatibility
Supported CPU socketsIntel LGA 1156 / 1155 / 1151
CPU cooler height limit28 mm
Environment & compliance
Operating noiseAt Duty Cycle 20%: 21.0 dBA
At Duty Cycle 50%: 37.8 dBA
At Duty Cycle 100%: 44.0 dBA

Questions about this item

Which socket version should I pick for my Intel Core i5-660?

The cooler supports LGA 1156, 1155 and 1151; your i5-660 uses LGA 1156, so this single model covers it.

What does the 44.0 dBA noise level mean when the fan runs at full speed?

At 100 % duty cycle the fan spins at 4000 RPM and produces 44.0 dBA, which is audible but typical for a compact 75 mm cooler under load.

How does the 4-pin connector control the fan speed range?

The 4-pin PWM header lets the motherboard vary the duty cycle from 20 % (1000 RPM, 6.0 CFM, 21.0 dBA) up to 100 % (4000 RPM, 11.9 CFM, 44.0 dBA).

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