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Compact copper base aluminium fin heatsink with 60 mm PWM fan

Dynatron

Dynatron K650 60 mm 2-ball bearing CPU cooler

SKU CH-89HF-AQ24W MPN K650

A 60 mm dual-ball-bearing cooler with copper base and aluminium fins, running 1400 RPM at low duty and 7000 RPM at full speed for LGA 1155 and 1156 CPUs

  • Fan size60 mm
  • Bearing design2 Ball
  • Rotational speedAt Duty Cycle 0 to 20%: 1,400 RPM At Duty Cycle 50%: 3,500 R
  • Airflow rateAt Duty Cycle 0 to 20%: 7.405 CFM At Duty Cycle 50%: 18.517
  • Operating noiseAt Duty Cycle 0 to 20%: 20.8 dBA At Duty Cycle 50%: 35.9 dBA
  • Power input connector4 Pin PWM
  • Quiet operation at 20.8 dBA during low-load duty cycle
  • High airflow up to 38.283 CFM at full 100% duty cycle
  • Durable double-ball bearing rated for continuous high-speed operation
  • Copper base with aluminium stacked fins improves heat transfer efficiency
  • 4-pin PWM connector enables precise speed control from 1400 to 7000 RPM

60 mm 2-ball bearing CPU cooler

The Dynatron K650 is a compact air cooler built around a 60 mm fan with a double-ball bearing. A copper base contacts the processor while stacked aluminium fins disperse heat. The unit mounts on a 4-pin PWM header so the motherboard can regulate speed automatically.

Builders servicing LGA 1155 or LGA 1156 sockets

This cooler fits the listed Intel Core i3, i5 and i7 models as well as Xeon 3400-series and Sandy Bridge Xeon parts named in the specifications. It is not suited for newer socket types, higher-TDP processors outside the supported list, or builds that require a larger fan for lower noise at equivalent airflow.

7000 RPM maximum fan speed

At full duty cycle the fan spins at 7000 RPM, delivering 38.283 CFM of airflow at 48.1 dBA. That single figure determines whether the thermal performance and acoustic profile match the target system. Lower duty cycles run at 1400 RPM and 3500 RPM with correspondingly reduced airflow and noise.

How it compares

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

Price $38.99
Pricier than about 84% of the 1,559 comparable items (median $19.99).
Fan size 60 mm
Lower than about 60% of the 812 comparable items (median 80 mm).

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Specifications

Product
Brand nameDynatron
Model nameK650
Product typeFan & Heatsinks
Performance
Rotational speedAt Duty Cycle 0 to 20%: 1,400 RPM
At Duty Cycle 50%: 3,500 RPM
At Duty Cycle 100%: 7,000 RPM
Airflow rateAt Duty Cycle 0 to 20%: 7.405 CFM
At Duty Cycle 50%: 18.517 CFM
At Duty Cycle 100%: 38.283 CFM
Power
Power input connector4 Pin PWM
Size & build
Fan size60 mm
Bearing design2 Ball
Cooler materialCopper Base with Aluminum Stacked Fin
Heatsink dimensions88.5 × 87.0 × 64.0 mm
Product weight460g
Shipping weight0.53 kg
Package size108 × 108 × 64 mm
Environment & compliance
Operating noiseAt Duty Cycle 0 to 20%: 20.8 dBA
At Duty Cycle 50%: 35.9 dBA
At Duty Cycle 100%: 48.1 dBA

Questions about this item

At 100 % duty cycle the fan hits 7000 RPM — will the 48.1 dBA noise level be the first limit I notice under sustained load?

At full 100 % duty cycle the 60 mm fan runs at 7000 RPM and produces 48.1 dBA, which is the highest acoustical level specified for this cooler.

Running at 100 % duty cycle all day, how much power does the 4-pin PWM fan draw and what noise should I expect?

At 100 % duty cycle the fan draws 5.4 W and emits 48.1 dBA; at 50 % it draws 1.2 W at 35.9 dBA, and at 0~20 % it draws 0.6 W at 20.8 dBA.

The cooler uses a 4-pin PWM connector — does my motherboard need a 4-pin CPU fan header to control it properly?

Yes, the 4-pin PWM lead (Pin1 black, Pin2 yellow, Pin3 green tachometer, Pin4 blue PWM) requires a standard 4-pin CPU fan header for full speed control.

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