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Silver aluminum heatsink with embedded heatpipe and black 80mm PWM fan vertical mount

Dynatron

Dynatron B11 CPU cooler LGA 3647 80mm PWM 205W

SKU CH-8MNT-0ENB0 MPN B11

An 80 mm PWM fan and aluminium heatsink with embedded heatpipe cool Intel LGA 3647 CPUs up to 205 W in 3U servers

  • TypeFan & Heatsinks
  • Fan Size80mm
  • CPU Socket CompatibilityIntel LGA 3647
  • Bearing Type2 Ball Bearing
  • RPMAt Duty Cycle 20%: 1300 +/- 200 RPM At Duty Cycle 50%: 2300
  • Air FlowAt Duty Cycle 20%: 12.5 CFM At Duty Cycle 50%: 28.8 CFM At D
  • Cools up to 205 W TDP with aluminium heatsink and embedded heatpipe
  • 80 mm PWM fan delivers 50.0 CFM at full speed
  • Quiet 16 dBA at low duty cycle for near-silent idle
  • Dual ball bearing ensures long-life operation in 3U servers
  • 110 mm tall design fits narrow ILM LGA 3647 sockets

Server CPU cooler for LGA 3647 sockets

The Dynatron B11 is an aluminium heatsink with an embedded heatpipe and an 80 mm PWM fan, designed for Intel LGA 3647 narrow ILM processors in 3U and taller server chassis. It supports CPU thermal design power up to 205 W and fits within a 110 mm height limit.

8025 axial PWM fan with 2 ball bearing

The bundled 80x80x25 mm fan runs on a 12 V four pin connector providing tachometer feedback and PWM control. Speed ranges from 1300 RPM at 20 % duty cycle to 4000 RPM at 100 %, delivering airflow from 12.5 CFM to 50.0 CFM and static pressure from 0.5 mm H2O to 7.8 mm H2O. Acoustic output spans 16 dBA to 42.2 dBA across the same range.

3U form factor constrains expansion

Maximum cooler height of 110 mm restricts use to 3U or larger rackmount enclosures; it will not fit in 1U or 2U systems. The vertical fan mounting and 600 g weight require secure retention on the narrow ILM. Buyers needing lower profile coolers for 1U or 2U servers cannot use this model.

Puntos fuertes

  • Cools up to 205 W TDP with aluminium heatsink and embedded heatpipe
  • 80 mm PWM fan delivers 50.0 CFM at full speed
  • Quiet 16 dBA at low duty cycle for near-silent idle
  • Dual ball bearing ensures long-life operation in 3U servers
  • 110 mm tall design fits narrow ILM LGA 3647 sockets

Especificaciones

BrandDynatron
ModelB11
TypeFan & Heatsinks
Fan Size80mm
CPU Socket CompatibilityIntel LGA 3647
Bearing Type2 Ball Bearing
RPMAt Duty Cycle 20%: 1300 +/- 200 RPM
At Duty Cycle 50%: 2300 +/- 10% RPM
At Duty Cycle 100%: 4000 +/- 10% RPM
Air FlowAt Duty Cycle 20%: 12.5 CFM
At Duty Cycle 50%: 28.8 CFM
At Duty Cycle 100%: 50.0 CFM
Noise LevelAt Duty Cycle 20%: 16 dBA
At Duty Cycle 50%: 30.2 dBA
At Duty Cycle 100%: 42.2 dBA
Power ConnectorPin1- (-)
Pin2- (+)
Pin3- (Tachometer/Signal output)
Pin4- (PWM)
Heatsink MaterialAluminum Heatsink with Heatpipe Embedded
Fan Mounting Types to HeatsinkVertical
Max CPU Cooler Height110 mm
Fan Dimensions80.00 x 80.00 x 25.00 mm
Heatsink Dimensions108.00 x 80.00 x 110.00 mm
Weight600g
FeaturesSolution: 3U Server and Up
Rated Voltage: 12V
Power:
At Duty Cycle 20%: 0.96 W
At Duty Cycle 50%: 1.44 W
At Duty Cycle 100%: 4.8 W
Air Pressure:
At Duty Cycle 20%: 0.5 mm-H2O
At Duty Cycle 50%: 2.6 mm-H2O
At Duty Cycle 100%: 7.8 mm-H2O
8025 Axial PWM Fan for Heat Exhausting
Convenient Heat Sink Screw captive mounting
Thermal Grease Shin-Etsu 7762 Pre-printed
Support CPU power up to 205 Watts heat dissipation
Includes both Fabric and Non-Fabric Package Carriers
Peso de envío0.82 kg
Dimensiones del paquete163 × 155 × 109 mm

Preguntas sobre este artículo

Will the 2 ball bearing fan need replacement in a 3U server running continuously?

The 2 ball bearing fan is rated for continuous operation at up to 4000 RPM with a 12 V supply; bearing wear is the only moving-part maintenance expected over the cooler's service life

What thermal limit appears first when a 205 W CPU runs at full load in a 3U chassis?

The aluminium heatsink with embedded heatpipe is rated for 205 W; sustained loads at that level will hit the cooler's maximum dissipation capacity before any other limit

How loud and hot does the 80 mm PWM fan get at 100 % duty cycle during all-day operation?

At 100 % duty cycle the fan reaches 4000 RPM, 42.2 dBA noise, 4.8 W power draw and 7.8 mm-H2O static pressure while moving 50.0 CFM through the 110 mm tall heatsink

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