Noise reduction for development server

 

Parts for solution = high rise heat sink with fan on both cpu's

Parts for solution = replace noisy fans with quiet ones

 

 

 

 

Part No. D06T-12PS2 AJ

  • Nidec Beta SL DC FAN
  • 3wires
  • 60x60x25mm, DC12V, 0.25A
  • Ball Bearing middle Speed 4360RPM
  • Noise : 30dBA
  • Air flow : 36.0 m³/h
  • Operating Temperature : -10~+70C
  • Connector : Ampex 2510, 3pins, 2.54mm
  • 24AWG Wire, L=250mm

 

 

Acceptable noise levels:

Location Effects Leq (dBA) Time (hours) Time of day
Bedroom sleep disturbance, annoyance > 30 8 night
Living area annoyance, speech interference > 50 16 day
Outdoor living area moderate annoyance > 50 16 day
Outdoor living area serious annoyance > 55 16 day
Outdoor living area sleep disturbance, with open windows > 45 8 night
School classroom speech interference, communication disturbance > 35 8 day
Hospitals patient rooms sleep disturbance, communication interference > 30-35 8

day and night

 

Dell Gx620 noise levels for reference   – 

Declared Noise Emissions in accordance with ISO 9296
Service Level Sound Power
(LWAd, bels) (1 bel=10 decibels, re 10-12 Watts)
Sound Pressure Operator Position
(LpAm, decibels) (re 2×10-5 Pa)
Floppy Drive Accessing 4.5 36.3
Hard Drive Accessing 4.2 32.2
CD Drive Accessing 5.2 45.4
Idle 3.8 29.6

 

 

 


Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *