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Joined: Fri May 25, 2007 8:03 pm
Location: Croatia

CRS354-48G-4S+2Q+RM loudness

Wed Oct 07, 2020 8:26 am

Hello, i put CRS354-48G-4S+2Q+RM into classroom and had complaints about it being too loud. It was running long-term version of RouterOS and its fans were spinning at 8k RPM.

I made following adjustments:
  • Upgraded RouterOS from long-term to stable & updated Firmware to match
  • Reduced CPU clock from 650 MHz to 550 MHz
  • Disabled all SFP interfaces

Now the fans are running between 0 or 4k RPM in the following pattern (pink is CPU temp [56-61], blue is FAN rotation speed [0-4000]):

Not sure if those constant turning off and on wont break them in the long run. What are your experiences with this device and temperature/loudness?
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