Difference between revisions of "Airtop3 application note - reducing acoustic noise"

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(Airtop3 is producing audible noise, can I reduce it?)   (change visibility)
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==General==
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* This application note applies to Airtop3.
 
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==Hardware==
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==Airtop3 is producing audible noise, can I reduce it?==
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* With the voltage changes, the capacitors vibrate from Piezoelectric forces causing them to make audible noise.
 
* With the voltage changes, the capacitors vibrate from Piezoelectric forces causing them to make audible noise.
 
* The main source for this noise are from the power circuits of both the CPU and internal GPU.
 
* The main source for this noise are from the power circuits of both the CPU and internal GPU.
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  - Go to ''''Advanced'''' tab -> ''''Setup items availability'''' (first item in Advanced tab) -> Choose ''''Development''''.
 
  - Go to ''''Advanced'''' tab -> ''''Setup items availability'''' (first item in Advanced tab) -> Choose ''''Development''''.
 
  - <span style="color:#ff0000">'''Caution''':</span> Now the full setup menu is open, including options that can impair the Airtop3 stability or functionality, and items that were not checked or don't work.
 
  - <span style="color:#ff0000">'''Caution''':</span> Now the full setup menu is open, including options that can impair the Airtop3 stability or functionality, and items that were not checked or don't work.
 
 
2. In 'Advanced' tab -> ''''Power & Performance'''' -> ''''CPU -Power Management Control'''' -> ''''C states'''' -> Choose ''''Disabled''''<br>
 
2. In 'Advanced' tab -> ''''Power & Performance'''' -> ''''CPU -Power Management Control'''' -> ''''C states'''' -> Choose ''''Disabled''''<br>
 
3. Back to the tabs menu (2x '''[Esc]''' button) -> ''''Save & Exit'''' tab -> ''''Save Changes And Exit'''' -> ''''Yes''''.
 
3. Back to the tabs menu (2x '''[Esc]''' button) -> ''''Save & Exit'''' tab -> ''''Save Changes And Exit'''' -> ''''Yes''''.
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<br><U>'''Note'''</U>: Disabling C-states may reduce power efficiency of the CPU
 
<br>
 
<br>
 
<br>
 
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  - ''''RC6(Render Standby)'''' -> ''''Disabled''''
 
  - ''''RC6(Render Standby)'''' -> ''''Disabled''''
 
  - ''''Disable Turbo GT frequency'''' -> ''''Enabled''''
 
  - ''''Disable Turbo GT frequency'''' -> ''''Enabled''''
3. Keeping the C-states disabled:
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3. Back to the tabs menu (2x ['''ESC'''] button) -> ''''Save & Exit'''' tab -> ''''Save Changes And Exit'''' -> ''''Yes''''.
- In ''''Advanced'''' tab -> ''''Power & Performance'''' -> ''''CPU -Power Management Control'''' -> ''''C states'''' -> Choose ''''Disabled''''
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<br><U>'''Note'''</U>: This configuration may impair the performance of the internal GPU meaning it will not pass it's base frequency.
<br>4. Back to the tabs menu (2x ['''ESC'''] button) -> ''''Save & Exit'''' tab -> ''''Save Changes And Exit'''' -> ''''Yes''''.
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==Software==
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[[category: Airtop3]]
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[[category: Application notes]]

Revision as of 12:31, 14 August 2019

  • This application note applies to Airtop3.
  • With the voltage changes, the capacitors vibrate from Piezoelectric forces causing them to make audible noise.
  • The main source for this noise are from the power circuits of both the CPU and internal GPU.
  • Disabling C-state should reduce noise from the CPU's power circuit, see below instructions:

1. Activate development setup items of the setup menu:

- While in splash screen, press [F11] (instead of Delete) in the keyboard.
- Go to 'Advanced' tab -> 'Setup items availability' (first item in Advanced tab) -> Choose 'Development'.
- Caution: Now the full setup menu is open, including options that can impair the Airtop3 stability or functionality, and items that were not checked or don't work.

2. In 'Advanced' tab -> 'Power & Performance' -> 'CPU -Power Management Control' -> 'C states' -> Choose 'Disabled'
3. Back to the tabs menu (2x [Esc] button) -> 'Save & Exit' tab -> 'Save Changes And Exit' -> 'Yes'.
Note: Disabling C-states may reduce power efficiency of the CPU

  • Using a Discrete GPU should naturally reduce the noise from the internal GPU power circuit but there's also additional configurations that can be done from the development setup menu that may help:

1. Enter the development setup menu:

- While in splash screen, press [F11]..
- Go to 'Advanced' tab -> 'Setup items availability' -> Choose 'Development'.

2. In 'Advanced' tab -> 'Power & Performance' -> 'GT - Power Management Control' -> Change the two options below:

- 'RC6(Render Standby)' -> 'Disabled'
- 'Disable Turbo GT frequency' -> 'Enabled'

3. Back to the tabs menu (2x [ESC] button) -> 'Save & Exit' tab -> 'Save Changes And Exit' -> 'Yes'.
Note: This configuration may impair the performance of the internal GPU meaning it will not pass it's base frequency.