Difference between revisions of "Airtop3 application note - reducing acoustic noise"
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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. | ||
+ | == Acoustic Noise Mitigation in BIOS == | ||
+ | # Reboot and press F11 (not DEL) to enter advanced BIOS settings | ||
+ | # Advanced --> Setup items availability: Development | ||
+ | # Advanced --> Power and performance --> CPU - Power Management Control --> CPU VR Settings --> Acoustic noise Settings: | ||
+ | ## Acoustic Noise Mitigation: Enabled | ||
+ | ## Pre Wake Time: 255 (use '+' key to change) | ||
+ | ## Ramp Up Time: 255 (use '+' key to change) | ||
+ | ## Ramp Down Time: 255 (use '+' key to change) | ||
+ | ## For each of the four sections below (IA VR Domain, GT VR Domain, SA VR Domain, VccIn VR Domain): | ||
+ | ### Disable Fast PKG C State Ramp for xx Domain: TRUE | ||
+ | ### Slow Slew Rate for GT Domain: Fast/16 | ||
+ | # Save and Exit | ||
− | + | == Disable C-states in BIOS == | |
− | + | # Reboot and press F11 (not DEL) to enter advanced BIOS settings | |
− | + | # Advanced --> Setup items availability: Development | |
− | + | # Advanced --> ''''Power & Performance'''' --> ''''CPU -Power Management Control'''' --> ''''C states'''': ''''Disabled'''' | |
− | + | # Save and Exit | |
− | + | ||
− | + | == Disable RC6 in BIOS == | |
− | + | # Reboot and press F11 (not DEL) to enter advanced BIOS settings | |
− | + | # Advanced --> Setup items availability: Development | |
− | + | # ''''Advanced'''' --> ''''Power & Performance'''' --> ''''GT - Power Management Control'''': | |
− | + | # ''''RC6(Render Standby)'''': ''''Disabled'''' | |
− | + | # ''''Disable Turbo GT frequency'''': ''''Enabled'''' | |
− | + | # Save and Exit | |
− | + | ||
− | + | ||
− | + | ||
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[[category: Airtop3]] | [[category: Airtop3]] | ||
[[category: Application notes]] | [[category: Application notes]] |
Revision as of 12:46, 4 November 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.
Acoustic Noise Mitigation in BIOS
- Reboot and press F11 (not DEL) to enter advanced BIOS settings
- Advanced --> Setup items availability: Development
- Advanced --> Power and performance --> CPU - Power Management Control --> CPU VR Settings --> Acoustic noise Settings:
- Acoustic Noise Mitigation: Enabled
- Pre Wake Time: 255 (use '+' key to change)
- Ramp Up Time: 255 (use '+' key to change)
- Ramp Down Time: 255 (use '+' key to change)
- For each of the four sections below (IA VR Domain, GT VR Domain, SA VR Domain, VccIn VR Domain):
- Disable Fast PKG C State Ramp for xx Domain: TRUE
- Slow Slew Rate for GT Domain: Fast/16
- Save and Exit
Disable C-states in BIOS
- Reboot and press F11 (not DEL) to enter advanced BIOS settings
- Advanced --> Setup items availability: Development
- Advanced --> 'Power & Performance' --> 'CPU -Power Management Control' --> 'C states': 'Disabled'
- Save and Exit
Disable RC6 in BIOS
- Reboot and press F11 (not DEL) to enter advanced BIOS settings
- Advanced --> Setup items availability: Development
- 'Advanced' --> 'Power & Performance' --> 'GT - Power Management Control':
- 'RC6(Render Standby)': 'Disabled'
- 'Disable Turbo GT frequency': 'Enabled'
- Save and Exit