AnsweredAssumed Answered

r9 290 wattman disables p-states on voltage modification

Question asked by tomee09 on Jan 7, 2017
Latest reply on Jan 8, 2017 by tomee09

Wattman is having some very weird behaviour with my R9 290 Tri-X...


When I alter the voltage for any of the 7 P-states the card will down-clock to the P-state below the lowest voltage-altered P-state.


As an example: I lowered the voltage for P-state 7 (1000MHz) from 1250mV to 1230mV. During game play at 100% GPU load, the GPU only reaches p-state 6 (990MHz). If I then alter the voltage for P-state 1 (485MHz) from 1181mV to 1180mV the card will default to the clockspeed for P-state 0 (300MHz) and never increase above this no matter the GPU load.


This behaviour is the same on both the 16.12.1 and 16.12.2 drivers, with 3rd party overclocking utilities uninstalled. I have installed the AMD drivers following different combinations of the Guru3D Display Driver Uninstaller (DDU) programme, normal driver upgrades, and AMD clean driver instillation.


Any suggestions?





  • AMD Graphics Card
    • AMD R9 290 Tri-X OC
  • Desktop or Laptop System
    • Desktop
  • Operating System
    • Windows 10 64bit
  • Driver version installed
    • 16.12.1 / 16.12.2
  • Display Devices
    • Crossover 27" 1440p 60Hz DVI-D
  • Motherboard
    • Gigabyte Z77 DS3H
    • i7 3770K
  • Power Supply Unit  Make, Model & Wattage
    • OCZ ZT 650W 80+ Bronze
  • RAM
    • 2 x 8Gb 1600MHz


edit: PC details