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BACO Power Savings Support Comes To AMD's Vega 12

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  • BACO Power Savings Support Comes To AMD's Vega 12

    Phoronix: BACO Power Savings Support Comes To AMD's Vega 12

    The latest addition to AMD's open-source Linux kernel driver is supporting BACO on Vega 12...

    http://www.phoronix.com/scan.php?pag...D-Vega-12-BACO

  • #2
    I still wonder what Vega 12 actually is and if we will see a product with this chip in the market at all. At least if Navi is still expected this summer.

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    • #3
      Originally posted by ms178 View Post
      I still wonder what Vega 12 actually is and if we will see a product with this chip in the market at all. At least if Navi is still expected this summer.
      Vega mobile in macbook pro 15" IIRC. Option of 20CU or 16CU.

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      • #4
        Originally posted by ms178 View Post
        I still wonder what Vega 12 actually is and if we will see a product with this chip in the market at all. At least if Navi is still expected this summer.
        Some Radeon Pro part according to techpowerup https://www.techpowerup.com/gpu-specs/amd-vega-12.g859

        I wonder if Vega 3/6/8/11.. also get baco support etc. I think usually only Vega 10 is mentioned..

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        • #5
          Originally posted by thxcv View Post
          Some Radeon Pro part according to techpowerup https://www.techpowerup.com/gpu-specs/amd-vega-12.g859

          I wonder if Vega 3/6/8/11.. also get baco support etc. I think usually only Vega 10 is mentioned..
          Power Consumption is one of the metrics were we buy a card today..
          There are also work todo in that regard in Rx480/580/590 cards..
          I hope they does, or any similar feature..

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          • #6
            Does anyone have measurements that compare power usage on Polaris and Vega between Windows 10 and Linux?

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            • #7
              Originally posted by Space Heater View Post
              Does anyone have measurements that compare power usage on Polaris and Vega between Windows 10 and Linux?
              I only have Iddle values, in Gnu/Linux
              After using the profile Power Saving:
              Saphire Nitro+ Rx580 4GB - around ~34 Watts
              Saphire Nitro+ Rx580 8GB - around ~32 watts

              All values in iddle,
              Without been attached to display, or doing any work
              Maybe with more recent drivers of AMDGPU this could change, also I don't know how much power the RGB leds on Rx580 comsume..

              Maybe someone that has Other OSes installed could provide some values

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              • #8
                Originally posted by Space Heater View Post
                Does anyone have measurements that compare power usage on Polaris and Vega between Windows 10 and Linux?
                I wrote a bit about it in this post.

                tl;dr version:

                RX570 4GB, measurements in idle
                • on Windows, latest Adrenaline drivers, card idled at 7.25W and could work fanless
                • on Linux, multiple kernels with AMDGPU, card idled at a minimum of 28W
                So from my experience, there is room for improvement on the AMDGPU side.
                I'm hopeful they will come.
                For now I returned the RX570. I'm still looking for and AMD card though.

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                • #9
                  Originally posted by czak View Post
                  [*]on Windows, latest Adrenaline drivers, card idled at 7.25W and could work fanless[*]on Linux, multiple kernels with AMDGPU, card idled at a minimum of 28W
                  So from my experience, there is room for improvement on the AMDGPU side.
                  I'm hopeful they will come.
                  For now I returned the RX570. I'm still looking for and AMD card though.
                  People need to realize that Linux is not a windows. Linux focus on stability while windows not. That is why many windows users are interested of Linux. Do not expect your 144Hz toys to work, Linux is for professionals who do not not play csgo but many other much more fun games, like the Rocket League that works with freesync. Games look pretty at 4K 60Hz and many people have no need for higher refresh rates.

                  P=U x I, when P is 28W and U is 12V then the current is 2,3A. The Rasperry Pi 3 and your mobile phone charger use the same amount of current. So 28W vs 7W with a desktop PC does not matter. You will burn your GPU card if you run it fanless. The ASUS Radeon RX 570 4GB Expedition OC card has a silent fan, I can not hear it at 1000 rpm.
                  Last edited by debianxfce; 02-21-2019, 06:36 AM.

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                  • #10
                    Note that the BACO support on Linux is not currently wired up to runtime PM for power savings. It's currently being used as an additional GPU reset mechanism. It could also be used for power savings but that work has not happened yet.

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