“In our tests, on a select set of popular PC games, we observed an average of ~16% FPS increase1 and ~27% display latency reduction1. In addition, CASO contributed to a 45% decrease in timeout detection and recovery events (TDRs)”

Cross Adapter Scan-Out (CASO) can improve the performance of hybrid laptops that have both an integrated GPU (iGPU) and a discrete GPU (dGPU) or external GPU (eGPU). CASO is a feature of DirectX that allows the dGPU/eGPU to directly display the rendered frames on the screen, bypassing the iGPU. This reduces the display latency and increases the FPS for gaming scenarios. CASO does not require any specialized hardware solutions like NVIDIA’s Advanced Optimus or AMD’s Smart Access Graphics (no mux switch needed), but it does require Windows 11 and compatible hardware (AMD 6000, Intel Iris, any nvidia dGPU).

  • BarqsHasBite
    link
    fedilink
    English
    6
    edit-2
    1 year ago

    I’ve not heard of both iGPU and dGPU being referred to as hydrid. I don’t get how it’s hybrid.

    any nvidia dGPU).

    No AMD GPU?

    • 520
      link
      fedilink
      51 year ago

      Usually, you’d only have one GPU working on a display. However many laptops come with the ability to leverage two GPUs on one display. On such setups, these typically involve the iGPU, which is weaker but less power hungry, and the dGPU, which is more powerful but comes at an additional power cost.

      Hybrid mode is when the iGPU is doing the typical GUI stuff and the dGPU kicks in for more GPU intense stuff like games.

    • @AceBonoboOP
      link
      English
      41 year ago

      They didn’t mention it but I assume the dGPUs that shipped with 6000 series CPUs are supported. Definitely need to confirm it.

    • @[email protected]
      link
      fedilink
      English
      31 year ago

      The Idea is, that the integrated CPU is a lot more efficient. So if you’re only browsing or having the desktop open, only the internal one is working, while the dGPU can be powered off completly, increasing battery life. But Games can still use the full power of a diskrete GPU.

    • @AceBonoboOP
      link
      English
      21 year ago

      Thanks, I tried to change the picture and must have deleted the link.

  • @AceBonoboOP
    link
    English
    4
    edit-2
    1 year ago

    Supported windows 11 versions:

    Windows (SV1) Build 22000.1817 or later Windows (SV2) Build 22621.1413 or later

    WDDM Driver Model:AMD 3.1 or later, Intel 3.0 or later

  • @Poe
    link
    English
    31 year ago

    Huh, that’s neat. Alleviates the need for MUX switch it seems.

      • rastilin
        link
        fedilink
        21 year ago

        Possibly. It also suggest you’d get all these benefits by just disabling one of the GPUs, because unless battery life is a concern for your gaming laptop the difference in power draw on the desktop will be fairly minor.