this post was submitted on 27 Sep 2023
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75
Microsoft just improved dGPU performance on Windows 11 laptops (CASO) (devblogs.microsoft.com)
submitted 2 years ago* (last edited 2 years ago) by AceBonobo@lemmy.world to c/technology@lemmy.world
8 comments fedilink hide all child comments
 

"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).

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[–] radix@lemmy.world 6 points 2 years ago (1 children)

Original source

[–] AceBonobo@lemmy.world 2 points 2 years ago

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

[–] someguy3@lemmy.ca 6 points 2 years ago* (last edited 2 years ago) (2 children)

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?

[–] AceBonobo@lemmy.world 3 points 2 years ago

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

[–] Flipper@feddit.de 3 points 2 years 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.

[–] AceBonobo@lemmy.world 3 points 2 years ago* (last edited 2 years 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

[–] Kangie@lemmy.srcfiles.zip 2 points 2 years ago

Huh, sounds like PRIME render offload with the serial numbers filed off.

[–] Poe@lemmy.world 2 points 2 years ago

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