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Does Iris Xe support DSC and 8K@60hz 4:4:4 resolution?


I'm trying to achieve 8K@60hz 4:4:4 chroma output with the setup below:

  • X1 Carbon 9th Gen with Core i7-1185G7 and Iris Xe graphics. Iris Xe specs claim that it supports one 8K@60hz display.
    • I'm running Intel Graphics Driver This driver version gets 8K (@60hz 4:2:0), but updating to the "latest" version kills 8K compatibility altogether.
  • USB-C to HDMI 2.1 adapter (Club 3D CAC-1586). Specs for this device claim that it also supports 8K@60hz 4:4:4 and DSC.
  • Samsung QN800A 8K TV. I know the QN800A can do 8K@60hz 4:4:4, as I can achieve this using a RTX 3060 Ti with native HDMI 2.1 output.

The thing is that I can only get 8K@60hz 4:2:0 chroma (not 4:4:4 chroma) or 8K@30hz 4:4:4. Both of these are half the bandwidth of full 8K@60hz 4:4:4, and the last one is the only one that requires DSC.

Does Iris Xe actually support full 8K@60hz 4:4:4? Does it support DSC at all?

Thanks in advance!

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