Linux 6.14 Preps UHBR For Intel Panther Lake, Lower Alchemist GPU Power Use With Whitelisted CPUs

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  • cutterjohn
    Senior Member
    • Mar 2009
    • 333

    #11
    I think Intel might be do some weird offloading to iGPU on Intel CPUs that have Xe based iGPUs, and likely shutting down alchemist cards... as IIRC they were also claiming some slight perf increase if you had one of those Intel CPUs.... however IIRC there were anecdotal reports that if enabled it introduced microstuttering that was not perceptible w/it disabled, which further re-inforces the weird hybrid thing/idea/wag...

    on a 7900X my a770 would idle 6-8W (1 2400p, 1 1080p monitor. windows 10/11) according to hwinfo at least and Intel's own little panel thing...

    ...no idea what its doing under linux... several months ago there were no hooks for most card data, and I haven't bothered to check again since then... best I could do would be wall power, but then Id need to go back to windows and hopefully have similar conditions then compare wall power totals... with a WAG that the difference is the dGPU....

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    • Valeintin
      Junior Member
      • Dec 2024
      • 21

      #12
      Originally posted by cutterjohn View Post

      even current alchemist HDMI port is merely a DP->HDMI adapter internally... there is no native HDMI support, plus Ive found the builtin converter to be flakey, so have resorted to using my own DP->HDMI converter...
      I dunno how HDMI works inside iGPU but it may also be DP to HDMI. VRR works natively though.

      inside Arrow Lake bigcore they do have hdmi 2.0, but that is not what iGPU does. https://videocardz.com/newz/leaked-d...hipset-details
      Last edited by Valeintin; 10 January 2025, 04:32 AM.

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