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this post was submitted on 01 Oct 2023
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Yes, rx 7800 xt
My worry s that playing a 1080P video need 30 watts (assuming amdgpu_top is not wrong), I would like to move that workload to integrated GPU, which I enabled in BIOS.
Thank you for your answer, I can confirm by switching to VA-API it lowers my power usage by a lot (from 45 to 20~21 watts reported).
Through some more testing, I found out mesa related hardware acceleration package can cause these power surge, on Archlinux it includes
mesa-vdpauandlibva-mesa-driver.If I don't have these package installed, VLC reverts to libplacebo which doesn't seem to cause more power usage.