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AMD RX 7000-series' high idle power draw finally appears to be fixed with the latest 23.12.1 drivers
(www.tomshardware.com)
this post was submitted on 06 Dec 2023
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Unless you use HDR....
I still experience 90W idle on the desktop if I enable HDR on my main 1440p75 monitor. 7900XTX.
It seems to be tied to the IO dies and memory speed. At normal idle both the GPU cores and memory I/O can clock down below 10mhz, but as soon as I turn HDR on, the memory becomes locked at a full 2450mhz and I get the high power draw.