I have 4x 144Hz monitors (one of them is actually a 165Hz) running off a 3060ti and the GPU downclocks to 210/101 MHz when idle as long as they are all set to the same refresh rate.
I used to get high idle clocks and after i did a clean install of the driver it was still the same so i reinstalled over the top again and after the third time it fixed itself.
Key thing is to have all monitors running at the same refresh rate to keep the clocks down on idle. I have to set all of mine to 120Hz as streaming with OBS Studio @60Hz the monitors need to be at a multiple of 60 to keep the stuttering down, some users get away with it but its definitly an issues for many.
Edit.. 3 displays use DP cables and the other uses an HDMI cable.
Idle clock seems fine, its downclocking normally but for some reason it sits around 100w instead of what it should be on a single monitor (cant remember off top of my head). I have all mine set to 144hz, the only one i can't set is the stats panel which is a basic LCD screen through HDMI. All ports on the back of the gpu are populated. I've done a clean windows install and it still was the same, updated the bios on the gpu, still the same and reinstalled drivers. In the end i just left it as it is.
Same, 3 of mine are on DP's and the stats panel is on hdmi.
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