They idle at pretty low wattages, and since the bulk of the TDP is rated for raster workloads you usually won't see them running at full-power on compute workloads.
My 300w 3070ti doesn't really exceed 100w during inference workloads. Boot up a 1440p video game and it's a different story altogether, but for inference and transcoding those 3060s are some of the most power efficient options on the consumer market.
