6900 XT for macOS and 4080 for windows?

Hey all,

I might have the opportunity to acquire some 14th Gen Intel parts at a big discount, but I was curious about how the disabled GPUs would behave in their respective operating systems.

In Windows, I can disable the 6900 XT via device manager and just run the 4080.

In macOS, I can use the config and an SSDT to stop the 4080 from appearing and just run the 6900 XT.

However, does that truly stop each GPU from using power when they are disabled in the opposite operating systems? I'd like to make sure that the power draw doesn't continue even though they are disabled. Any thoughts/suggestions? Thanks.