GenAI usage is a speculative at the moment, but then I used to plan data centers for a living and what I see going into the DC halls is consistent with these estimates.
The question is mostly if the current hype turns into a business, or if it implodes the way NFTs did – let's hope for the planet that it's a hype and is gone in a few years time.
@vladh
Desktop machines use around 25W under full power (Mac mini M2pro running LLM inference)
Laptops use 5W (Mac) to 20W (Lenovo Yoga with discrete Nvidia)
Steam box uses 400W under full load, 70W idle (Ryzen, 4070Ti) but these are rare and off most of the time.
They may be more that DC machines.
But most people run on battery and no fans, that gives them 1W power budget sustained, and a TDP of 5W.
It is useful to design for long battery runtime but it has no ecological impact.