Your comment only criticized the unit. I was only talking about the unit. Why are you changing the subject? Obviously the number is wrong.

Are you new to Lemmy? It’s pedants all the way down.

The unit is correct. You can think about tits for as long as you want, and the human brain uses less power while doing so. Here’s some improved wording:

The human brain uses 12W while it thinks about tities whereas AI doing the same thing uses 2.7 GW.

The major change was from “to” to “while”, and I would argue that those words can actually mean the same thing:

“A person uses 100W to ride a bicycle” means the same thing as "A person uses 100 watts while riding a bicycle.

So, I would conclude that the meme is fine.