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‘Thirsty’ ChatGPT uses four times more water than previously thought (www.thetimes.com)

submitted 18 hours ago by cyrano@lemmy.dbzer0.com to c/technology@lemmy.world

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Writing a 100-word email using ChatGPT (GPT-4, latest model) consumes 1 x 500ml bottle of water It uses 140Wh of energy, enough for 7 full charges of an iPhone Pro Max

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[–] Naz@sh.itjust.works 4 points 4 hours ago (1 children)

Datacenter LLM tranches are 7-8 H100s per user at full load which is around 4 kW per second.

Multiply that by generation time and you get your energy used. Say it takes 62 seconds to write an essay (a highly conservative figure).

That's 68.8 Wh, so you're right.

Source: I'm an AI enthusiast

[–] bandwidthcrisis@lemmy.world 5 points 3 hours ago (1 children)

Well that's of the same order of magnitude as the quoted figure. I was suggesting that it sounded vastly larger than it should be.

[–] Naz@sh.itjust.works 6 points 3 hours ago

They're probably factoring in cooling costs and a bunch of other overhead, I dunno