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Re:Nvidia announces mining GPUs, cuts the hash rate of RTX-3... by fuzxi on Thursday February 18, 2021 @10:40PM (#26189388)
I'm not buying that for a second, unless that calculation includes the power it took to mine the coin in the first place (which is not consumed by the transaction any more than cash changing hands consumes cloth and ink).
Re:Nvidia announces mining GPUs, cuts the hash rate of RTX-3... by patmcc on Thursday February 18, 2021 @11:37PM (#26189814)
How do you think transactions are verified? There's a limit to the number of transactions per block, and each block takes ~10 minutes to mine. So; ~2000 transactions/block, 600 seconds, 0.3 seconds/transaction. How much energy does the global bitcoin network use in 0.3 seconds?

About 700 KwH, far as I can tell. (Based on 76.87 terawatt hours annually in 2020, as an estimate for bitcoin). A house uses ~1000/month, ballpark.