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Old RTX 3080 GPUs repurposed and modded for Chinese market as 20GB AI cards with blower-style cooling
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
The first ASIC came out in 2013 https://www.coindesk.com/tech/2020/04/26/the-rise-of-asics-a-step-by-step-history-of-bitcoin-mining/
It was more profitable to mine alts in 2014 already, like Litecoin