https://wccftech.com/hundreds-of-nvidias-workstation-aimed-quadro-rtx-a4000-cards-ending-up-in-crypto-mining-rigs/

While the crypto mining craze is at an all-time low, shop owners in Vietnam are still building rigs based on NVIDIA's RTX workstation graphics cards.

With the Ethereum proof of stake on the horizon, crypto mining isn't as lucrative as it used to be however, there are other options or alternatives that miners are investing in right now such as Raven, CHR, etc. And since Vietnam has been a very popular crypto mining market, tech retailers are now investing in NVIDIA RTX workstation graphics cards for mining purposes.