frbitten on Nostr: The most widely used, as it was the first to be created, is Bitmain. But today there ...

The most widely used, as it was the first to be created, is Bitmain. But today there are many options. The important thing is to always buy from the manufacturer's website and analyze costs.
A Bitcoin mining company has dozens of these devices, even if it has one, it will be very rare to discover a block, so it is important to be in a pool.
https://www.bitmain.com/