You are wrong.
Proof of work crypto currencies automatically adjust the mining difficulty so that blocks come on average every 10 minutes (or whatever time a particular chain has). Even if only a single graphics card was left difficulty would adjust down to 10 minutes.
The purpose of this "wasted" effort is to allow the network to synchronize without any central server doing it. Instead whoever gets the block defines the system state (as long as no other rules are broken, ie. miners cannot steal). If anyone could make a block there would be so many the network would be unstable.
What does this non sequitur have to do with the price of graphics cards trending with crypto? Nothing at all? Well, you sure showed me.
What does this non sequitur have to do with the price of graphics cards trending with crypto? Nothing at all?
Just explaining how it works. It is theoretically possibly for crypto demand to drive up the demand and price of graphics cards, but this doesn't mean that crypto in return are affected by graphics cards.
I say 'theoretically' because for years now most of the major cryptos have not even been mined with graphics cards, but specially constructed devices called ASIC mining chips or FPGA mining chips.
With this in mind usually graphics cards would only be used to mine new and niche cryptos or cryptos designed on purpose to be hard to make ASICS for (though ASICS are usually made even for those in the end I believe).
I guarantee no one is mining Bitcoin with graphics cards these days, not anyone even half serious at least.
The compute units on GPUs are second to none, at a commercially available level.
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