没那么大问题，挖矿不需要很多人，所以确实可能会有几年会gpu 供不应求。 不过我最推崇还是cpu挖，现在cpu挖矿的思路都是cache尺寸 和 核心数来让算法只能在cpu上效益最好。
cpu自带太多好处了：
1. 因为要分配到一定量cache的核心才能跑这个算法，所以不是所有核心都能被吃满，那就用冗余来干别的。
2. 用cpu挖了后 会有人用爱发电来维持网络安全，或处于某种原因（没有合法的交易所等）亏电换币。这个很重要，对一般人而言想绕过监管积累点财富，这是最保险的方式。
3. 现在手机的cpu其实也能挖，但发热太大了，主动散热游戏手机或加被动散热即可，这样的话可以在晚上闲置的时候让他自己运行。
4. 芯片是有体质的区别的，而这个体质会因为长期高温运行下而下降，导致不能长期维持在高频。这个特质导致在ASIC上会有明显的收益问题，只能变成电子垃圾。cpu和gpu还能给需求不那么强的用户继续用 （所以市场才会对矿卡那么担忧，不过矿卡最大的问题其实是在另外的sram芯片的老化速度上，sram成本很低）。
Some extra Pros:
1. like how currently BTC using clean energy to mine, with cpu mining average home solar energy can be better utilized. Especially for homes that doesn't have battery for storage. When you sell the energy to the grid, A. there are 5-7% lost during the transmission, B. the grid pays you lower rate
2. Smarter home is a trend, those computational power in the smart home hub or TV boxes should not be waisted. In fact, I think the EV's digital cockpit computational unit is the next best thing to laptops and PCs. They are qualified for long duration and well cooled. In fact, I think even excluding a proper laptop/PC, the combination of mining power on smartphone + other smart devices will create a way more decentralized network than ASICs.
3. Current ASIC mining still use a lot of cpus to run the consensus code; that is in current situation, BTC core only process transaction. If ordinals or other types of ways to increase BTC's capability. There will be way more cpu computation requirements. This is why cpu mining is great for this, the current good cpu mining algorithms' performance is bound to cache (which is the most decentralized way), so the cores doesn't get enough cache will be idled. In the future, these redundent could be a great computational power boost to the ever increasing L2s.
#[2]
Cpu = the most decentralized way for proof of work mining makes most sense to me, I think Satoshi original vision is like this too. Not only is that clearly stated in the white paper ("Proof-of-work is essentially one-CPU-one-vote"), but also that he/she/they didn't choose GPU/ASIC at that time when GPU and ASIC are already quite mature.
#BTC #ProofOfWork #Pow #RandomX
