With mining rewards shrinking amongst the crypto scene.. I wonder which country is the most cost efficient to mine crypto..
Between energy costs, sourcing components and building mining rig(s), temperature regulation, and storage space etc.. Which country do you think has the best potential?
What do you mean by building mining rigs: gpus?
China is the cheapest place to mine an asic directly to btc. Simply besause you can get asic mining gear cheaper then anywhere else.
GPU mining is really hard to answer.
But probably China again with an eight card gpu rig like this one.
https://www.alibaba.com/product-detail/Cheap-Price-Graphics-Card-Miner-GPU_62453167233.html?is a nice base to build.