What to do with outdated bitcoin miners?

What to do with outdated bitcoin miners?

In the case of considering the cost of electricity, the life cycle of miners is generally about 3-5 years. That is to say, after 3-5 years, the mining performance of miners and the current currency price may not be enough to cover the electricity consumption. In such a case, the choice of the vast majority of miners can only be shut down. Since it is no longer possible to continue mining, where will these outdated miners go?

Whole miners resell

For miners who can only dig out electricity bills, for self-pay electricity users, there is no need to continue digging. At this time, if the miners are sold to free electricity users, it will be more cost-effective than dismantling the parts and selling the waste products. Because free electricity users are not sensitive to electricity bills, miners can continue to use their waste heat.
When selling outdated miners, you must break through your psychological barriers. After all, if you buy thousands of dollars, you may sell for only tens of dollars, and there is a considerable price difference. There is no profit for self-funded electric miners, and it isn't very sensible for miners to keep it in their hands. As long as the recycling price is higher than the price of dismantled garbage, it is cost-effective. It's better than holding it in your hand and selling garbage after a while.

Buck and frequency reduction

Although at the factory standard frequency, miners are already unprofitable for mining. However, each type of miner chip can work at various voltage frequencies. Therefore, different voltages and frequencies can get different speed-to-power ratios. The most famous one is Antminer.
However, many miners currently facing obsolescence do offer frequency adjustments. But unfortunately, the working voltage of miners cannot be adjusted in the control software. So if you reduce the operating frequency, the speed will drop, and the temperature will also drop. However, because the voltage has not dropped, the power consumption will still be reduced proportionally, so the speed and energy consumption ratio are still the same; using such a miner mining still only digs out electricity bills.
So how can we lower the voltage? Only the power supply part in the miner's circuit is hard-modified because the power supply part of the miner is digitally controlled DC-DC step-down. By adjusting the resistance value of the peripheral sampling resistor of the IC, the working voltage of the miner can be lowered. Under normal circumstances, only one or two chip resistors need to be replaced.

Dismantling and selling accessories

Although miners cannot be used for mining, the high-power power supplies of miners are reusable, and the price of buying new power supplies for miners is mostly around $200-300. Second-hand high-power power supplies can also be sold for tens of dollars, depending on the brand. If you buy a new miner, you can use it repeatedly as long as the power supply can be used universally. Some new miners do not have a power supply and need to buy them separately. Therefore, it is a better choice for old miners with a power supply.
In addition, the control board inside the miner can be brushed into the control board of other types of miners, and the chips of some miners can also be used universally and can also be used for later disassembly and recycling.