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Payback is how long the bitcoin a device earns takes to add up to its price. It leaves out electricity, which buys the heat: compare earnings per kWh with your electricity price to see whether mining alone covers it. It uses the average of the last 3 months, to 12 Nov 2026: bitcoin at $79,558, 969 EH/s on the network and 3.15 BTC a block, less a 2% pool fee, for the unit the best price buys, running all day. It cuts the block subsidy in half at each halving, the next around Apr 2028, and otherwise assumes those carry on unchanged, which they won't. Income at today's difficulty and price is about 17% below that average. Hashrate usually rises, though miners that stop paying after a halving may switch off, which leaves more for the rest. How we work it out. "Never" means it doesn't earn back its price within 30 years: each halving cuts its income, so a device that's slow to start may never catch up.

Best marks the best number in a row among the devices you picked. Power has no best: more power means more heat, and a bigger bill.

Prices are the cheapest offer in stock or on pre-order; if there is none, the cheapest listed price, marked Out of stock. They are converted to your currency at ECB rates of 11 Nov 2026. Stores are checked on different days, most recently 12 Nov 2026. Trustpilot scores are for the store, not the device.

"Warms about" is our rule of thumb for a cold day: 150 W per m² in a draughty room to 50 W in a well-insulated one (how we estimate). Running costs assume full power, 24 hours a day, at today's difficulty and bitcoin price, as a pool would pay on average before fees. Solo miners usually earn nothing. These are estimates, not promises, and not financial advice.