OneMiners★ In evidenza✓ Venditore verificatoGaranzia estesaPagamento a rateDisponibile, consegna rapidaAntminer T21 - 233 TH/sHosting da loro da $0.0364/kWh, $118 al meseSpedito da United States · verificato 24 h fa
Compass Mining Indiana 1Compass MiningMix di rete, Carbone, Gas naturale$0.079/kWh$255 al mese+$0.13 / giornosi ripaga in 7844 giorniVedi hosting
Washington hydroEndlessMiningWashingtonIdroelettrica45 MW$0.08/kWh$258 al mese+$0.02 / giornosi ripaga in 48045 giorniVedi hosting
Miningtech hosting NorwayMiningtechRinnovabili miste$0.08/kWh$258 al mese+$0.02 / giornosi ripaga in 48045 giorniVedi hosting
Simple Mining Site #1Simple MiningMix di rete, Eolica, Solare, Nucleare, Carbone, Gas naturale30 MW$0.08/kWh$258 al mese+$0.02 / giornosi ripaga in 48045 giorniVedi hosting
Coin Factory hosting - QuebecCoin Factory✓ VerificatoQuebec$0.08/kWh$258 al mese+$0.02 / giornosi ripaga in 48045 giorniVedi hosting
Il calcolatore del nostro widget gratuito: tutti i tempi di rientro di questa pagina si basano su di esso.
Ricavo al giorno
$8.52
Elettricità al giorno
−$3.87
Hosting al giorno
—
Profitto al giorno
$4.65
Rientro a $996
—
Profitto e rientro sono stime basate sui prezzi delle coin e sulla difficoltà di rete di oggi, prima di commissioni del pool, hosting e tasse. Cambiano ogni giorno. Non è una consulenza finanziaria.
Le classifiche usano la coin principale dell'algoritmo (BTC per SHA-256, LTC + DOGE per Scrypt): le piccole catene secondarie oggi possono pagare di più per hash, ma non possono assorbire molto hashrate.
Il Bitmain Antminer T21 (233Th) è un miner ASIC di Bitmain per l’algoritmo SHA-256, con 233 TH/s a 4,427 W. È uscito a febbraio 2024. La sua efficienza di 19.0 J/TH è vicina alla mediana dei miner SHA-256 che seguiamo (20.4 J/TH). A $0.036/kWh è al 108° posto su 299 miner SHA-256 per profitto giornaliero e rende circa $4.65 al giorno minando BTC. Il miglior prezzo su AsicProfit è $996. Con i dati di oggi si ripagherebbe in circa 215 giorni. Con 75 dB il suo posto è un sito di mining o un centro di hosting.
Domande e risposte 6
Fai una domanda su questo miner. Gli account verificati chiedono e rispondono, i venditori rispondono come negozio e ogni messaggio viene controllato prima di apparire.
Yusuf D. · 26 ott 2026 · su un'altra versione
T21 shows warning J1:2 and power voltage read failed. What does it mean?
AsicProfit SupportAsicProfit · 27 ott 2026
It points to the power side: the control board could not read the supply voltage, and the miner restarts. Measure each phase under load, not just at idle, and check the PDU sockets and cable terminations, since loose pins at the back of the socket are a known cause. If all three phases are healthy, the power supply is the next suspect. A unit under warranty should go back to Bitmain or an authorised repair centre.
Felix W. · 22 ott 2026 · su un'altra versione
Is the T21 three-phase? I only have single-phase 240V at home.
AsicProfit SupportAsicProfit · 24 ott 2026
Yes, the standard T21 ships for 380-415V three-phase input, which surprises many buyers because most Antminers in this class are single-phase. Owners confirm it needed electrical upgrades and three-phase PDUs. A few hobbyists run modified T21s on single-phase power supplies at reduced wattage, but that is a do-it-yourself conversion outside the warranty. Check your supply before you order.
Lucas O. · 17 ott 2026 · su un'altra versione
can i just pull the plug on a T21 to switch it off
AsicProfit SupportAsicProfit · 18 ott 2026
Not on the T21. An owner reported that its three-phase connector is not designed to be pulled under load, and if neutral breaks before the live pins it can damage the cable and power supply. Switch it off at the breaker first, then unplug. Frequent hard power cycling is also hard on solder joints, so fix the cause of any overheating rather than repeatedly cutting power.
Mark J. · 15 ott 2026 · su un'altra versione
Why is the T21 cheaper than the S21, and is it the better buy?
AsicProfit SupportAsicProfit · 15 ott 2026
The T21 does 190 TH/s at 19 J/TH, while the air-cooled S21 does 200 TH/s at 17.5 J/TH. You pay less up front but more electricity per terahash, so the T21's margin shrinks faster when difficulty rises or the Bitcoin price falls. It also needs three-phase power. With cheap three-phase electricity it can make sense; otherwise compare both in the calculator on this page at your power price.
Dmitri V. · 29 set 2026 · su un'altra versione
My T21 keeps overheating in summer and some boards now show 0 of 108 chips. Hardware or cooling?
AsicProfit SupportAsicProfit · 1 ott 2026
It can be both. Owners report T21s struggling in hot containers, with corner chips running much hotter than the rest, and boards that lose chips after a restart. Check fans and intake temperature, reseat the hashboard and control board cables, and test boards one at a time. Repasting the heatsinks has helped several owners. Faulty PDU socket pins that drop a phase can also cause odd chip errors. Underclocking through the hottest months is a common workaround.
David C. · 28 set 2026 · su un'altra versione
How loud is the T21 and how much heat does it put out?
AsicProfit SupportAsicProfit · 28 set 2026
It is listed at about 75 dB, which is not suitable for a living space. Nearly all of its roughly 3,610 W becomes heat, about 12,300 BTU per hour, so the room needs strong ventilation or ducting for the exhaust. The listed operating range is 5 to 45°C, but owners advise keeping intake air well below the top of that range for long life.
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