OneMiners★ Esiletõstetud✓ Kontrollitud müüjaPikendatud garantiiJärelmaksLaos, kiire tarneAntminer T21 - 233 TH/sMajutus nende juures alates $0.0364/kWh, $118 kuusSaadetakse riigist United States · kontrollitud 24 h tagasi
Meie tasuta vidina kalkulaator: iga tasuvusaeg sellel lehel põhineb sellel.
Tulu päevas
$8.52
Elekter päevas
−$3.87
Majutus päevas
—
Kasum päevas
$4.65
Tasuvus hinnaga $996
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Kasum ja tasuvus on hinnangud tänaste müntide hindade ja võrgu raskusastme põhjal, enne pooli tasusid, hostingut ja makse. Need muutuvad iga päev. See ei ole finantsnõustamine.
Edetabel kasutab algoritmi peamist münti (SHA-256 puhul BTC, Scrypti puhul LTC + DOGE): väikesed kõrvalahelad võivad täna maksta hashi kohta rohkem, kuid ei suuda palju räsikiirust vastu võtta.
Bitmain Antminer T21 (233Th) on Bitmain ASIC-kaevandaja algoritmile SHA-256: 233 TH/s võimsusel 4,427 W. Turule tuli: veebruar 2024. Selle tõhusus 19.0 J/TH on lähedal meie jälgitavate SHA-256 kaevandajate mediaanile (20.4 J/TH). Hinnaga $0.036/kWh on see päevakasumi järgi 108. kohal 299 SHA-256 kaevandaja seas ja teenib umbes $4.65 päevas, kaevandades BTC. Parim hind AsicProfitis on $996. Tänaste näitajatega tasub see end ära umbes 215 päevaga. Müratasemega 75 dB kuulub see kaevandusfarmi või majutuskeskusesse.
Küsimused ja vastused 6
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Yusuf D. · 26. okt 2026 · teise versiooni kohta
T21 shows warning J1:2 and power voltage read failed. What does it mean?
AsicProfit SupportAsicProfit · 27. okt 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. okt 2026 · teise versiooni kohta
Is the T21 three-phase? I only have single-phase 240V at home.
AsicProfit SupportAsicProfit · 24. okt 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. okt 2026 · teise versiooni kohta
can i just pull the plug on a T21 to switch it off
AsicProfit SupportAsicProfit · 18. okt 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. okt 2026 · teise versiooni kohta
Why is the T21 cheaper than the S21, and is it the better buy?
AsicProfit SupportAsicProfit · 15. okt 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. sept 2026 · teise versiooni kohta
My T21 keeps overheating in summer and some boards now show 0 of 108 chips. Hardware or cooling?
AsicProfit SupportAsicProfit · 1. okt 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. sept 2026 · teise versiooni kohta
How loud is the T21 and how much heat does it put out?
AsicProfit SupportAsicProfit · 28. sept 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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