OneMiners★ Izcelts✓ Pārbaudīts pārdevējsPagarināta garantijaMaksājums pa daļāmNoliktavā, ātra piegādeAntminer T21 - 233 TH/sMitināšana pie viņiem no $0.0364/kWh, $118 mēnesīSūta no United States · pārbaudīts pirms 24 h
Mūsu bezmaksas logrīka kalkulators: pēc tā rēķināts katrs atmaksāšanās laiks šajā lapā.
Ienākumi dienā
$8.52
Elektrība dienā
−$3.87
Mitināšana dienā
—
Peļņa dienā
$4.65
Atmaksāšanās pie $996
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Peļņa un atmaksāšanās ir aplēses pēc šodienas monētu cenām un tīkla sarežģītības, pirms pūla maksām, hostinga un nodokļiem. Tās mainās katru dienu. Tas nav finanšu padoms.
Reitingi izmanto algoritma galveno monētu (BTC SHA-256, LTC + DOGE Scrypt): mazas blakus ķēdes šodien var maksāt vairāk par hešu, bet nespēj uzņemt daudz hešreita.
Bitmain Antminer T21 (233Th) ir Bitmain ASIC ieguvējs SHA-256 algoritmam: 233 TH/s pie 4,427 W. Izlaists: 2024. g. februāris. Tā efektivitāte 19.0 J/TH ir tuvu mūsu sekoto SHA-256 ieguvēju mediānai (20.4 J/TH). Pie $0.036/kWh tas pēc dienas peļņas ir 108. vietā no 299 SHA-256 ieguvējiem un nopelna ap $4.65 dienā, iegūstot BTC. Labākā cena AsicProfit ir $996. Pēc šodienas rādītājiem tas atmaksātos apmēram 215 dienās. Ar 75 dB tam vieta ir ieguves fermā vai hostinga centrā.
Jautājumi un atbildes 6
Jautājiet par šo ieguves iekārtu. Pārbaudīti konti jautā un atbild, pārdevēji atbild sava veikala vārdā, un katrs ieraksts tiek pārbaudīts pirms publicēšanas.
Yusuf D. · 2026. g. 26. okt. · par citu versiju
T21 shows warning J1:2 and power voltage read failed. What does it mean?
AsicProfit SupportAsicProfit · 2026. g. 27. okt.
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. · 2026. g. 22. okt. · par citu versiju
Is the T21 three-phase? I only have single-phase 240V at home.
AsicProfit SupportAsicProfit · 2026. g. 24. okt.
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. · 2026. g. 17. okt. · par citu versiju
can i just pull the plug on a T21 to switch it off
AsicProfit SupportAsicProfit · 2026. g. 18. okt.
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. · 2026. g. 15. okt. · par citu versiju
Why is the T21 cheaper than the S21, and is it the better buy?
AsicProfit SupportAsicProfit · 2026. g. 15. okt.
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. · 2026. g. 29. sept. · par citu versiju
My T21 keeps overheating in summer and some boards now show 0 of 108 chips. Hardware or cooling?
AsicProfit SupportAsicProfit · 2026. g. 1. okt.
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. · 2026. g. 28. sept. · par citu versiju
How loud is the T21 and how much heat does it put out?
AsicProfit SupportAsicProfit · 2026. g. 28. sept.
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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