OneMiners★ Izpostavljeno✓ Preverjen prodajalecPodaljšana garancijaPlačilo na obrokeNa zalogi, hitra dostavaAntminer T21 - 233 TH/sGostovanje pri njih od $0.0364/kWh, $118 na mesecPošilja iz: United States · preverjeno pred 24 h
Kalkulator iz našega brezplačnega pripomočka: po njem se računa vsako povračilo na tej strani.
Prihodek na dan
$8.52
Elektrika na dan
−$3.87
Gostovanje na dan
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Dobiček na dan
$4.65
Povračilo pri $996
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Dobiček in povračilo sta oceni na podlagi današnjih cen kovancev in težavnosti omrežja, pred provizijami poola, gostovanjem in davki. Spreminjata se vsak dan. To ni finančni nasvet.
Lestvice uporabljajo glavni kovanec algoritma (BTC za SHA-256, LTC + DOGE za Scrypt): majhne stranske verige danes morda plačajo več na hash, a ne morejo sprejeti veliko hashrata.
Bitmain Antminer T21 (233Th) je ASIC rudar podjetja Bitmain za algoritem SHA-256, s 233 TH/s pri 4,427 W. Datum izida: februar 2024. Njegova učinkovitost 19.0 J/TH je blizu mediane rudarjev SHA-256, ki jih spremljamo (20.4 J/TH). Pri $0.036/kWh je po dnevnem dobičku na 108. mestu od 299 rudarjev SHA-256 in zasluži približno $4.65 na dan z rudarjenjem BTC. Najboljša cena na AsicProfit je $996. Po današnjih podatkih bi se povrnil v približno 215 dneh. Pri 75 dB sodi v rudarski center ali gostovanje.
Vprašanja in odgovori 6
Vprašajte o tem rudarju. Preverjeni računi sprašujejo in odgovarjajo, prodajalci odgovarjajo v imenu trgovine, vsaka objava pa je pred prikazom preverjena.
Yusuf D. · 26. okt. 2026 · o drugi različici
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 · o drugi različici
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 · o drugi različici
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 · o drugi različici
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. sep. 2026 · o drugi različici
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. sep. 2026 · o drugi različici
How loud is the T21 and how much heat does it put out?
AsicProfit SupportAsicProfit · 28. sep. 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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