Bitmain Antminer S21+ Hyd (338Th)은(는) Bitmain의 SHA-256 알고리즘용 ASIC 채굴기로, 5,070 W에서 338 TH/s의 성능을 냅니다. 2025년 8월에 출시되었습니다. 효율 15.0 J/TH로, 저희가 추적하는 SHA-256 채굴기 중앙값(20.4 J/TH)보다 26% 더 효율적입니다. $0.036/kWh 기준 일일 수익으로 299대의 SHA-256 채굴기 중 54위이며, BTC 채굴로 하루 약 $7.93를 법니다. AsicProfit 최저가는 $2,099입니다. 현재 수치로는 약 265일 만에 본전을 찾습니다. 수냉(hydro) 방식이라 팬 대신 냉각 루프와 드라이 쿨러가 필요합니다.
질문과 답변 6
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Mikkel J. · 2026년 10월 19일 · 다른 버전에 대해
What is the difference between the S21+ air versions and the S21+ Hyd versions on this page?
AsicProfit SupportAsicProfit · 2026년 10월 20일
They are different machines. The air-cooled S21+ runs on single-phase 220 to 277 V with fans. The S21+ Hyd is water cooled and needs a three-phase 380 to 415 V supply, a coolant loop with 8 to 10 L/min of flow, and a dry cooler or similar heat exchanger. In return the Hyd gives much more hashrate per unit, and Bitmain rates the 358 TH/s Hyd at 15 J/TH. The numbers in each version name are the rated hashrate bins.
Andrus T. · 2026년 10월 14일 · 다른 버전에 대해
What water do I put in the S21+ Hyd loop? Can I just use tap water?
AsicProfit SupportAsicProfit · 2026년 10월 14일
Do not use tap water. Bitmain lists antifreeze, pure water or deionized water as working coolants, each with its own pH window: antifreeze 7.0 to 9.0, pure water 6.5 to 7.5, deionized water 8.5 to 9.5. Keep the inlet between 20 and 50 C, flow at 8 to 10 L/min and pressure at or below 3.5 bar. Where frost is possible, Bitmain says to use antifreeze rather than pure water.
Pablo G. · 2026년 10월 6일 · 다른 버전에 대해
My S21+ mines for a few minutes then stops and shows a board error. Is it dead?
AsicProfit SupportAsicProfit · 2026년 10월 6일
Not necessarily. Owners on Bitcointalk report this with S21+ units and often trace it to one hashboard, a loose data or power connection, or damage from rough shipping. Test one board at a time: power down, disconnect one board's data cable and power, and see whether the rest run. Check the kernel log for chip counts on each chain. If the unit is still under warranty, contact the seller before opening it.
Chris E. · 2026년 9월 30일 · 다른 버전에 대해
What warranty comes with an S21+? I'm not buying straight from Bitmain.
AsicProfit SupportAsicProfit · 2026년 9월 30일
Bitmain gives 365 days from the shipping date on the S21+ and S21+ Hyd, but only to the original buyer who bought directly from Bitmain. If you buy from a reseller, the reseller is responsible for the warranty, so ask them for the terms in writing before paying. Running the miner outside Bitmain's specified conditions, or changing settings without approval, can void cover.
Tomas K. · 2026년 9월 29일 · 다른 버전에 대해
how loud is the S21+ really? thinking of putting one in my garage
AsicProfit SupportAsicProfit · 2026년 9월 29일
Bitmain rates the air-cooled S21+ at 76 dBA at full fan speed, which is about as loud as a busy vacuum cleaner and runs around the clock. A detached garage or outbuilding works for many owners, but it is too loud for living space. Owners on forums say enclosures and ducting can take some of the edge off, but every enclosure still has to move a lot of air, so heat and airflow must come first.
Jan D. · 2026년 9월 15일 · 다른 버전에 대해
Can I plug the air-cooled S21+ into a normal wall socket, or do I need something special?
AsicProfit SupportAsicProfit · 2026년 9월 16일
You need a 220 to 277 V single-phase supply. Bitmain lists a maximum input current of 20 A for the 216 TH/s unit, so plan a dedicated circuit sized for it rather than a shared household socket. The machine ships with a C20 power cord. A 110 to 120 V outlet will not work, and Bitmain warns that the wrong input voltage can damage the unit. Have an electrician check the circuit, breaker and plug before you switch it on.
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