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Bitmain has just announced the release of their latest next-generation Antminer, the S21 Hydro. This mining machine is designed to mine the SHA-256 algorithm and can achieve a remarkable maximum hashrate of 335TH/s while consuming 5445W of power.



Brand Antminer S21 Hyd.
Model S21 Hyd.
Algorithm | Cryptocurrency SHA256 | BTC/BCH/BSV
Hash Rate 335TH/s ± 3%
Power on wall @25°C, Watt 5445w ± 5%
Power efficiency on wall @25°C, J/TH 16 ± 5%
Power Supply With PSU
Power supply AC Input voltage, Volt(1-1) 200~240
Power supply AC Input Frequency Range, Hz 47~63
Power supply AC Input current, Amp(1-2) 20(1-3)
Networking connection mode RJ45 Ethernet 10/100M
Miner Size (Length*Width*Height, with package),mm 570*316*430
Net weight, kg(2-2) 13.1
Gross weight, kg 15.4
Operation temperature,°C 0~40
Storage temperature,°C -20~70
Operation humidity(non-condensing) , RH 10~90%
Operation altitude, m(3-1) ≤2000
Warranty 180 days





Purchasing Guidelines

  • Customers can purchase up to 200 units.
  • If the hashrate of the delivered mining machine is lower than 300TH/s, BITMAIN will refund the difference according to $/T.
  • Full payment is required for the product.
  • BITMAIN will not entertain requests to cancel an order, refund an ordered amount, or change the ordered item(s) to different item(s) or different batch(es) after an order has been submitted.


Shipping Details

  • Shipments will be scheduled on a first-paid-first-ship basis for orders on which BITMAIN has received full payment.
  • Customers are responsible for any customs delays or returned shipments due to a lack of proper documentation. It is highly recommended to be aware of local customs clearance policies and to prepare all customs documentation ahead of time to avoid any customs clearance delays or unexpected costs.



  • A 180-day warranty is provided starting from the shipping date. BITMAIN will cover shipping costs when shipping a replacement unit within the warranty period.
  • The warranty only applies to the original purchaser who purchased the machine directly from BITMAIN. Once the miner is resold, warranty coverage becomes the responsibility of the reseller.
  • If the user fails to use the product according to the given instructions, specifications, and conditions provided, or changes the function settings of the unit without BITMAIN’s prior consent, BITMAIN will not be liable for any damage arising therefrom.
Weight 18 kg

335 TH/s @ 5445w



Mineable Coins

BTC/BCH etc.

Hash Rate

335 TH/s ± 5%

Power Consumption

5445w ± 5%


16 J/TH ± 5%


RJ45 Ethernet 10/100M


4 x fan


With PSU

Miner Size (Length * Width * Height, with package), mm

570 * 316 * 430

Net weight, kg




66 reviews for Antminer S21 Hyd Bitcoin Miner

  1. sd65f6sd5f5 (verified owner)

    Excellent! will order again

    220 products
  2. sh129951 (verified owner)

    good! recommended reseller!

    9 products
  3. aaronenlightenedd (verified owner)

    shipping fast, recommended seller!

    16 products
  4. mrkrejzi (verified owner)

    The delivery was very fast, and the product is exactly as in the picture. I really recommend it! 🙂

    304 products
  5. xcoin (verified owner)

    very helpful, recommended seller!

    1 product
  6. lolipops6699 (verified owner)


    18 products
  7. jdrabekscheer (verified owner)

    fast shipping and delivery, recommended reseller!

    1 product
  8. metin2salvatore (verified owner)

    best reseller, Thank you

    1 product
  9. babyjenkillz (verified owner)

    quick response, Recommend!

    7 products
  10. Angerfist2016 (verified owner)

    good reseller! thanks a lot

    4 products
  11. einrel.lernie (verified owner)

    responsive reseller, recommended reseller.

    1 product
  12. shir199m (verified owner)

    fast delivery thanks

    146 products
  13. dsg0dg (verified owner)

    best reseller. Strongly recommend!

    38 products
  14. jo60e1 (verified owner)

    good miner, recommended

    1 product
  15. aasd (verified owner)

    The delivery was very fast, and the product is exactly as in the picture. I really recommend it! 🙂

    19 products
  16. DDOS (verified owner)

    very good quality look the same on the picture .

    1 product
  17. y0ungboutiuqe (verified owner)

    shipping fast, recommended

    1 product
  18. eroz.nita12 (verified owner)

    Perfect communication, Recommend to all!

    1 product
  19. martimaison (verified owner)

    Good packaging, recommended reseller!

    1 product
  20. diane_brodie (verified owner)

    Perfect! Recommend

    328 products
  21. rebirthro07 (verified owner)

    Good packaging, recommended

    113 products
  22. MakatiR (verified owner)

    responsive reseller, recommended

    259 products
  23. youssouf30 (verified owner)

    Perfect communication, Strongly recommend!

    42 products
  24. KurtZouma (verified owner)

    professional, recommended reseller!

    25 products
  25. jamesgjersing (verified owner)

    will buy again

    539 products
  26. cantis (verified owner)

    Perfect communication, recommended seller!

    350 products
  27. iom (verified owner)

    Satisfied, thank you

    488 products
  28. ostrcula (verified owner)

    good communication, recommended

    412 products
  29. sf04sdf04s (verified owner)


    258 products
  30. har.d.w.orker.s.eo (verified owner)

    delivery fast, recommended seller.

    1 product
  31. epicgamer50055 (verified owner)

    Quick delivery, recommended reseller.

    53 products
  32. elroynahas (verified owner)

    Excellent, the order arrived very fast and in good condition, it is missing to test and I will upload additional comments

    1 product
  33. antravetr (verified owner)

    Fast delivery and good quality, thank you

    14 products
  34. rozad (verified owner)

    good! recommended reseller!

    1 product
  35. kiethtibor (verified owner)

    Nice and easy…

    225 products
  36. vutien48 (verified owner)

    fast shipment, recommended reseller!

    347 products
  37. blacksystem (verified owner)

    Great seller. The goods were bought bu. I’m happy with the purchase, I will buy more.

    192 products
  38. roziblue999 (verified owner)

    Great seller. Strongly recommend!

    1 product
  39. luca123luca123 (verified owner)

    fast! will buy again

    110 products
  40. guanadigital (verified owner)


    43 products
  41. danhkienxpe (verified owner)

    best reseller, thanks!

    8 products
  42. gweszac007 (verified owner)

    Goods quality, everything was perfectly packed. Thank you seller.

    97 products
  43. d65s4f6sd46f4 (verified owner)

    Good communication with the seller.

    50 products
  44. me (verified owner)

    fast! Recommend to all!

    250 products
  45. babaji7691815221 (verified owner)

    Second buy. Last time 3080 mining machine installation and shipping problems noted. This time, the seller Packaging, Shipping for you if lots of having thank thanx.

    1 product
  46. brano (verified owner)

    quick delivery…! good communication from the seller..! good article…!

    257 products
  47. g3805991 (verified owner)

    I love it,Great product and seller.

    20 products
  48. deno001 (verified owner)

    Quick delivery, will buy again

    7 products
  49. WebsiteWorth (verified owner)

    will order again

    148 products
  50. d0sfsdg1fd0 (verified owner)

    6 days shipping to Germany. Sellers very friendly. I can recommend! Thank you

    343 products
  51. renjie (verified owner)

    Good packaging, Recommend

    1 product
  52. coops01uk (verified owner)

    delivery fast, recommended seller!

    1 product
  53. bilal.him (verified owner)


    1 product
  54. sadfsadfdsf (verified owner)

    New, until checked

    309 products
  55. agentokis (verified owner)

    Quick delivery, Recommend

    263 products
  56. itlogicpro (verified owner)

    A regular client of this seller.

    117 products
  57. wstjeffe15 (verified owner)

    I love it,Great product and seller.

    421 products
  58. banks_tenisha (verified owner)

    responsive reseller

    252 products
  59. mehparjames (verified owner)

    fast shipping and delivery, Recommend

    4 products
  60. jamuor78g (verified owner)

    He arrived very quickly and works well. I’m satisfied with the article, although it had to be cleaned up, outside of it so far works well.

    214 products
  61. g041501dfg0 (verified owner)

    Great seller. thanks a lot

    15 products
  62. info (verified owner)

    fast delivery thanks

    95 products
  63. d0s3f0szd1f (verified owner)

    fast shipment, recommended

    26 products
  64. arodriguez (verified owner)

    fast shipping and delivery, recommended seller!

    503 products
  65. aaronenlightenedd (verified owner)

    perfect! Thank you

    541 products
  66. lalurizkirno (verified owner)

    It’s amazing, I’ve bought it in different stores, this item is the best price, this is my fourth one, Working perfectly already has more than 2 weeks, recommend,

    3 products

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