Bitmain Antminer S21 Hyd 335 TH/s Hydro-Cooled ASIC Miner
Bitmain Antminer S21 Hyd 335 TH/s Hydro-Cooled ASIC Miner $4,900
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S19 xp 293th hydro with radiator
Bitmain Antminer S19 XP+ Hyd 293 TH/s Hydro-Cooled ASIC Miner with Radiator $1,990
Used Antminer S21+ Hydro 395T
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Bitmain Antminer S21+ Hyd 395 TH/s Hydro-Cooled ASIC Miner

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$4,450

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  • Order Processing Time

Orders processed within 2 days

1-2 Days

Free

  • FedEx Ground

FedEx Ground, delivers to your address

2-3 Days

Free

  • DHL Express

Worldwide via DHL Express will deliver to the specified address

7-9 Days

Free

  • Warranty 6 Months

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  • Free 90-Day returns

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Description

The Bitmain Antminer S21+ Hyd delivers 395 TH/s at 15.0 J/TH efficiency, sitting between the base S21 Hyd and the S21 XP Hyd in Bitmain’s hydro lineup. Strong hashrate, top-tier efficiency, and a lower price point than the XP variant make it a solid mid-tier pick for operators already running hydro infrastructure. This unit is used, bench-tested in our Portland warehouse to confirm full hashrate and hashboard condition before listing. Original power supply unit included.

This is a hydro-cooled unit and requires 3-phase 380V input power and a compatible cooling loop or immersion setup to operate. It is not a drop-in replacement for an air-cooled miner.

Specifications:

  • Hashrate: 395 TH/s
  • Power draw: approximately 5,925W
  • Efficiency: 15.0 J/TH
  • Algorithm: SHA-256
  • Power input: 3-phase, 200-240V AC
  • Cooling: Hydro (water-cooled)
  • Noise level: 50dB
  • Operating temperature: 5°C to 45°C
  • Dimensions: 410 x 170 x 209mm
  • Weight: approximately 12.85kg
  • Condition: Used, tested and graded, PSU included

Ships worldwide via DHL Express (1 to 3 business days) or FedEx Ground for domestic US orders. Backed by a 6-month warranty and a 90-day return window.