Catalogue
SHA-256Hydro cooledReleased Nov 2024#2 by 24h profit

Bitmain

Antminer S21E XP Hyd 3U

Rack-native 3U enterprise sled. 860 Th/s per slot, built for container density.

Hashrate

860.00 Th/s

Power draw

11.18 kW

Efficiency

13.00 W/Th

Profit / 24h

$35.71

Email about this unit

Priced per unit on request — pricing moves with batch, condition and freight destination.

SHA

Technical faceplate drawing generated from this unit's own specs — board count, port layout and vent density track the real configuration. Photography available on request.

The short version

The S21E XP Hyd is Bitmain’s answer to the datacenter rack rather than the mining shed. Three rack units, two hydraulic quick-connects, 11.18 kW drawn through a single busbar tap. It is the densest SHA-256 hashrate per rack unit we stock, which is why hosting operators keep buying it despite the 13 W/Th efficiency.

  • 3U rack form factor with front-facing quick disconnects
  • 11.18 kW single-phase or three-phase input options
  • Designed for 40–50 °C loop temperatures and heat reuse

Full specification

Manufacturer
Bitmain
Model
Antminer S21E XP Hyd 3U
Release
Nov 2024
Algorithm
SHA-256
Cooling
Hydro — direct liquid loop
Nameplate hashrate
860.00 Th/s
Power at the wall
11180 W
Efficiency
13.00 W/Th
Benchmark power price
$0.13/kWh
Electricity cost / 24h at benchmark
$34.88
Gross revenue / 24h
$35.71
Profit / 24h
$35.71
Data source
August 2026 dataset

Run the numbers

Break-even power price: $0.133/kWh

Gross / day

$35.00

Power / day

−$34.18

Net / day

$0.81

Net per month
$24.71
Net per year
$296.32
Margin on revenue
2.3%

Gross revenue is the catalogue figure for this unit. Net subtracts electricity at your rate only — pool fees, hosting and hardware amortisation are not included, and payouts move with network difficulty.

Where the money comes from

Best-paying SHA-256 targets over the last 24 hours.

Top coins — revenue

  • QUAISHA-256$35.71
  • PPCSHA-256$29.35
  • BTCSHA-256$29.14

Top coins — profit

  • QUAISHA-256$35.71
  • PPCSHA-256$29.35
  • BTCSHA-256$29.14

Switching targets is a firmware and pool-config change, not a hardware change. Most operators point at the top line and let a profit switcher handle the rest.

What a quote includes

  • Unit price at your order quantity
  • Lead time and current batch availability
  • Freight to your site, duties flagged separately
  • Warranty terms — new, refurbished or as-is
  • Payback estimate against your real power price

Comparable SHA-256 units

SHASHA-256$36.79/day

Bitdeer · May 2026

Sealminer A4 Ultra Hydro

Hashrate
886.00 Th/s
Power
8.37 kW
Efficiency
9.45 W/Th
Benchmark
$0.18/kWh

The heaviest hitter in the catalogue — 886 Th/s on a single hydro sled at 9.45 W/Th.

Top payouts / 24h

  • QUAI$36.79
  • PPC$30.15
  • BTC$30.02
Full spec
SHASHA-256$28.27/day

Bitdeer · May 2026

Sealminer A4 Pro Hydro

Hashrate
680.00 Th/s
Power
7.41 kW
Efficiency
10.90 W/Th
Benchmark
$0.16/kWh

Same A4 platform, softer power envelope. 680 Th/s at 7.4 kW suits retrofitted rooms.

Top payouts / 24h

  • QUAI$28.27
  • PPC$23.71
  • BTC$23.04
Full spec
SHASHA-256$27.44/day

Bitdeer · Sep 2025

Sealminer A3 Pro Hydro

Hashrate
660.00 Th/s
Power
8.25 kW
Efficiency
12.50 W/Th
Benchmark
$0.14/kWh

A proven 2025 workhorse at 660 Th/s. Widely deployed, so spares are everywhere.

Top payouts / 24h

  • QUAI$27.44
  • PPC$23.07
  • BTC$22.36
Full spec