Bitmain Antminer S21 XP+ Hyd (500Th)

Hashrate 500.0 TH/s Power 5,500 W Efficiency 11.0 J/TH

Bitdeer SealMiner A3 Hydro

Hashrate 500.0 TH/s Power 6,750 W Efficiency 13.5 J/TH

Bitmain Antminer S21 XP+ Hyd (500Th) vs Bitdeer SealMiner A3 Hydro

Side-by-side specs, profitability, and home mining comparison.

Specifications Comparison

Bitmain Antminer S21 XP+ Hyd (500Th)	Specification	Bitdeer SealMiner A3 Hydro
500.0 TH/s	Hashrate	500.0 TH/s
5,500 W	Power Consumption	6,750 W
11.0 J/TH	Efficiency	13.5 J/TH
50 dB	Noise Level	50 dB
13.8 kg	Weight	20.5 kg
18,766 BTU/hr	BTU Output	23,031 BTU/hr
44/100	Home Mining Score	44/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Bitdeer

Profitability Comparison

Electricity Rate:

$/kWh

Bitmain Antminer S21 XP+ Hyd (500Th)

Daily Revenue 0.00023181 BTC $18.10

Daily Electricity -$13.20

Daily Profit $4.90

Monthly $147.11

Yearly $1,789.90

Bitdeer SealMiner A3 Hydro

Daily Revenue 0.00023181 BTC $18.10

Daily Electricity -$16.20

Daily Profit $1.90

Monthly $57.11

Yearly $694.90

Based on BTC price of $78,098 and current network difficulty as of Apr 26, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Bitmain Antminer S21 XP+ Hyd (500Th) wins on 2 of 3 factors (efficiency, power consumption). The Bitdeer SealMiner A3 Hydro holds the edge in price-performance. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.

Winner: Bitmain Antminer S21 XP+ Hyd (500Th) — wins on 2 of 3 factors

Best For...

Best for Profitability

Bitmain Antminer S21 XP+ Hyd (500Th)

$3.00/day higher profit at current rates.

Best for Home Mining

Tie

Both miners are equally suitable for home use.

Best for Efficiency

Bitmain Antminer S21 XP+ Hyd (500Th)

11.0 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer S21 XP+ Hyd (500Th) or Bitdeer SealMiner A3 Hydro more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP+ Hyd (500Th) is more profitable at $4.90/day compared to $1.90/day for the Bitdeer SealMiner A3 Hydro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer S21 XP+ Hyd (500Th) or Bitdeer SealMiner A3 Hydro?

Both miners have similar noise levels. Check the specs table above for exact decibel readings.

Which is better for home mining, the Bitmain Antminer S21 XP+ Hyd (500Th) or Bitdeer SealMiner A3 Hydro?

Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.

What is the efficiency difference between Bitmain Antminer S21 XP+ Hyd (500Th) and Bitdeer SealMiner A3 Hydro?

The Bitmain Antminer S21 XP+ Hyd (500Th) runs at 11.0 J/TH while the Bitdeer SealMiner A3 Hydro runs at 13.5 J/TH — a difference of 2.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs.

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