Bitmain Antminer S21e Hyd (332Th)

Hashrate 332.0 TH/s Power 5,644 W Efficiency 17.0 J/TH

Bitdeer SealMiner A2 Hyd

Hashrate 446.0 TH/s Power 7,360 W Efficiency 16.5 J/TH

Bitmain Antminer S21e Hyd (332Th) vs Bitdeer SealMiner A2 Hyd

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

Specifications Comparison

Bitmain Antminer S21e Hyd (332Th)	Specification	Bitdeer SealMiner A2 Hyd
332.0 TH/s	Hashrate	446.0 TH/s
5,644 W	Power Consumption	7,360 W
17.0 J/TH	Efficiency	16.5 J/TH
55 dB	Noise Level	50 dB
12.8 kg	Weight	20.5 kg
19,257 BTU/hr	BTU Output	25,112 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 S21e Hyd (332Th)

Daily Revenue 0.00015278 BTC $12.08

Daily Electricity -$13.55

Daily Profit -$1.47

Monthly -$44.04

Yearly -$535.87

Bitdeer SealMiner A2 Hyd

Daily Revenue 0.00020524 BTC $16.22

Daily Electricity -$17.66

Daily Profit -$1.44

Monthly -$43.18

Yearly -$525.40

Based on BTC price of $79,051 and current network difficulty as of May 15, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Bitdeer SealMiner A2 Hyd wins on 3 of 5 factors (efficiency, hashrate, noise level). Where it pulls away hardest is 34% more hashrate (332 vs 446 TH/s). The Bitmain Antminer S21e Hyd (332Th) holds the edge in power consumption and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.

Winner: Bitdeer SealMiner A2 Hyd — wins on 3 of 5 factors

Spec Deltas

Stripped to the numbers, this is how far apart the Bitmain Antminer S21e Hyd (332Th) and Bitdeer SealMiner A2 Hyd sit on each measurable spec:

Bitdeer SealMiner A2 Hyd 34% more hashrate (332 vs 446 TH/s)
Bitmain Antminer S21e Hyd (332Th) 23% better power draw (5,644 vs 7,360 W)
Bitdeer SealMiner A2 Hyd 3% better efficiency (17.0 vs 16.5 J/TH)
Bitdeer SealMiner A2 Hyd 9% better noise (55.0 vs 50.0 dB)
Bitmain Antminer S21e Hyd (332Th) 38% better weight (12.8 vs 20.5 kg)
Bitdeer SealMiner A2 Hyd 30% more heat output (19,257 vs 25,112 BTU/hr)

Cost & ROI Over Time

A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.

Bitmain Antminer S21e Hyd (332Th)	Metric	Bitdeer SealMiner A2 Hyd
$1,799	Upfront cost (MSRP)	$6,150
-$1.47	Daily net profit	-$1.44
-$2,335	Net after 1 year	-$6,675
-$2,871	Net after 2 years	-$7,201
-$3,407	Net after 3 years	-$7,726
Does not pay back at current rates (negative daily profit)	Payback period	Does not pay back at current rates (negative daily profit)

Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.

Best For...

Best for Profitability

Tie

Both miners produce similar daily profit.

Best for Home Mining

Tie

Both miners are equally suitable for home use.

Best for Efficiency

Bitdeer SealMiner A2 Hyd

16.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Bitmain Antminer S21e Hyd (332Th) vs Bitdeer SealMiner A2 Hyd: which one earns more per day?

At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 Hyd is more profitable at $-1.44/day compared to $-1.47/day for the Bitmain Antminer S21e Hyd (332Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Bitmain Antminer S21e Hyd (332Th) vs Bitdeer SealMiner A2 Hyd: which runs at a lower noise level?

The Bitdeer SealMiner A2 Hyd is quieter at 50 dB compared to the Bitmain Antminer S21e Hyd (332Th) at 55 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Bitmain Antminer S21e Hyd (332Th) or Bitdeer SealMiner A2 Hyd?

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 S21e Hyd (332Th) and Bitdeer SealMiner A2 Hyd?

The Bitmain Antminer S21e Hyd (332Th) runs at 17.0 J/TH while the Bitdeer SealMiner A2 Hyd runs at 16.5 J/TH — a difference of 0.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 3% better efficiency (17.0 vs 16.5 J/TH).

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