Bitmain Antminer S7-LN

Hashrate 2.7 TH/s Power 697 W Efficiency 258.2 J/TH

Bitdeer SealMiner A3 Air

Hashrate 260.0 TH/s Power 3,640 W Efficiency 14.0 J/TH

Bitmain Antminer S7-LN vs Bitdeer SealMiner A3 Air

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

Specifications Comparison

Bitmain Antminer S7-LN	Specification	Bitdeer SealMiner A3 Air
2.7 TH/s	Hashrate	260.0 TH/s
697 W	Power Consumption	3,640 W
258.2 J/TH	Efficiency	14.0 J/TH
—	Noise Level	75 dB
7,500.0 kg	Weight	15.5 kg
2,378 BTU/hr	BTU Output	12,420 BTU/hr
30/100	Home Mining Score	30/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Bitdeer

Profitability Comparison

Electricity Rate:

$/kWh

Bitmain Antminer S7-LN

Daily Revenue 0.00000124 BTC $0.10

Daily Electricity -$1.67

Daily Profit -$1.57

Monthly -$47.23

Yearly -$574.62

Bitdeer SealMiner A3 Air

Daily Revenue 0.00011965 BTC $9.48

Daily Electricity -$8.74

Daily Profit $0.75

Monthly $22.46

Yearly $273.23

Based on BTC price of $79,271 and current network difficulty as of May 15, 2026. Actual results vary.

Verdict

Our scoring model gives the nod to the Bitdeer SealMiner A3 Air, which leads on 3 of 4 weighted factors (efficiency, hashrate, noise level). The standout gap is 9530% more hashrate (2.7 vs 260.0 TH/s) in the Bitdeer SealMiner A3 Air's favour. That said, the Bitmain Antminer S7-LN isn't beaten everywhere — it still wins power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.

Winner: Bitdeer SealMiner A3 Air — wins on 3 of 4 factors

Spec Deltas

Here is every spec where the Bitmain Antminer S7-LN and Bitdeer SealMiner A3 Air actually differ, with the gap quantified:

Bitdeer SealMiner A3 Air 9530% more hashrate (2.7 vs 260.0 TH/s)
Bitmain Antminer S7-LN 81% better power draw (697 vs 3,640 W)
Bitdeer SealMiner A3 Air 95% better efficiency (258.2 vs 14.0 J/TH)
Bitdeer SealMiner A3 Air 100% better weight (7,500.0 vs 15.5 kg)
Bitdeer SealMiner A3 Air 422% more heat output (2,378 vs 12,420 BTU/hr)

Cost & ROI Over Time

Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.

Bitmain Antminer S7-LN	Metric	Bitdeer SealMiner A3 Air
—	Upfront cost (MSRP)	$3,900
-$1.57	Daily net profit	$0.75
-$575	Net after 1 year	-$3,627
-$1,149	Net after 2 years	-$3,354
-$1,724	Net after 3 years	-$3,080
—	Payback period	Takes ~14.3 years to pay back at current rates

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

Bitdeer SealMiner A3 Air

$2.32/day higher profit at current rates.

Best for Home Mining

Tie

Both miners are equally suitable for home use.

Best for Efficiency

Bitdeer SealMiner A3 Air

14.0 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Bitmain Antminer S7-LN or Bitdeer SealMiner A3 Air more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A3 Air is more profitable at $0.75/day compared to $-1.57/day for the Bitmain Antminer S7-LN. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Bitmain Antminer S7-LN or Bitdeer SealMiner A3 Air?

The Bitdeer SealMiner A3 Air is quieter at 75 dB compared to the Bitmain Antminer S7-LN at 0 dB. For home mining, lower noise levels make a significant difference in livability.

Which is better for home mining, the Bitmain Antminer S7-LN or Bitdeer SealMiner A3 Air?

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 S7-LN and Bitdeer SealMiner A3 Air?

The Bitmain Antminer S7-LN runs at 258.2 J/TH while the Bitdeer SealMiner A3 Air runs at 14.0 J/TH — a difference of 244.2 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 95% better efficiency (258.2 vs 14.0 J/TH).

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