Antminer S19j

Hashrate 90.0 TH/s Power 3,100 W Efficiency 34.4 J/TH

Bitdeer SealMiner A2

Hashrate 226.0 TH/s Power 3,730 W Efficiency 16.5 J/TH

Antminer S19j vs Bitdeer SealMiner A2

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

Specifications Comparison

Antminer S19j	Specification	Bitdeer SealMiner A2
90.0 TH/s	Hashrate	226.0 TH/s
3,100 W	Power Consumption	3,730 W
34.4 J/TH	Efficiency	16.5 J/TH
75 dB	Noise Level	75 dB
13.0 kg	Weight	15.5 kg
10,577 BTU/hr	BTU Output	12,727 BTU/hr
84/100	Home Mining Score	30/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Bitdeer

Profitability Comparison

Electricity Rate:

$/kWh

Antminer S19j

Daily Revenue 0.00004142 BTC $3.28

Daily Electricity -$7.44

Daily Profit -$4.16

Monthly -$124.87

Yearly -$1,519.19

Bitdeer SealMiner A2

Daily Revenue 0.00010400 BTC $8.23

Daily Electricity -$8.95

Daily Profit -$0.72

Monthly -$21.63

Yearly -$263.17

Based on BTC price of $79,143 and current network difficulty as of May 15, 2026. Actual results vary.

Verdict

Based on our multi-factor analysis, the Bitdeer SealMiner A2 wins on 3 of 5 factors (efficiency, hashrate, price-performance). Where it pulls away hardest is 151% more hashrate (90.0 vs 226.0 TH/s). The Antminer S19j claws back ground on power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.

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

Spec Deltas

Here is every spec where the Antminer S19j and Bitdeer SealMiner A2 actually differ, with the gap quantified:

Bitdeer SealMiner A2 151% more hashrate (90.0 vs 226.0 TH/s)
Antminer S19j 17% better power draw (3,100 vs 3,730 W)
Bitdeer SealMiner A2 52% better efficiency (34.4 vs 16.5 J/TH)
Antminer S19j 16% better weight (13.0 vs 15.5 kg)
Bitdeer SealMiner A2 20% more heat output (10,577 vs 12,727 BTU/hr)
Antminer S19j 180% more home mining score (84.0 vs 30.0)

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.

Antminer S19j	Metric	Bitdeer SealMiner A2
$2,000	Upfront cost (MSRP)	$2,760
-$4.16	Daily net profit	-$0.72
-$3,519	Net after 1 year	-$3,023
-$5,038	Net after 2 years	-$3,286
-$6,558	Net after 3 years	-$3,550
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

Antminer S19j

Score: 84/100. 75 dB noise level.

Best for Efficiency

Bitdeer SealMiner A2

16.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Which makes more money, the Antminer S19j or the Bitdeer SealMiner A2?

At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 is more profitable at $-0.72/day compared to $-4.16/day for the Antminer S19j. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Is the Antminer S19j or the Bitdeer SealMiner A2 better for noise-sensitive spaces?

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

Which is better for home mining, the Antminer S19j or Bitdeer SealMiner A2?

The Antminer S19j scores 84/100 on our Home Mining Score (vs 30/100 for the Bitdeer SealMiner A2). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

Antminer S19j vs Bitdeer SealMiner A2: how much does the efficiency gap matter?

The Antminer S19j runs at 34.4 J/TH while the Bitdeer SealMiner A2 runs at 16.5 J/TH — a difference of 17.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 52% better efficiency (34.4 vs 16.5 J/TH).

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