Antminer S9j

Hashrate 14.5 TH/s Power 1,350 W Efficiency 93.1 J/TH

Bitdeer SealMiner A2 Hyd

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

Antminer S9j vs Bitdeer SealMiner A2 Hyd

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

Specifications Comparison

Antminer S9j	Specification	Bitdeer SealMiner A2 Hyd
14.5 TH/s	Hashrate	446.0 TH/s
1,350 W	Power Consumption	7,360 W
93.1 J/TH	Efficiency	16.5 J/TH
76 dB	Noise Level	50 dB
4.2 kg	Weight	20.5 kg
4,606 BTU/hr	BTU Output	25,112 BTU/hr
83/100	Home Mining Score	44/100
—	Release Year	—
SHA-256	Algorithm	SHA-256
Bitmain	Manufacturer	Bitdeer

Profitability Comparison

Electricity Rate:

$/kWh

Antminer S9j

Daily Revenue 0.00000667 BTC $0.52

Daily Electricity -$3.24

Daily Profit -$2.72

Monthly -$81.53

Yearly -$991.96

Bitdeer SealMiner A2 Hyd

Daily Revenue 0.00020524 BTC $16.07

Daily Electricity -$17.66

Daily Profit -$1.60

Monthly -$47.97

Yearly -$583.60

Based on BTC price of $78,274 and current network difficulty as of May 16, 2026. Actual results vary.

Verdict

Weighing six performance factors, the Bitdeer SealMiner A2 Hyd comes out ahead — it takes 3 of 5 (efficiency, hashrate, noise level). Its biggest concrete edge: 2976% more hashrate (14.5 vs 446.0 TH/s). The Antminer S9j holds the edge in power consumption and home mining score. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.

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

Spec Deltas

The Antminer S9j and Bitdeer SealMiner A2 Hyd diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":

Bitdeer SealMiner A2 Hyd 2976% more hashrate (14.5 vs 446.0 TH/s)
Antminer S9j 82% better power draw (1,350 vs 7,360 W)
Bitdeer SealMiner A2 Hyd 82% better efficiency (93.1 vs 16.5 J/TH)
Bitdeer SealMiner A2 Hyd 34% better noise (76.0 vs 50.0 dB)
Antminer S9j 80% better weight (4.2 vs 20.5 kg)
Bitdeer SealMiner A2 Hyd 445% more heat output (4,606 vs 25,112 BTU/hr)
Antminer S9j 89% more home mining score (83.0 vs 44.0)

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 S9j	Metric	Bitdeer SealMiner A2 Hyd
—	Upfront cost (MSRP)	$6,150
-$2.72	Daily net profit	-$1.60
-$992	Net after 1 year	-$6,734
-$1,984	Net after 2 years	-$7,317
-$2,976	Net after 3 years	-$7,901
—	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 S9j

Score: 83/100. 76 dB noise level.

Best for Efficiency

Bitdeer SealMiner A2 Hyd

16.5 J/TH — lower electricity cost per terahash.

Frequently Asked Questions

Is the Antminer S9j or Bitdeer SealMiner A2 Hyd more profitable?

At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 Hyd is more profitable at $-1.60/day compared to $-2.72/day for the Antminer S9j. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Antminer S9j or Bitdeer SealMiner A2 Hyd?

The Bitdeer SealMiner A2 Hyd is quieter at 50 dB compared to the Antminer S9j at 76 dB. For home mining, lower noise levels make a significant difference in livability.

Antminer S9j vs Bitdeer SealMiner A2 Hyd: which fits a residential setup better?

The Antminer S9j scores 83/100 on our Home Mining Score (vs 44/100 for the Bitdeer SealMiner A2 Hyd). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

How far apart are the Antminer S9j and Bitdeer SealMiner A2 Hyd on J/TH?

The Antminer S9j runs at 93.1 J/TH while the Bitdeer SealMiner A2 Hyd runs at 16.5 J/TH — a difference of 76.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 82% better efficiency (93.1 vs 16.5 J/TH).

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