B
Bitmain
Blake2B · Released 2018-Q1
Antminer A3 (815Gh)
Blake2B· Mines 
SCC
SCCVerdict at your rate
NOT PROFITABLE
at /kWh
Profitability
At your electricity rate
Electricity rate
$0.080/kWh
$0.03$0.08 (hosted)$0.16 (US avg)$0.30
Profit per day
-$2.45
Annual ROI
—
Break-even Never
Revenue
$0.00
Coins mined × price
Electricity
-$2.45
1.27 kW × 24h × $0.080
Revenue vs Cost (daily)
Gross margin: — · Breaks even at $0.000/kWh
Break-even timeline
Path to profitability
Cumulative net P/L over 24 months from purchase date
Day 0
-$50
Never
$0
12 months
-$944
24 months
-$1,837
Specifications
Full spec sheet
Identity
ManufacturerBitmain
AlgorithmBlake2B
CoinsSCC
Release2018-Q1
Performance
Hashrate815 GH/s
Power1,275 W
Efficiency1.56 J/GH
Hardware
Noise76 dB
Weight4,200 kg
Dimensions125 x 208 x 321 mm
Voltage11.60~13.00 V
Temperature0-40°C
Market Data
Estimated Price$50
MSRP$50
Price SourceEstimated from power × algorithm × release-age heuristic
Last VerifiedMay 11, 2026
Investor scenario
12-month projection
Stress-test returns against difficulty ramps and price swings
Coin price / mo
+0%
Network / mo
+1.5%
Uptime
97%
Facility load
5%
Fixed OpEx
$0 / mo
Resale
30%
12M net
-$789
Payback
Never
Avg $/day
-$2.16
Scenario
Base
Historical performance
Daily profit, last 90 days
Based on modeled market conditions and a constant $0.08/kWh rate.
90D AVG · -$2.44
-$2.44
90D HIGH · -$2.26
-$2.26
90D LOW · -$2.78
-$2.78
TREND · ↑
+13.6%
FAQ
Common questions
NOT PROFITABLE$0.080/kWh
Daily profit
-$2.45
PaybackNever
Est. price: $50
ESCROW.COM
Buyer protection on purchases over $1,000
Available from
No verified sellers currently in stock.
Prices refresh every 6 hours — check back soon.
At a glance
Break-evenNever
Annual ROI—
Max rate—
Cost / BTC$∞
Similar miners