21energy Ofen 3 Base
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21energySHA-256BTC
Ofen 3 Base
40 TH/s1,000 WAir-cooled
Profit / day
-$0.61/day
after power at $0.08/kWh
Efficiency
25.00J/TH
Availability
Not stockedWe don’t carry this model. Ask and we’ll try to source one.—
Profitability · SHA-256 · BTC
Is the Ofen 3 Base profitable?
Not at $0.08 per kWh. The 21energy Ofen 3 Base mines Bitcoin on the SHA-256 algorithm at 40 TH/s, drawing 1,000 W (25.0 J/TH). At $0.08 per kWh it earns about $1.31 a day but spends $1.92 on power, so it loses $0.61 a day.
It’s #144 of 269 SHA-256 miners on efficiency. It isn’t in stock with us at the moment. It’s an air-cooled unit, released in October 2026.
- Break-even power price
- $0.054/kWh
- Daily profit rank
- #251of 533
It only makes money below this.
Across every miner we track.
Ofen 3 Base specifications
Other coins it can mine
Mine instead
BitcoinBTCRanked on
$1.310.0000175 BTC
–
0.0000047%
$34.4B
−3.5%
QuaiQUAI
$1.44197.71 QUAI
+10%
0.04%
$90kLow liquidity
+12.7%
eCashXEC
$1.33232,386 XEC
+2%
0.09%
$3.5M
−6.7%
Bitcoin CashBCH
$1.210.00500 BCH
−8%
0.0013%
$171.1M
−12.4%
DigiByte (SHA-256)DGB
$0.71223.67 DGB
−46%
0.08%
$2.5M
−0.9%
Paid on top
Fractal BitcoinFB
+<$0.010.000201 FB
+<1%
0.0000045%
$2.5M
−17.7%Volatile
NamecoinNMC
+<$0.010.0000171 NMC
+<1%
0.0000045%
$0Illiquid
+0.4%
ElastosELA
+<$0.010.0000171 ELA
+<1%
0.0000045%
$399k
+23.2%Volatile
HathorHTR
+<$0.010.00154 HTR
+<1%
0.0000045%
$67kLow liquidity
−14.7%
Max potential profitUnlikely
-$0.61/day
-$0.61 BTC profit + <$0.01 paid on top
How it compares · SHA-256 miners
| Miner | Rank | Efficiency | Profit / day |
|---|---|---|---|
| Bitmain Antminer S23 Hyd 3U (1.16 PH) | #1 | 9.5 J/TH | $16.71 |
| Bitdeer SealMiner A4 Ultra Hydro | #2 | 9.4 J/TH | $12.85 |
| Bitmain Antminer S23e Hyd U2H (865T) | #3 | 10.0 J/TH | $11.63 |
| Bitmain Antminer S23e Hyd 2U (865Th) | #4 | 10.0 J/TH | $11.63 |
| 21energy Ofen 3 ProEarlier model | #115 | 18.3 J/TH | -$0.15 |
| 21energy Ofen 3 Pro XLNewer model | #121 | 18.3 J/TH | -$0.31 |
| 21energy Ofen 3 BaseThis miner | #131 | 25.0 J/TH | -$0.61 |
| Heatbit Maxi Pro | #137 | 25.0 J/TH | -$0.92 |
| 21energy Ofen 3 Base XL | #144 | 25.0 J/TH | -$1.23 |
| Canaan Avalon Made A1366 | #162 | 25.0 J/TH | -$2.00 |
More from 21energy
| Miner | Profit / day |
|---|---|
| 21energy Ofen 2 ProSHA-256 | -$0.15 |
| 21energy Ofen 2SHA-256 | -$0.61 |
Figures updated 18:50 UTC, 9 November 2026, using today’s network difficulty and coin prices. Estimates, not financial advice.