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21energy
21energy
Ofen 2 (40Th/s)

-$1.15/day
21energy Ofen 2
40Th/s
SHA-256
0%

1 votes

title-decorationDescription

21energy Ofen 2 is an ASIC miner designed for SHA-256 algorithm, specifically targeting BTC (Bitcoin) . It delivers a maximum hashrate of 40Th/s while consuming 1000W of power, resulting in an energy efficiency of 0.025j/Gh.
Best price

Apr 2026

$2,043
(€1,770)
Need help with your purchase?

title-decorationProfitability

Quantity
Daily
Monthly
Yearly
Income
$1.25
$37.52
$456.52
Electricity
-$2.40
-$72.00
-$876.00
Profit
-$1.15
-$34.48
-$419.48

title-decorationAlgorithms

Algorithm
Efficiency
Profitability
SHA-256
-$1.15

title-decorationSpecifications

Manufacturer21energy
ModelOfen 2
ReleaseApr 2026
Size900 x 320 x 140mm
Weight24000g
Chip nameBM1366
Noise level35dB
CoolingHeater for home
Power1000W
InterfaceWiFi / USB / Ethernet
Operating systemBraiins OS+
Temperature5 - 45 °C
Humidity5 - 95 %
Additional infoUp to 50m²

title-decorationMining pools

image
4%
PPS+
image
PPLNS
image
4%
FPPS
image
FPPS

title-decorationRelated Videos

title-decorationWhere to buy?

Austria
Need help with your purchase?

title-decorationFrequently Asked Questions (FAQ)

No, mining profitability is not guaranteed to stay the same over time.
This 21energy Ofen 2 currently generates a daily profit of approximately -$1.15, assuming an electricity cost of $0.10 per kWh.

However, this profit can fluctuate due to various factors such as global hashrate, network difficulty, block reward, and cryptocurrency exchange rates. Be prepared for potential changes in profitability based on these market dynamics.
The 21energy Ofen 2 has a hashrate of 40Th/s for the SHA-256 algorithm.
Hashrates are only comparable between miners that use the same algorithm.
Yes, the 21energy Ofen 2 consumes 1000W per hour.
Enter your local electricity price in the header preferences to see profitability calculations based on your actual electricity cost.
Electricity expenses are a significant factor in mining profitability. Higher electricity rates can reduce or even eliminate profits, which is why assessing local energy costs is crucial when determining if mining is viable.
With higher electricity costs, investing in a highly efficient miner is even more important.
The lifespan of mining hardware depends on factors such as usage intensity, environmental conditions (temperature, humidity, dust).
Proper maintenance and ideal operating conditions can extend hardware longevity.