NerdMiner NerdOCTAxe Rev 3.1 on Fractal — Mining Profit, Solo Odds & Cost of Production
12.00 TH/s · SHA-256 · network 129.31 PH/s. A NerdMiner NerdOCTAxe Rev 3.1 solo mining Fractal (FB) has about 65 blocks per year, i.e. an expected block roughly every 6 days for the full 6.2500 FB (≈ 2 USD) reward.
NerdMiner NerdOCTAxe Rev 3.1 on Fractal — Mining Truth Benchmark & Specifications
Consolidated PoW oracle metrics for operating a NerdMiner NerdOCTAxe Rev 3.1 on Fractal (FB) at live network difficulty and benchmark industrial electricity (0.069 USD/kWh):
| Specification / Metric | Value | Context & Meaning |
|---|---|---|
| Algorithm & Hashrate | 12.00 TH/s on SHA-256 | Nominal device hashrate |
| Rated Power Draw | 240 W (49.98 GH/W) | Energy efficiency threshold |
| Daily Pool Yield (Gross) | 0.42 USD / day | Expected gross pool revenue at spot price |
| Power Consumption Cost | 0.40 USD / day | Electricity expense at 0.069 USD/kWh (5.8 kWh/day) |
| Net Daily Operating Margin | +0.02 USD / day | Operational profit/loss after electricity |
| Operational Breakeven | 0.072 USD/kWh | Maximum electricity tariff before negative profit |
| Cost of Production (@ 0.069$ kWh) | 0.3571 USD per FB | Direct electricity expense to produce 1 FB |
| Solo Discovery Expectation | 1 block every ~6 days | Poisson arrival time at network hashrate 129.31 PH/s |
Can you solo mine Fractal with a NerdMiner NerdOCTAxe Rev 3.1?
Yes — a NerdMiner NerdOCTAxe Rev 3.1 (12.00 TH/s) can solo mine Fractal (FB) via a solo pool. At Fractal's 129.31 PH/s SHA-256 network that is about 65 blocks per year — expected one block roughly every 6 days, for the full 6.2500 FB (≈ 2 USD) block. BackPoW computes this from live network difficulty using a Poisson block-discovery model. Realistically this is genuinely worth a patient solo run.
Hardware Tier & Ecosystem Ranking on Fractal
The NerdMiner NerdOCTAxe Rev 3.1 is categorized in the Home / Solo Lottery Tier (Compact or low-power hardware optimized for decentralized solo lottery participation rather than commercial pool revenue.). Among all 9 tracked models on Fractal, it ranks #7 in electrical efficiency (49,980,000,000.00 H/W) and #1 in raw hashrate (12.00 TH/s).
Electricity Operating Costs & Breakeven
Running a NerdMiner NerdOCTAxe Rev 3.1 (240 W) pulls about 5.76 kWh per day (175.3 kWh per month). At the standard rate of 0.069 USD/kWh, electricity costs roughly 0.40 USD per day (12.10 USD/month or 145 USD/year). Statistically that year returns 65.05 blocks, worth about $152 — expected revenue covers the power bill about 1.1x over.
The operational breakeven threshold is 0.072 USD/kWh. Expected net operating margin at benchmark tariffs:
- At 0.040 USD/kWh (Hydro / Renewable): +0.19 USD / day
- At 0.069 USD/kWh (Standard Industrial): +0.02 USD / day
- At 0.120 USD/kWh (Residential Grid): -0.27 USD / day
Break-even Coin Price Target: For this hardware to break even on electricity, Fractal must trade at or above 0.3571 USD at standard industrial power (0.069 USD/kWh), or 0.6210 USD at residential power (0.120 USD/kWh).
Bankroll & Variance Risk Simulator
Solo mining block discovery follows a memoryless Poisson distribution. While the average wait is 6 days, real-world dispersion ranges across 5% and 50% quantiles:
- Lucky streak (5% Odds): Block within ~6.9 hours (1-in-20 fastest discovery, power cost: ~0 USD)
- Median expectation (50% Odds): Block within ~4 days (Nominal median, power cost: ~2 USD)
- Bad luck streak (5% Odds): Can stretch up to ~17 days (1-in-20 extended dry spell, power cost: ~7 USD)
High Variance Alert: In a 1-in-20 severe drought (~17 days), cumulative electricity burned (~7 USD) will exceed the block reward value (2 USD). Pool mining is recommended for risk-averse operators.
How other hardware compares on Fractal
Devices in the same hashrate class, solo mining Fractal at today's difficulty:
| Hardware | Hashrate | Expected block | Chance in 1 year |
|---|---|---|---|
| Bitaxe NerdOctaxe | 9.61 TH/s | 7 days | 100.00% |
| Bitaxe NerdQaxe++ Rev 6.1 | 6.00 TH/s | 11 days | 100.00% |
| Bitaxe NerdQaxe++ | 4.81 TH/s | 14 days | 100.00% |
| NerdMiner NerdQaxe+ | 2.50 TH/s | 27 days | 100.00% |
| Bitaxe NerdQaxe | 2.40 TH/s | 28 days | 100.00% |
How the odds have moved
Fractal's network hashrate fell 48% since 2026-09-22, from 250.33 PH/s to 129.31 PH/s — so the same rig is now 48% more likely to find a block.
Where to point a NerdMiner NerdOCTAxe Rev 3.1 at Fractal
Solo mining still runs through a solo pool: it handles the block template and pays the full reward to whoever finds the block. BackPoW tracks 12 solo pools for Fractal with their stratum endpoints, fees, and pool hashrates — see Fractal solo mining pools:
- jackpool.ru (Fee: 0.5% · Hashrate: 708.08 TH/s)
- mining-dutch.nl (Fee: 1% · Hashrate: 501.82 TH/s)
- pool.kryptex.com (Fee: 1.5% · Hashrate: 31.11 PH/s)
How the odds are calculated
Each hash is an independent attempt, so block discovery is memoryless and follows an exponential distribution. The average time to a block is T = network_hashrate ÷ your_hashrate × block_time. The chance of hitting at least one block within a period t is then given by the Poisson relation P = 1 − e^(−t/T) — the realistic probability, not a misleading linear one. For this pair: daily chance 16.31%, yearly chance 100.00%.
Frequently Asked Questions: NerdMiner NerdOCTAxe Rev 3.1 on Fractal
Can you solo mine Fractal with a NerdMiner NerdOCTAxe Rev 3.1?
Yes — a NerdMiner NerdOCTAxe Rev 3.1 (12.00 TH/s) can solo mine Fractal (FB) via a solo pool. At Fractal's 129.31 PH/s SHA-256 network that is about 65 blocks per year — expected one block roughly every 6 days, for the full 6.2500 FB (≈ 2 USD) block. BackPoW computes this from live network difficulty using a Poisson block-discovery model.
Is SHA-256 ASIC-resistant, and where does the NerdMiner NerdOCTAxe Rev 3.1 stand?
SHA-256 is an ASIC-dominated algorithm. The NerdMiner NerdOCTAxe Rev 3.1 delivers 12.00 TH/s (#1 of 9 models on Fractal). It belongs to the Home / Solo Lottery Tier, built for compact, decentralized solo attempts rather than commercial pool income.
What is the operating power cost and breakeven electricity rate for a NerdMiner NerdOCTAxe Rev 3.1 on Fractal?
At 240 W, operating a NerdMiner NerdOCTAxe Rev 3.1 consumes 5.76 kWh/day (175.3 kWh/month). At standard electricity (0.069 USD/kWh), the power bill is 0.40 USD/day (12.10 USD/month). The operational breakeven threshold is 0.072 USD/kWh.
What happens if my NerdMiner NerdOCTAxe Rev 3.1 encounters a severe dry spell on Fractal?
Block discovery is an independent Poisson process with no memory. In a 1-in-20 bad luck drought (5% worst luck), finding a block can stretch up to 17 days, accumulating roughly 7 USD in power costs.
Alternative Mining Options for NerdMiner NerdOCTAxe Rev 3.1
Comparing solo odds, jackpot block value, and daily pool revenue across other coins minable with this rig:
| Coin | Expected block | Block value | Pool earnings / Day |
|---|---|---|---|
| Quai-SHA (QUAI) | 4.2 hours | 0.08 USD | 0.45 USD |
| DGB-SHA (DGB) | 2 days | 0.84 USD | 0.34 USD |
| BitcoinII (BTCII) | 13 days | 5 USD | 0.39 USD |
| eCash (XEC) | 35 days | 12 USD | 0.35 USD |