# Solo Mining GeForce RTX 3090 on Zephyr (ZEPH)

Machine-readable solo mining datasheet for running **GeForce RTX 3090** on the **Zephyr (ZEPH)** RandomX network. Evaluates hashrate output, electrical operational expenditure, Poisson block-finding probabilities, and mining economics tracked by BackPoW.

## Executive Summary

- Target Rig: GeForce RTX 3090 (GPU)
- Target Network: Zephyr (ZEPH) — Algorithm: RandomX
- Rig Hashrate: 2.00 KH/s (2.001000e+03 H/s)
- Power Consumption: 290 W (6.96 kWh/day)
- Energy Efficiency: 6.9 H/W (144.93 W/kH/s)
- Network Hashrate: 37.98 MH/s (3.797976e+07 H/s)
- Network Hash Share: 5.268595e-05 (0.005269%)
- Expected Block Discovery: about 13.8 blocks per year (mean time: ~26.4 days)
- Operational Breakeven Electricity: 0.0077 USD/kWh

## Solo Mining Metrics Table

| Metric | Value | Unit | Description |
| --- | --- | --- | --- |
| Mining Device | GeForce RTX 3090 | text | Hardware model name |
| Device Class | GPU | text | ASIC, GPU, or CPU architecture |
| Device Hashrate | 2.00 KH/s | H/s | Nominal hashrate on RandomX |
| Device Power Draw | 290 | Watts | Power consumption at wall |
| Energy Efficiency | 6.9 H/W (144.93 W/kH/s) | unit | Energy per unit hash computation |
| Network Hashrate | 37.98 MH/s | H/s | Total active network hash power |
| Network Difficulty | 3722852038.8901935 | number | Current consensus target difficulty |
| Block Time (Observed) | 120.1 | seconds | Average interval between blocks |
| Block Reward | 3.9500 | ZEPH | Full coinbase block reward + fees |
| Coin Spot Price | 0.3572 | USD | Current market exchange rate |
| Single Block Value | 1.41 | USD | Gross fiat value of one block |
| Mean Time to Block | 26.4 days | time | T = (Nethash / Hashrate) * BlockTime |
| Daily Block Probability | 3.72% | percent | 24-hour Poisson chance |
| Monthly Block Probability | 67.93% | percent | 30-day Poisson chance |
| 1-Year Block Probability | 99.99% | percent | 365-day Poisson chance |
| 3-Year Block Probability | 99.99% | percent | 3-year cumulative chance |
| Expected Blocks / Year | 13.8452 | count | Average over 365.25 days |
| Daily Gross Output | 0.149729 | ZEPH | Expected daily coin yield |
| Daily Gross Value | 0.05 | USD | Revenue before power costs |
| Daily Energy Consumed | 6.96 | kWh/day | Kilowatt-hours consumed |
| Power Cost @ 0.05 USD/kWh | 0.35 | USD/day | Low industrial tariff |
| Power Cost @ 0.08 USD/kWh | 0.56 | USD/day | Standard mining tariff |
| Power Cost @ 0.10 USD/kWh | 0.70 | USD/day | Residential tariff |
| Breakeven Electricity | 0.0077 | USD/kWh | Max rate before loss |
| Hardware Price | 580 / 650 / 720 USD | USD | Market range (min / med / max) |

## Poisson Block Discovery Model & Variance

Solo mining block discovery follows a memoryless Poisson process where every hash attempt has an identical, independent success probability.

- Formula: `P(X >= 1) = 1 - exp(-t / T)`
- `t` is mining duration in seconds
- `T` is mean time between blocks: `T = (Network Hashrate / Miner Hashrate) * Block Time`

Luck percentile table (reference electricity rate 0.08 USD/kWh):

| Luck Scenario | Percentile | Duration | Power (kWh) | Cost @ 0.08 |
| --- | --- | --- | --- | --- |
| 10% Lucky Hit | 10th | 2.8 days | 19.3 | 1.55 USD |
| 50% Median | 50th | 18.3 days | 127.3 | 10.18 USD |
| 90% Bad Luck | 90th | 60.7 days | 422.8 | 33.82 USD |
| 95% Extreme Drought | 95th | 79.0 days | 550.1 | 44.00 USD |

## Hardware Benchmark Profile

- Device: GeForce RTX 3090
- Slug: geforce-rtx-3090
- Architecture: GPU
- Algorithm: RandomX
- Hashrate: 2.00 KH/s
- Power: 290 W
- Efficiency: 6.9 H/W (144.93 W/kH/s)
- Market Cost: 580 / 650 / 720 USD

## Blockchain Network Overview

- Blockchain: Zephyr (ZEPH)
- Consensus: RandomX
- Network Hashrate: 37.98 MH/s (3.797976e+07 H/s)
- Difficulty: 3722852038.8901935
- Block Time: 120.1 seconds
- Block Reward: 3.9500 ZEPH (approx 1.41 USD)
- Spot Price: 0.3572 USD
- Cost of Production (Flagship): 0.09 USD (AMD Threadripper PRO 7995WX)

## Tracked Solo Mining Pools

Solo pools for Zephyr (ZEPH) routing 100% of block rewards to the miner address:

| Pool Name | Fee | Link | Low Hashrate |
| --- | --- | --- | --- |
| herominers.com | 0.9% | [herominers.com](https://zephyr.herominers.com) | No |
| miningocean.org | 0.9% | [miningocean.org](https://zephyr.miningocean.org) | No |
| hashvault.pro | 0.9% | [hashvault.pro](https://hashvault.pro/zephyr) | No |
| pool.kryptex.com | 1% | [pool.kryptex.com](https://pool.kryptex.com/zeph) | No |
| 2miners.com | 1.5% | [2miners.com](https://solo-zeph.2miners.com) | No |
| pwnda.org | 0% | [pwnda.org](https://pwnda.org) | Yes |
| jackpool.ru | 0.5% | [jackpool.ru](https://jackpool.ru/#zeph_randomx) | Yes |
| kukume.net | 0.5% | [kukume.net](https://kukume.net/zephyr) | Yes |
| aikapool.com | 1% | [aikapool.com](https://aikapool.com/zeph) | Yes |
| fastpool.xyz | 1% | [fastpool.xyz](https://fastpool.xyz/zeph) | Yes |

## Machine-Readable JSON Summary

```json
{
  "coin_id": "Zephyr",
  "coin_name": "Zephyr",
  "ticker": "ZEPH",
  "algorithm": "RandomX",
  "hardware_name": "GeForce RTX 3090",
  "hardware_slug": "geforce-rtx-3090",
  "hardware_type": "GPU",
  "miner_hashrate_h_s": 2001.0,
  "power_watts": 290.0,
  "efficiency": "6.9 H/W (144.93 W/kH/s)",
  "network_hashrate_h_s": 37979764.44115821,
  "difficulty": 3722852038.8901935,
  "block_time_seconds": 120.088,
  "block_reward_coins": 3.95,
  "spot_price_usd": 0.35724,
  "single_block_value_usd": 1.411098,
  "mean_time_to_block_seconds": 2279317.3174461806,
  "daily_block_probability": 0.037196643376559924,
  "monthly_block_probability": 0.679278650503949,
  "yearly_block_probability": 0.9999990292512839,
  "expected_blocks_per_year": 13.845198190903115,
  "daily_gross_usd": 0.05348920322186723,
  "daily_kwh": 6.959999999999999,
  "breakeven_electricity_usd_per_kwh": 0.0076852303479694305,
  "hardware_price_usd": {
    "min": 580.0,
    "median": 650.0,
    "max": 720.0
  },
  "retrieved_utc": "2026-10-07T20:25:28Z"
}
```

## Provenance & Integration Links

- Retrieved: 2026-10-07T20:25:28Z
- Canonical HTML page: https://backpow.com/Zephyr/geforce-rtx-3090
- Coin datasheet: https://backpow.com/Zephyr.md
- Hardware datasheet: https://backpow.com/hardware/geforce-rtx-3090.md
- Solo pools directory: https://backpow.com/solo-pools.md
- Live queries over MCP: https://mcp.backpow.com/mcp (tools `calculate_solo_mining_odds`, `get_hardware_benchmarks`)
- Licence: CC BY 4.0 — https://backpow.com/llms.txt