# Solo Mining AMD Ryzen 9 3900X on EPIC-RandomX (EPIC)

Machine-readable solo mining datasheet for running **AMD Ryzen 9 3900X** on the **EPIC-RandomX (EPIC)** RandomX network. Evaluates hashrate output, electrical operational expenditure, Poisson block-finding probabilities, and mining economics tracked by BackPoW.

## Executive Summary

- Target Rig: AMD Ryzen 9 3900X (CPU)
- Target Network: EPIC-RandomX (EPIC) — Algorithm: RandomX
- Rig Hashrate: 12.59 KH/s (1.258600e+04 H/s)
- Power Consumption: 110 W (2.64 kWh/day)
- Energy Efficiency: 114.4 H/W (8.74 W/kH/s)
- Network Hashrate: 9.03 MH/s (9.033152e+06 H/s)
- Network Hash Share: 1.393312e-03 (0.139331%)
- Expected Block Discovery: about 366.4 blocks per year (mean time: ~23.9 hours)
- Operational Breakeven Electricity: 0.1829 USD/kWh

## Solo Mining Metrics Table

| Metric | Value | Unit | Description |
| --- | --- | --- | --- |
| Mining Device | AMD Ryzen 9 3900X | text | Hardware model name |
| Device Class | CPU | text | ASIC, GPU, or CPU architecture |
| Device Hashrate | 12.59 KH/s | H/s | Nominal hashrate on RandomX |
| Device Power Draw | 110 | Watts | Power consumption at wall |
| Energy Efficiency | 114.4 H/W (8.74 W/kH/s) | unit | Energy per unit hash computation |
| Network Hashrate | 9.03 MH/s | H/s | Total active network hash power |
| Network Difficulty | 532304130.08991516 | number | Current consensus target difficulty |
| Block Time (Observed) | 120.0 | seconds | Average interval between blocks |
| Block Reward | 0.9900 | EPIC | Full coinbase block reward + fees |
| Coin Spot Price | 0.4863 | USD | Current market exchange rate |
| Single Block Value | 0.48 | USD | Gross fiat value of one block |
| Mean Time to Block | 23.9 hours | time | T = (Nethash / Hashrate) * BlockTime |
| Daily Block Probability | 63.33% | percent | 24-hour Poisson chance |
| Monthly Block Probability | 99.99% | 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 | 366.4132 | count | Average over 365.25 days |
| Daily Gross Output | 0.993153 | EPIC | Expected daily coin yield |
| Daily Gross Value | 0.48 | USD | Revenue before power costs |
| Daily Energy Consumed | 2.64 | kWh/day | Kilowatt-hours consumed |
| Power Cost @ 0.05 USD/kWh | 0.13 | USD/day | Low industrial tariff |
| Power Cost @ 0.08 USD/kWh | 0.21 | USD/day | Standard mining tariff |
| Power Cost @ 0.10 USD/kWh | 0.26 | USD/day | Residential tariff |
| Breakeven Electricity | 0.1829 | USD/kWh | Max rate before loss |
| Hardware Price | 140 / 160 / 180 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 | 2.5 hours | 0.3 | 0.02 USD |
| 50% Median | 50th | 16.6 hours | 1.8 | 0.15 USD |
| 90% Bad Luck | 90th | 2.3 days | 6.1 | 0.48 USD |
| 95% Extreme Drought | 95th | 3.0 days | 7.9 | 0.63 USD |

## Hardware Benchmark Profile

- Device: AMD Ryzen 9 3900X
- Slug: amd-ryzen-9-3900x
- Architecture: CPU
- Algorithm: RandomX
- Hashrate: 12.59 KH/s
- Power: 110 W
- Efficiency: 114.4 H/W (8.74 W/kH/s)
- Market Cost: 140 / 160 / 180 USD

## Blockchain Network Overview

- Blockchain: EPIC-RandomX (EPIC)
- Consensus: RandomX
- Network Hashrate: 9.03 MH/s (9.033152e+06 H/s)
- Difficulty: 532304130.08991516
- Block Time: 120.0 seconds
- Block Reward: 0.9900 EPIC (approx 0.48 USD)
- Spot Price: 0.4863 USD
- Cost of Production (Flagship): 0.09 USD (AMD Threadripper PRO 7995WX)

## Solo Mining Connection

Connect your AMD Ryzen 9 3900X Stratum client to a local EPIC-RandomX full node or solo pool proxy (e.g. Public-Pool, Solo CKPool). Coinbase rewards go directly to your wallet.

## Machine-Readable JSON Summary

```json
{
  "coin_id": "EPIC-RandomX",
  "coin_name": "EPIC-RandomX",
  "ticker": "EPIC",
  "algorithm": "RandomX",
  "hardware_name": "AMD Ryzen 9 3900X",
  "hardware_slug": "amd-ryzen-9-3900x",
  "hardware_type": "CPU",
  "miner_hashrate_h_s": 12586.0,
  "power_watts": 110.0,
  "efficiency": "114.4 H/W (8.74 W/kH/s)",
  "network_hashrate_h_s": 9033151.777746381,
  "difficulty": 532304130.08991516,
  "block_time_seconds": 120.0,
  "block_reward_coins": 0.99,
  "spot_price_usd": 0.486303,
  "single_block_value_usd": 0.48143997,
  "mean_time_to_block_seconds": 86125.71216665866,
  "daily_block_probability": 0.6332902948456662,
  "monthly_block_probability": 0.999999999999915,
  "yearly_block_probability": 1.0,
  "expected_blocks_per_year": 366.41322557581947,
  "daily_gross_usd": 0.4829732301952793,
  "daily_kwh": 2.64,
  "breakeven_electricity_usd_per_kwh": 0.18294440537699974,
  "hardware_price_usd": {
    "min": 140.0,
    "median": 160.0,
    "max": 180.0
  },
  "retrieved_utc": "2026-10-07T20:25:28Z"
}
```

## Provenance & Integration Links

- Retrieved: 2026-10-07T20:25:28Z
- Canonical HTML page: https://backpow.com/EPIC-RandomX/amd-ryzen-9-3900x
- Coin datasheet: https://backpow.com/EPIC-RandomX.md
- Hardware datasheet: https://backpow.com/hardware/amd-ryzen-9-3900x.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