As of October 2026, the most profitable coin for AMD Ryzen 9 3900X mining is Monero (XMR) on RandomX, with 12,185 H/s hashrate and $0.16/day net profit after electricity costs ($0.0784/kWh).
AMD Ryzen 9 3900X
Best coin: Monero — net $0.16/day
Specifications
System Build (used prices)
Mining Profitability
| Coin | Algo | Hashrate | CPU W | System W | Income/day | Elec/day | Profit/day | CPU H/s/W | Sys H/s/W | CPU $/W | Sys $/W | ROI CPU | ROI System |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Monero (XMR) | randomx | 12,185 H/s | 110 W | 171 W | $0.48 | $0.32 | $0.16 | 110.8 | 71.4 | $0.0044/W | $0.0028/W | 2.2yr | 5.6yr |
| Tari (XTM) | randomx | 12,185 H/s | 110 W | 171 W | $0.41 | $0.32 | $0.09 | 110.8 | 71.4 | $0.0037/W | $0.0024/W | 4.3yr | 10.8yr |
| Zephyr Protocol (ZEPH) | randomx | 12,185 H/s | 110 W | 171 W | $0.34 | $0.32 | $0.02 | 110.8 | 71.4 | $0.0031/W | $0.0020/W | 19.8yr | ∞ |
| Salvium (SAL) | randomx | 12,185 H/s | 110 W | 171 W | $0.33 | $0.32 | $0.01 | 110.8 | 71.4 | $0.0030/W | $0.0019/W | ∞ | ∞ |
| Quantum Resistant Ledger (QRL) | randomx | 12,185 H/s | 110 W | 171 W | $0.27 | $0.32 | -$0.06 | 110.8 | 71.4 | $0.0024/W | $0.0016/W | ∞ | ∞ |
Income trend — XMR (last 30 days)
Gross income (upper line) and net profit (lower) at 12,185 H/s. Shaded area is electricity cost.
Frequently Asked Questions
What is the most profitable coin to mine with AMD Ryzen 9 3900X?
The most profitable coin for AMD Ryzen 9 3900X is Monero (XMR) on the RandomX algorithm. Net profit: +$0.16/day (gross income $0.48 minus electricity $0.32 at $0.0784/kWh). Actual profitability depends on your electricity rate, system downtime, and other overhead costs.
What is the hashrate of AMD Ryzen 9 3900X on RandomX?
The typical hashrate of AMD Ryzen 9 3900X on RandomX is 12,185 H/s at 110W CPU power draw. This is a realistic sustained 24/7 mining figure on a standard system without fine-tuning. Total system power from the wall is 171W (4.1 kWh/day).
How much does a AMD Ryzen 9 3900X mining system cost?
Minimum used build for AMD Ryzen 9 3900X: CPU — $132, motherboard (any AM4 B550/X570) — $96, RAM (DDR4 3200 8GB × 2) — $60, SSD — $18, PSU 550W — $30. Total: ~$336. Prices are approximate, based on the used market.
How long does it take for AMD Ryzen 9 3900X mining to pay for itself?
At current network parameters and $0.0784/kWh electricity: CPU-only payback — ~2.2 years, full system (~$336) payback — ~5.6 years. These estimates do not account for potential downtime, hardware wear, changes in network difficulty, or coin price fluctuations. Use the table above to enter your electricity rate for accurate numbers.