As of October 2026, the most profitable coin for AMD Ryzen 9 9900X mining is Monero (XMR) on RandomX, with 14,841 H/s hashrate and $0.23/day net profit after electricity costs ($0.0784/kWh).
AMD Ryzen 9 9900X
Best coin: Monero — net $0.23/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 | 14,841 H/s | 126 W | 189 W | $0.59 | $0.36 | $0.23 | 117.8 | 78.4 | $0.0047/W | $0.0031/W | 6.3yr | 10.4yr |
| Tari (XTM) | randomx | 14,841 H/s | 126 W | 189 W | $0.49 | $0.36 | $0.14 | 117.8 | 78.4 | $0.0039/W | $0.0026/W | 10.7yr | 17.6yr |
| Zephyr Protocol (ZEPH) | randomx | 14,841 H/s | 126 W | 189 W | $0.41 | $0.36 | $0.06 | 117.8 | 78.4 | $0.0033/W | $0.0022/W | 26.1yr | ∞ |
| Salvium (SAL) | randomx | 14,841 H/s | 126 W | 189 W | $0.40 | $0.36 | $0.05 | 117.8 | 78.4 | $0.0032/W | $0.0021/W | ∞ | ∞ |
| Quantum Resistant Ledger (QRL) | randomx | 14,841 H/s | 126 W | 189 W | $0.32 | $0.36 | -$0.03 | 117.8 | 78.4 | $0.0026/W | $0.0017/W | ∞ | ∞ |
Income trend — XMR (last 30 days)
Gross income (upper line) and net profit (lower) at 14,841 H/s. Shaded area is electricity cost.
Frequently Asked Questions
What is the most profitable coin to mine with AMD Ryzen 9 9900X?
The most profitable coin for AMD Ryzen 9 9900X is Monero (XMR) on the RandomX algorithm. Net profit: +$0.23/day (gross income $0.59 minus electricity $0.36 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 9900X on RandomX?
The typical hashrate of AMD Ryzen 9 9900X on RandomX is 14,841 H/s at 126W 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 189W (4.5 kWh/day).
How much does a AMD Ryzen 9 9900X mining system cost?
Minimum used build for AMD Ryzen 9 9900X: CPU — $541, motherboard (any AM5 B650/X670) — $192, RAM (DDR5 5200 8GB × 2) — $96, SSD — $18, PSU 550W — $42. Total: ~$889. Prices are approximate, based on the used market.
How long does it take for AMD Ryzen 9 9900X mining to pay for itself?
At current network parameters and $0.0784/kWh electricity: CPU-only payback — ~6.3 years, full system (~$889) payback — ~10.4 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.