AMD Ryzen 9 3900X mining: profitability and profit
The AMD Ryzen 9 3900X mines Monero (XMR) on the RandomX algorithm and delivers about 13.5 KH/s at 130 W. At the rate of October 25, 2026 that is roughly $0.55 per day and $16.59 per month before electricity.
Ryzen 9 3900X income by period
| Period | Income | Coins |
|---|---|---|
| Day | $0.55 | 0.000925 XMR |
| Week | $3.87 | 0.006478 XMR |
| Month | $16.59 | 0.027765 XMR |
| Year | $201.90 | 0.337807 XMR |
Ryzen 9 3900X profit after electricity
The Ryzen 9 3900X uses about 3.12 kWh per day (93.6 kWh per month). Net profit per month at different rates:
| Rate per kWh | Electricity per month | Profit per month |
|---|---|---|
| $0.05 | −$4.68 | $11.91 |
| $0.10 | −$9.36 | $7.23 |
| $0.15 | −$14.04 | $2.55 |
| $0.20 | −$18.72 | −$2.13 |
| $0.30 | −$28.08 | −$11.49 |
Is the Ryzen 9 3900X worth mining on?
The Ryzen 9 3900X earns about $16.59 per month — that ranks #16 of 119 CPUs in the FlowHash profitability ranking.
In efficiency (104 H/s per W) it is in the top third of the catalog. Income covers electricity at rates up to $0.18 per kWh: if your rate is lower, mining brings net profit; if it is higher, the gain disappears.
The catalog hashrate is a FlowHash estimate: the app shows the exact value after launch, and in the calculator you can replace it with your own measurement.
The CPU mines in the background and does not get in the way of the GPU: in FlowHash you can mine Monero on the CPU and Pearl on an NVIDIA RTX GPU at the same time.
Ryzen 9 3900X in the profitability ranking
| # | CPU | Hashrate | Power | Income / month |
|---|---|---|---|---|
| 14 | Intel Core Ultra 9 285K | 14 KH/s | 200 W | $17.21 |
| 15 | AMD Ryzen 9 5900X | 13.5 KH/s | 120 W | $16.59 |
| 16 | AMD Ryzen 9 3900X | 13.5 KH/s | 130 W | $16.59 |
| 17 | Intel Core i9-14900 | 13.5 KH/s | 160 W | $16.59 |
| 18 | Intel Core i9-13900 | 13 KH/s | 150 W | $15.98 |
How to start mining on the Ryzen 9 3900X
- Sign up at flowhash.pro and get a key in your dashboard.
- Download FlowHash for Windows and enter the key.
- Press one button — the Ryzen 9 3900X starts mining Monero, and income accumulates on your dashboard balance.
Estimate before the FlowHash service fee. Coin prices and network difficulty change, so actual income may differ; the figures on this page update automatically at the current rate.
Useful guides
Ryzen 9 3900X mining FAQ
How much does the Ryzen 9 3900X earn mining per month?
At the rate of October 25, 2026 the AMD Ryzen 9 3900X earns about $16.59 per month ($0.55 per day) before electricity and the service fee. The figures on this page update at the current rate.
How much electricity does the Ryzen 9 3900X use while mining?
About 130 W — that is 3.12 kWh per day and 93.6 kWh per month.
At what electricity rate is mining on the Ryzen 9 3900X profitable?
Income covers electricity at rates up to $0.18 per kWh. For example, at $0.10 per kWh the net profit is about $7.23 per month.
Which coin does the Ryzen 9 3900X mine?
Monero (XMR) on the RandomX algorithm, designed for CPUs. In FlowHash the miner and pool are already configured, and the CPU can run together with the GPU.