How to improve cryptocurrency mining rig efficiency
Mining rig efficiency means fewer watts per terahash at the wall. Measure power and hashrate, then tune voltage, clocks, airflow and the power supply.
Vahe HakobyanEditor-in-chief
Updated Oct 6, 20263 min readFact-checked
On this page
- Efficiency is watts per terahash at the wall.
- Baseline power and hashrate show tuning gains.
- Undervolting and underclocking cut power with small hashrate loss.
- Dust and heat cause throttling; airflow helps.
Mining on a proof-of-work network rewards computational effort. The useful number is total wall power per hash, not chip speed alone. You need dedicated hardware to mine profitably in most cases.
What efficiency means and what you need
Efficiency means lower watts per terahash or joules per hash from the wall. That number includes the chip, the power supply, and the cooling. Before you change any setting, measure wall power and hashrate to set a baseline.
How to improve rig efficiency
Tuning is a sequence of small changes. Work on one setting at a time so you can see what caused a change. Undervolting and underclocking cut power with a small hashrate loss. Airflow and an efficient power supply matter too.
- 1Lower the voltageReduce voltage in small steps and test after each change. A crash or rejected share usually means you went too low.
- 2Reduce the core clockCut the core clock a little and check that hashrate holds steady. Many chips keep most hashrate at a lower clock.
- 3Clean the rigRemove dust from heatsinks, fans and filters. Keep cables from blocking airflow. Hot chips throttle and cut hashes for the same power.
- 4Match the power supplyUse an efficient unit and size it so the rig runs near its best load range. A unit far from that range wastes more energy.
- 5Retest power and hashrateAfter each change, measure watts at the wall and read hashrate again. Divide watts by hashrate to get watts per terahash.
After tuning: check gains and costs
After tuning, compare new watts per terahash with your electricity rate and hashrate. A mining calculator can turn those readings into a daily cost. Account for support equipment such as ventilation and electrical wiring.
- New watts at the wall.
- New hashrate.
- Electricity rate per kilowatt-hour.
- Cost of added fan, duct or power supply.
Frequently asked questions
Usually not, if you change voltage in small steps and test stability. Too low a voltage causes a crash or rejected share, not damage.
It can lower chip temperatures, but circulation and heat rejection equipment also draws power. Savings depend on the setup.
No. A basic wall power meter works. Either records watts at the wall.
