Understanding GPU Mining Returns
Ethereum GPU mining once rewarded miners for securing the proof of work chain. Today, Ethereum mainnet uses proof of stake. A GPU calculator still helps with archived projects, forked Ethash networks, and hardware planning. It turns many small inputs into a clear daily, monthly, and yearly view.
Why Hash Rate Matters
Hash rate is the speed of your cards. A higher value gives a larger share of expected blocks. The calculator multiplies the hash rate per card by the number of cards. It then reduces that figure by stale shares and downtime. This gives an effective rate, not only a best case rate.
Power Cost and Efficiency
Mining profit can disappear through electricity use. Each GPU has a watt rating. The rest of the rig also draws power. The tool adds both numbers and converts watts into kilowatt hours per day. That energy value is multiplied by your local power price. Hash per watt and daily energy cost show whether the rig is efficient.
Network Inputs
Revenue depends on the network side too. You can estimate with network hash rate, block time, and reward. You can also use raw difficulty when that data is available. Pool fees reduce rewards. Coin price converts mined coins into money. These values change quickly, so the calculator is best used for scenarios, not promises.
Using Results Wisely
The net profit line subtracts power, pool fees, stale losses, and maintenance. Payback time divides hardware cost by daily net profit. A negative payback means the rig does not recover its cost under the current assumptions. Break even electricity price shows the highest power rate the setup can afford.
Good Planning Habits
Run several cases before buying hardware. Test low, normal, and high coin prices. Change power cost for summer rates or backup power. Add maintenance for fans, risers, cleaning, and failed parts. Export results when you compare GPUs. Keep the example table nearby, then replace it with your local data. A calculator cannot remove market risk, but it can expose weak assumptions before money is spent. Store each run with date, coin price, and power rate. This makes later reviews easier when conditions move. Old assumptions should not guide new purchases alone.