A/B Testing GPU Performance (Annual) Calculator Examples
Worked examples showing how GPU performance, efficiency, annual kWh use, and electricity costs compare.
These examples use matched benchmark scores and typical workload power draw. They show why annual electricity savings can be small for light use but more meaningful for long-running workloads.
Gaming PC used on weekends
A gamer uses the same workload for 3 hours on 104 days per year at $0.20 per kWh.
Input Summary
GPU A / GPU B scores
15,000 / 18,000 points
GPU A / GPU B power
180 W / 170 W
Annual hours
312 hours
Electricity rate
$0.20 per kWh
Calculation Breakdown
- 1GPU A cost(180 / 1000) * 312 * 0.20$11.23
- 2GPU B cost(170 / 1000) * 312 * 0.20$10.61
- 3Performance change((18000 - 15000) / 15000) * 10020.0%
Result Summary
Performance change
20.0%
A/B Testing GPU Performance (Annual) Calculator
GPU B is 20.0% faster and saves about $0.62 per year in GPU electricity costs.
Daily creative workstation
A design workload runs 6 hours per day for 240 days at $0.18 per kWh.
Input Summary
GPU A / GPU B scores
22,000 / 29,000 points
GPU A / GPU B power
280 W / 230 W
Annual hours
1,440 hours
Electricity rate
$0.18 per kWh
Calculation Breakdown
- 1GPU A cost(280 / 1000) * 1440 * 0.18$72.58
- 2GPU B cost(230 / 1000) * 1440 * 0.18$59.62
- 3Efficiency change(((29000 / 230) - (22000 / 280)) / (22000 / 280)) * 10060.4%
Result Summary
Efficiency change
60.4%
A/B Testing GPU Performance (Annual) Calculator
GPU B is 31.8% faster, has 60.4% better performance per watt, and saves about $12.96 annually.
High-runtime rendering workload
A rendering task runs 12 hours per day for 300 days at $0.30 per kWh.
Input Summary
GPU A / GPU B scores
40,000 / 42,000 points
GPU A / GPU B power
420 W / 300 W
Annual hours
3,600 hours
Electricity rate
$0.30 per kWh
Calculation Breakdown
- 1GPU A annual energy and cost(420 / 1000) * 3600; 1512 * 0.301,512 kWh; $453.60
- 2GPU B annual energy and cost(300 / 1000) * 3600; 1080 * 0.301,080 kWh; $324.00
- 3Savings and performance453.60 - 324.00; ((42000 - 40000) / 40000) * 100$129.60; 5.0% faster
Result Summary
Savings and performance
$129.60; 5.0% faster
A/B Testing GPU Performance (Annual) Calculator
GPU B is 5.0% faster and saves an estimated $129.60 per year in GPU electricity costs.
How to Read Your Results
A positive performance change means GPU B scored higher than GPU A in the matched benchmark.
A positive performance-per-watt change means GPU B produced more benchmark points for each watt used.
A positive annual cost savings result means GPU B has the lower estimated GPU-only electricity cost.
Annual cost results scale directly with runtime and the electricity rate.
Use the same workload conditions for benchmark and power inputs to keep the comparison meaningful.
Assumptions & Important Notes
- Power draw is typical for the workload rather than a maximum specification.
- Both GPUs run for the same annual hours.
- Electricity cost is expressed in currency per kWh.
- Costs exclude other computer components and power-supply losses.
Related Examples
Frequently Asked Questions
Why is the annual saving much larger in the rendering example?
The workload runs for 3,600 hours and has a 120 W power difference, so the kWh difference accumulates over the year.
Can GPU B be slower but still have better performance per watt?
Yes. A lower benchmark score can still be more efficient if power draw falls by a larger percentage.
Should I use gaming power draw for a rendering comparison?
No. Use power draw measured in the workload you want to compare whenever possible.
Do these examples include monitor electricity use?
No. They cover the entered GPU power draw only.
Ready to calculate your own result?
Use the live calculator with your own inputs, timing, and preferences.