Calculation factors
The foundation of the whole calculation: electricity and water per kilowatt-hour, the data centre, the GPU hour, hardware manufacturing.
Columns
| Unit | |||||
|---|---|---|---|---|---|
| Grid electricity1 kWh | 458 gCO2e | 1 kWh | Ember | published | |
| Water for electricity generation1 kWh | 0.004 to 17 L | 1 kWh | LBNL and 1 other | published | |
| PUE of the data centrefactor | × 1.10 | factor | Watershed and 6 others | convention | |
| On-site water1 kWh | 1.15 L | 1 kWh | Google and 3 others | published | |
| Manufacturing per GPU hour1 GPU hour | 35 gCO2e | 1 GPU hour | GreenIT | estimated | |
| H100 hour1 GPU hour | 410 gCO2e | 1 GPU hour | 900 Wh | Epoch AI | estimated |
| Manufacturing a server1 server | 1.31 tCO2e | 1 server | Nvidia | published | |
Calculated values depend on the location of the servers; published values are used as they stand. An empty source indicates a value calculated by the database from its factors.
