Notes Homelab / Power Consumption
This following are raw notes, often lacking explanations. I share them in the
hope of being useful to somebody and for future reference to myself. See
here for more
info.
Here are quick notes on power consumption while testing my homelab equipment.
| System | CPU | RAM | Storage | Other | Idle Power | Idle Monthly Energy | Max Power |
|---|---|---|---|---|---|---|---|
| Dell R720 | 2x E5-2697v2 | 128 GB DDR3 | 4x 1GbE | ||||
| Dell R730 | 2x E5-2699v4 | 160 GB DDR4-2133 (10x16GB) | 4x 600 GB SAS 6 Gbps (2.5") | 2x 10GbE + 2x 1GbE; 2x 750W PSU (1 connected) | 98 W | ~71 kWh | > 400 W |
Ideas to decrease power consumption:
- Move from smaller disks to fewer bigger disks.
- Upgrade from smaller RAM modules to bigger RAM modules (totalling to same capacity). Power consumption grows with amount of modules, not amount of capacity. P(2x16GB) > P(1x32GB).
- Double-check BIOS settings and OS support for power management.