Specs & Power Consumption: GMKtec NucBox K11
Verified data AMD Ryzen 9 8945HS
GMKtec NucBox K11 (Ryzen 9 8945HS): 9W idle and 77W under load (measured), 2x 2.5GbE, up to 96 GB RAM. VESA mount behind your monitor.
Technical specifications
| Brand | GMKtec |
|---|---|
| Model | NucBox K11 |
| CPU | AMD Ryzen 9 8945HS |
| Max RAM | 96 GB [source] |
| Network ports | 2x 2.5GbE [source] |
| Dimensions | 129 × 127 × 48 mm unverified* |
| VESA mount | Yes unverified* |
Power consumption & electricity cost
Idle [source]9 W
Under load [source]77 W
Estimated 24/7 average22.6 W
Yearly cost (€0.25/kWh)49.49 €
Average based on 80% of the time at idle and 20% under load, running 24/7: 198 kWh/year. Adjust the inputs to match your usage:
Energy: 198 kWh/year · Cost: 49.49 €/year
(4.12 €/month)
Mounting & usage guide
Mounting
- Footprint 129 × 127 mm, 48 mm tall (about 0.79 litres).
- Supports VESA mounting (75/100 mm bracket): attach it behind your monitor or under the desk to free up space. Keep the front USB ports and power button reachable.
- When VESA-mounted, keep the vents clear: leave at least 1-2 cm between the case and the monitor.
Cooling & heat
- Under load it reaches about 77 W and the fan becomes audible. For an always-on server, lower the power limit (TDP) in the BIOS to cut heat and noise.
- Clean dust from the vents every 6-12 months to keep temperatures and power draw low.
Recommended use cases
- Virtualised router (OPNsense VM on Proxmox) using the 2x 2.5GbE.
- Always-on Home Assistant: at about 9 W idle it is cheap to run 24/7.
- Proxmox VE with several VMs and LXC containers: up to 96 GB RAM.
- Heavy office work, light photo/video editing and intensive multitasking.
Check price & availability
See the current price and available configurations for GMKtec NucBox K11.
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Data sources
- Idle power: 9 W — notebookcheck.net (measured review, checked on 2026-11-06)
- Load power: 77 W — notebookcheck.net (measured review, checked on 2026-11-06)
- Max RAM: 96 GB — gmktec.com (official source, checked on 2026-11-06)
- Network ports: 2x 2.5GbE — gmktec.com (official source, checked on 2026-11-06)
Unverified values*: dimensions, VESA support.
* Value not verified by a reliable source: collected with an AI assistant and not yet confirmed by an official spec sheet or a measurement.
Real-world power draw varies with OS, RAM, drives, peripherals and BIOS settings.