Specs & Power Consumption: GMKtec NucBox G9

Verified data Intel N150

GMKtec NucBox G9 (N150): 14W idle and 26W under load (measured), 2x 2.5GbE, up to 16 GB RAM. VESA mount behind your monitor.

Technical specifications

Idle [source]14 W

Under load [source]26 W

Estimated 24/7 average16.4 W

Yearly cost (€0.25/kWh)35.92 €

Average based on 80% of the time at idle and 20% under load, running 24/7: 144 kWh/year. Adjust the inputs to match your usage:

Energy: 144 kWh/year · Cost: 35.92 €/year (2.99 €/month)

Footprint 147 × 100 mm, 39 mm tall (about 0.57 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.

Active cooling: nearly silent at idle, the fan is audible under sustained load.
Clean dust from the vents every 6-12 months to keep temperatures and power draw low.

Virtualised router (OPNsense VM on Proxmox) using the 2x 2.5GbE.
Proxmox or Docker for a few light services (Pi-hole, Home Assistant, Jellyfin without heavy transcoding).
Office work, browsing, 4K streaming and a home-office workstation.

See the current price and available configurations for GMKtec NucBox G9.

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Idle power: 14 W — liliputing.com (measured review, checked on 2026-06-02)
Load power: 26 W — liliputing.com (measured review, checked on 2026-11-06)
Dimensions: 147 × 100 × 39 mm — liliputing.com (measured review, checked on 2026-11-06)
VESA support: Yes — liliputing.com (measured review, checked on 2026-11-06)
Max RAM: 16 GB — gmktec.com (official source, checked on 2026-11-06)
Network ports: 2x 2.5GbE — gmktec.com (official source, checked on 2026-11-06)

Real-world power draw varies with OS, RAM, drives, peripherals and BIOS settings.