Specs & Power Consumption: Beelink U59 Pro

Partially verified data Intel Celeron N5105

Beelink U59 Pro (Celeron N5105): estimated 7W idle and 35W under load, 2x 1GbE, up to 16 GB RAM. VESA mount behind your monitor.

Technical specifications

Idle estimate7 W

Under load estimate35 W

Estimated 24/7 average12.6 W

Yearly cost (€0.25/kWh)27.59 €

Average based on 80% of the time at idle and 20% under load, running 24/7: 110 kWh/year. Adjust the inputs to match your usage:

Energy: 110 kWh/year · Cost: 27.59 €/year (2.30 €/month)

Footprint 124 × 112 mm, 42 mm tall (about 0.58 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 1GbE.
Always-on Home Assistant: at about 7 W idle it is cheap to run 24/7.
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 Beelink U59 Pro.

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Dimensions: 124 × 112 × 42 mm — notebookcheck.net (measured review, checked on 2026-11-06)
Max RAM: 16 GB — liliputing.com (measured review, checked on 2026-11-06)
Network ports: 2x 1GbE — notebookcheck.net (measured review, checked on 2026-11-06)

Estimated from the CPU class and measurements of similar models: idle power, load power, VESA support. Always check the manufacturer's spec sheet.

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