Specs & Power Consumption: Radxa ROCK 5B
Partially verified data Rockchip RK3588
Radxa ROCK 5B (RK3588): estimated 3W idle and 15W under load, 1x 2.5GbE, up to 16 GB RAM. No VESA: alternative mounting tips.
Technical specifications
| Brand | Radxa |
|---|---|
| Model | ROCK 5B |
| CPU | Rockchip RK3588 |
| Max RAM | 16 GB [source] |
| Network ports | 1x 2.5GbE [source] |
| Dimensions | 100 × 72 × 20 mm estimate |
| VESA mount | No estimate |
Power consumption & electricity cost
Idle estimate3 W
Under load estimate15 W
Estimated 24/7 average5.4 W
Yearly cost (€0.25/kWh)11.83 €
Average based on 80% of the time at idle and 20% under load, running 24/7: 47 kWh/year. Adjust the inputs to match your usage:
Energy: 47 kWh/year · Cost: 11.83 €/year
(0.99 €/month)
Mounting & usage guide
Mounting
- Footprint 100 × 72 mm, 20 mm tall (about 0.14 litres).
- No VESA mount: place it on a shelf or a rack tray, or use a universal strap-style mini PC holder.
Cooling & heat
- Low-power ARM SoC: a passive heatsink or small fan keeps it cool even running 24/7.
- Clean dust from the vents every 6-12 months to keep temperatures and power draw low.
Recommended use cases
- Always-on Home Assistant: at about 3 W idle it is cheap to run 24/7.
- OpenWrt, Pi-hole, Home Assistant OS or small ultra-low-power home servers.
Check price & availability
See the current price and available configurations for Radxa ROCK 5B.
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Data sources
- Max RAM: 16 GB — docs.radxa.com (official source, checked on 2026-11-06)
- Network ports: 1x 2.5GbE — radxa.com (official source, checked on 2026-11-06)
Estimated from the CPU class and measurements of similar models: idle power, load power, dimensions, VESA support. Always check the manufacturer's spec sheet.
Real-world power draw varies with OS, RAM, drives, peripherals and BIOS settings.