Plex Server Power Consumption: How Much Does It Cost to Run?
A Plex server runs 24/7. That electricity cost adds up, and most people have no idea what they’re actually paying.
Typical Power Draw
- Intel N100 mini PC: 6–10W idle, 15–25W transcoding. Annual cost: $8–22
- Old desktop (i5/i7): 40–65W idle, 100–180W transcoding. Annual cost: $35–90
- NAS (Synology 4-bay): 20–30W idle, 35–50W active. Annual cost: $18–44
- Full tower server (Xeon, multiple drives): 80–150W idle, 200–400W transcoding. Annual cost: $70–350
- GPU transcoding: add 30–75W when the GPU is active (NVIDIA)
Calculation: Watts × 24 hours × 365 days ÷ 1000 = kWh/year × your rate ($0.10–0.15/kWh typical US)
What Uses the Most Power
- Hard drives: each spinning drive uses 5–10W. A server with 8 drives adds 40–80W to idle power
- CPU during transcoding: spikes to full power when converting video for remote users
- GPU: idle GPUs use 5–15W, active transcoding 30–75W
- RAM: minimal, 2–4W per stick
How to Reduce Power
- Direct play everything: if all your clients can direct play your media formats, the CPU stays idle and power stays low
- Use an efficient platform: an Intel N100 uses 1/10 the power of an old desktop
- SSD instead of HDD: SSDs use 0.5–2W vs 5–10W per drive. Significant savings with many drives
- Spin down idle drives: configure your OS to spin down drives after 15–30 minutes of inactivity
- Kill Watt meter: $20 device that shows actual power draw. Measure before optimizing
Best value: an Intel N100 mini PC ($150) running Plex costs about $1/month in electricity and handles 5–8 transcodes. Hard to beat that ratio.