Raspberry Pi

Purpose-built single-board computers for low-power always-on servers.

Raspberry Pi offers excellent power efficiency and is ideal for lightweight services.

Overview

Raspberry Pi devices are designed for low-power always-on operation, making them excellent home servers. They consume minimal power, are easy to set up, and have extensive community support.

Model Recommendations

Raspberry Pi 5 (8GB): Best choice for general hosting in 2026

2-3x faster than Pi 4
Supports NVMe storage via PCIe
USB 3.0 for fast external storage
Costs ~$80-90

Raspberry Pi 4 (8GB): Still capable option

Widely supported and documented
Good if found at discount
USB 3.0 for fast storage
Costs ~$55-65

Raspberry Pi Zero 2W: Single lightweight services only

Ultra low power (~0.8W idle)
Only for Pi-hole or similar
Costs ~$15
Limited to USB 2.0

What Fits on Pi 5 8GB

Lightweight services:

Pi-hole, AdGuard Home, Blocky
Home Assistant, MQTT, Zigbee2MQTT
Syncthing, Vaultwarden
Caddy, WireGuard
Uptime Kuma, ntfy

Medium services:

Audiobookshelf, Navidrome
Small Nextcloud instance
Small Postgres/MariaDB
Grafana, Prometheus, light Loki
Light k3s cluster

What doesn't fit:

Plex with hardware transcoding
Heavy AI/LLM workloads
Multiple virtual machines
Sustained compile workloads

Important Considerations

Storage:

SD cards fail in 8-14 months for 24/7 use
Boot from SSD instead for reliability
Only Pi 4 and Pi 5 have USB 3.0 for fast SSDs
NVMe requires HAT on Pi 5

Power consumption:

Pi 5: 3-5W idle, 8-12W under load
Pi 4: 2-6W idle, 6-7W under load
Pi Zero 2W: 0.8W idle, 2W under load
Monthly cost: $0.30-0.60 at $0.12/kWh

Networking:

Only Pi 4 and Pi 5 offer real gigabit Ethernet
Pi 3 and Zero 2W limited to 300 Mbps
Wi-Fi available but less stable than Ethernet

Complete Build Cost

Pi 5 8GB setup (~$210-260):

Pi 5 8GB: ~$80-90
NVMe SSD (256GB): ~$40
Active cooler: ~$10
Quality case (Argon ONE V5): ~$40-60
Power supply: ~$10
UPS HAT (optional): ~$30

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