NanoPi NEO3 Plus: A $24 Pi Rival for Home Assistant?

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TL;DR

FriendlyElec's NanoPi NEO3 Plus is a tiny $24 board with LPDDR4 RAM, pitched as a Raspberry Pi competitor. For a Home Assistant host it's tempting, but the caveats matter more than the price.

Every few months a tiny single-board computer shows up, undercuts the Raspberry Pi on price, and the internet asks whether it's finally the Pi killer. FriendlyElec's NanoPi NEO3 Plus is the latest, a 48mm-square board with LPDDR4 memory for around $24. For a Home Assistant host, that price is genuinely tempting. But before you get excited, the caveats here matter more than the sticker.

If you're new to running your own hub, our what is Home Assistant overview explains why people bother self-hosting in the first place. This is about whether this specific board is the right place to do it.

What the NanoPi NEO3 Plus Actually Is

It's a small, cheap, low-power board built around a Rockchip RK3528A: four Cortex-A53 cores at 2.0 GHz, paired with 1 GB of LPDDR4 RAM. You boot from microSD, with an optional eMMC socket if you want faster, more durable storage. Connectivity is one Gigabit Ethernet port, one USB 3.0, a USB-C for power, and a 26-pin GPIO header. It's genuinely tiny at 48 by 48 mm, and it sips power.

Two things about that spec sheet decide everything, so I'll put them up front:

It's headless. There is no HDMI or any video output, so setup is done over SSH or a serial console, not by plugging in a monitor.
It has no onboard wireless. No Wi-Fi, no Bluetooth, no Thread radio, and no PCIe or NVMe. Ethernet is your only built-in network.

The Raspberry Pi Comparison Everyone Wants

Let's be honest about where it sits, because "Pi competitor" oversells it. The NEO3 Plus is not a Raspberry Pi 5 rival. The Pi 5's Cortex-A76 cores are far faster, and the Pi ships with 2 to 16 GB of RAM against this board's single gigabyte. In raw compute, the RK3528A is closer to a Raspberry Pi 3 or an early Pi 4 than to anything current.

What the NEO3 Plus genuinely beats the Pi 5 on is the boring, practical stuff: it's cheaper at around $24 versus roughly $50 for a 4 GB Pi 5, it's much smaller, and it draws far less power, which adds up on a device that runs 24/7. Gigabit Ethernet plus USB 3.0 make it a tidy little always-on network node. It's a different tool, not a better one.

One quick note on the spec chatter, because reseller listings muddy it. Some third-party Amazon pages advertise a 2 GB version and faster clocks, but the primary coverage from CNX Software and FriendlyElec's own listing put it at 1 GB LPDDR4 and a 2.0 GHz A53. When you're sizing a board for a always-on hub, that gap between the marketing and the datasheet is exactly the kind of thing worth checking before you buy. My take: trust the manufacturer's own spec sheet, not the reseller blurb, and plan around 1 GB of RAM rather than hoping for more.

Can It Host Home Assistant?

Yes, but with an asterisk you need to understand. The RK3528A and the NEO3 Plus are not on Home Assistant's list of officially supported boards, which means there is no Home Assistant OS image to flash the way there is for a Raspberry Pi, an ODROID, or a Home Assistant Green. FriendlyElec provides Debian, Ubuntu Core, OpenMediaVault, and an OpenWrt fork, so the realistic path is running Home Assistant Container or Supervised on Debian yourself. Our Home Assistant setup guide covers that container route.

The bigger practical limit is memory. Home Assistant recommends around 2 GB or more once you add integrations and add-ons, and this board gives you 1 GB. For a lean setup, a handful of integrations, MQTT, a couple of automations, that's workable. For a busy smart home stacked with add-ons, you'll feel the ceiling. And since there are no onboard radios, running Zigbee or Z-Wave means adding a USB coordinator stick, just as you would on a Pi.

So Should You Buy One?

Buy it if you want a very cheap, very low-power Linux box for a lean, container-based Home Assistant, a secondary node, or a network service like a DNS filter or an MQTT broker, and you're comfortable working over SSH. Skip it if you want the flash-an-image-and-go simplicity of Home Assistant OS, if you plan a heavy add-on stack, or if you need a monitor. The NEO3 Plus is a legitimately useful $24 board. It just isn't the Raspberry Pi 5 replacement the headline implies, and going in expecting that is how people end up disappointed by an otherwise fine little computer.

Frequently Asked Questions

Can the NanoPi NEO3 Plus run Home Assistant?

Not Home Assistant OS out of the box. The NEO3 Plus and its Rockchip RK3528A are not on Home Assistant's list of officially supported boards, so there's no ready-made HAOS image to flash. The realistic route is Home Assistant Container or Supervised running on Debian, which FriendlyElec does provide an image for. That works, but it's more hands-on than the flash-and- go experience a Raspberry Pi gives you.

Is the NanoPi NEO3 Plus better than a Raspberry Pi 5?

No, and it's not really trying to be. Its four Cortex-A53 cores at 2.0 GHz are closer to a Raspberry Pi 3 or early Pi 4 than to the Pi 5's much faster A76 cores, and it ships with just 1 GB of RAM against the Pi 5's 2 to 16 GB. Where it wins is price, size, and power draw. Think of it as a cheap, low-power little network node, not a desktop-class replacement.

What are the NanoPi NEO3 Plus specs?

It uses a Rockchip RK3528A (quad-core Cortex-A53 at 2.0 GHz), 1 GB LPDDR4 RAM, microSD boot with an optional eMMC socket, one Gigabit Ethernet port, one USB 3.0 and one USB-C for power, and a 26-pin GPIO header. It measures just 48 by 48 mm. Note it is headless, there is no HDMI or video output, and it has no onboard Wi-Fi, Bluetooth, or PCIe. It costs around $24.

Do I need a USB dongle for Zigbee or Z-Wave on the NEO3 Plus?

Yes. The board has no onboard radios beyond Ethernet, so to run Zigbee, Z-Wave, or Thread through Home Assistant you'd add a USB coordinator stick, the same as you would on a Raspberry Pi. It has a USB 3.0 and the GPIO header for expansion, but plan for at least one USB dongle if wireless protocols are part of your setup.