Best Raspberry Pi alternatives for a homelab: three SBC picks

Pick the ports, then pick the board

Your next Linux project needs the right connections more than a bigger spec sheet. Start with the software you want to run, then choose the board that gives it room to work.

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Buy the Libre Computer Sweet Potato 2 GB for a small Linux learning project when Fast Ethernet is enough. Buy the Radxa ROCK 3C 2 GB when you need Gigabit Ethernet and compact SSD expansion when 2 GB of RAM fits. Buy the Orange Pi 5 Plus 8 GB with power supply when dual 2.5 GbE, more memory and a full-length NVMe slot are part of the requirement.

Start with the application you want to run. A board with the right Linux image and connections is a better purchase than an impressive processor attached to unsupported software. These are alternatives for building an ARM machine, rather than automatic replacements for a particular Raspberry Pi accessory or installation.

Specifications from the makers; our own measurements are marked.

Compare the exact board configurations

The table uses the selected memory configuration, not the largest capacity advertised for the family. All three have onboard RAM: choose the capacity before buying.

Exact offer	Processor / installed RAM	Wired network	Storage expansion	Power / offer contents
Sweet Potato AML-S905X-CC-V2	Amlogic S905X / 2 GB DDR4	Fast Ethernet, 100 Mb/s	microSD; optional eMMC slim module	USB-C, 5 V / 3 A; board only
Radxa ROCK 3C	RK3566, four Cortex-A55 cores up to 1.6 GHz / 2 GB LPDDR4	One Gigabit Ethernet port	microSD; optional eMMC; M.2 2230 NVMe in archived board specification	USB-C, 5 V; board only, size supply for peripherals
Orange Pi 5 Plus	RK3588, four Cortex-A76 up to 2.4 GHz + four Cortex-A55 up to 1.8 GHz / 8 GB LPDDR4/4X	Two 2.5 GbE ports, RTL8125BG	microSD; optional eMMC; M.2 2280 NVMe, PCIe 3.0 x4	USB-C, 5 V / 4 A input; selected offer includes power supply

Specifications: Libre Computer’s announcement, current ROCK 3C documentation, its archived interface specification, and Orange Pi’s 5 Plus specification.

Compare installed RAM, expansion and software fit together. The Orange Pi selection includes a supply; the other two are board-only.

Sweet Potato: Linux learning with Fast Ethernet

Choose Sweet Potato when its documented boot platform, 2 GB of RAM and Fast Ethernet meet the project.

The important limit is Fast Ethernet. Do not mistake the familiar network socket for Gigabit Ethernet. Choose this board when the workload does not need a faster connection; skip it for a file server whose buying requirement is Gigabit transfers.

Libre’s announcement specifies DDR4, four USB Type-A ports, USB-C power and an eMMC slim-module connection. It also describes UEFI support. Follow the current board-specific firmware and image instructions when setting up boot storage; choose an image supported for this board.

Choose the 2 GB AML-S905X-CC-V2 deliberately. Le Potato, Sweet Potato and their accessory bundles are different purchases. Do not borrow a power connector, RAM type or included wireless adapter from a neighbouring listing. Buy this Sweet Potato offer when its memory and network limits match the project, rather than planning to fix them later with adapters.

ROCK 3C: the Gigabit pick

ROCK 3C supplies Gigabit Ethernet and its documented expansion options with 2 GB of installed memory.

Radxa documents Gigabit Ethernet, a USB 3 host port, microSD and eMMC support. Its archived exact-board specification also lists an M.2 2230 NVMe connection. Confirm that connector on the delivered revision before ordering the SSD. A full-length desktop drive is not interchangeable with a short module simply because both are called NVMe.

For wireless use, ask which revision the seller supplies. Radxa’s current documentation distinguishes V1.3 Wi-Fi 5 / Bluetooth 5.0 from V1.4 Wi-Fi 6 / Bluetooth 5.4. The selected listing establishes the model and RAM capacity, but does not settle that revision. Choose it here for the wired Gigabit connection.

PoE also needs an additional HAT; it is not included just because the Ethernet specification mentions support. Buy the ROCK 3C 2 GB for its Gigabit connection and expansion options, and check the memory budget before adding applications. If RAM is already the problem on paper, a faster network will not solve it.

Orange Pi 5 Plus: buy it for the ports and memory

Choose the Orange Pi 5 Plus 8 GB when the project needs dual 2.5 GbE and more RAM, together with its full-length NVMe storage path. Choosing the wireless router separately? Our Wi-Fi 7 router comparison covers ports, local management and VLAN choices.

Its extra memory and networking are unnecessary for a task that only needs a small Linux board.

Its M.2 2280 PCIe 3.0 x4 slot accepts the relevant NVMe drive format. The board also has two USB 3 and two USB 2 Type-A ports. The separate M.2 E-key 2230 slot is for a wireless module; it is not a second equivalent SSD slot. Wi-Fi support in the specification means an expansion path, not an included radio in this offer.

Two network ports are useful for a network-appliance experiment or separating two wired connections on a bench. Use an appliance image with board and driver support, then measure routing or encryption throughput if that is your project. Our switch and NIC buying guide helps match the rest of the wired path to the required speed.

The selected 8 GB plus power-supply configuration includes the supply. Add storage, cooling and a case, and match the included supply’s rating and plug to your setup. Choose the board for the connections and memory you need.

Check the software before ordering

Write down the actual application packages and container tags first. Docker’s multi-platform documentation explains how an image can contain architecture-specific variants. Check for the required linux/arm64 variant instead of assuming an image used on an x86 machine transfers unchanged. Adding Ethernet over USB? Compare 2.5GbE USB adapters and their driver requirements before choosing that route.

Check dependencies too. Match separately downloaded binaries, plug-ins and hardware drivers to ARM too. Docker describes emulation as a possible route, with performance costs for demanding work. Prefer a native supported path when choosing hardware for a regular workload.

For an appliance distribution, check the exact board’s current download and update instructions. A processor name in a support list is not the same as a maintained image for every board using that processor. Also check recovery instructions before changing boot firmware. Treat unsupported combinations as an experiment you chose, rather than a purchase requirement the seller has fulfilled.

Budget the complete machine and its recovery

Add boot storage, the appropriate power supply, cooling, a case and any required expansion modules to the hardware plan. Check that those parts fit together physically. Match any HAT’s electrical, driver and mechanical requirements to the board.

Size power for the attached devices. Radxa’s archived guide recommends 5 V / 5 A with an SSD, while its current board summary lists a 5 V / 2 A adapter. Confirm the guidance for the delivered revision and intended peripherals; size the supply for the board revision and peripherals together. Power-input ratings are also not average wall consumption. Use the monthly-cost method with a real measurement of the finished setup.

Before keeping a purchase, verify model, RAM, storage detection, negotiated network connection and cold-start behaviour under the intended system image. Exercise the actual workload within the return terms. Check temperatures and stability with the chosen cooling fitted, and keep a bootable recovery route before experimenting further.

For a storage project, put recovery ahead of expansion. An attached SSD or disk is not automatically an independent backup. The RAID, snapshots and backups guide explains the separate jobs those layers perform. Choose a chassis with suitable drive support if the requirement is a multi-disk NAS; do not assume a bare SBC package supplies it.

When a mini PC is the better buy

If the goal is running existing x86 software or reusing x86 VM images, read the mini-PC buying guide before spending money on ARM workarounds. It compares complete configurations and distinguishes fixed RAM from machines with memory slots.

Choose an SBC when its board-level interfaces, ARM environment or compact project format are part of the requirement. Choose a mini PC when a complete computer and a supported software path answer the question more directly. Sweet Potato fits small Linux learning projects; ROCK 3C supplies Gigabit Ethernet; Orange Pi 5 Plus supplies more memory and dual 2.5 GbE.

Building a Frigate recorder? Match the host and detector together with our Coral vs Hailo comparison: a Pi HAT, USB accelerator and Intel iGPU each take a different hardware path. For the video side of that Frigate build, choose a PoE camera and detect substream alongside the host.