The Raspberry Pi & its alternatives
Key takeaways The Raspberry Pi created and still anchors the SBC category — a family from the tiny Pi Zero 2 W up to the powerful Pi 5. Its real strength is the ecosystem — documentation, community, and add-on HATs, not just the hardware. Strong alternatives exist — Jetson for AI, Rock and Orange Pi for value, BeagleBone for industrial I/O — chosen by RAM, price, I/O, and community.
Once you know what a single-board computer is, the next question is which one to buy. The honest answer for most people starts with the Raspberry Pi — the board that defined this whole category — but it’s far from the only option. This lesson walks the Pi lineup, explains why its community matters more than its spec sheet, and introduces the rivals worth knowing so you can choose deliberately rather than by default.
The Raspberry Pi lineup
The Raspberry Pi is the board that made SBCs mainstream. Launched in 2012 as an educational tool, it became the reference point everyone else is measured against. Today it’s a family, not a single product:
- Pi Zero / Zero 2 W — the tiny, cheap members, about the size of a stick of gum. The Zero 2 W adds a faster quad-core chip and built-in Wi-Fi. Ideal when you need a small always-on computer for one light job and want to spend very little.
- Pi 4 — the workhorse of the previous generation, still widely used and supported, with RAM options up to 8 GB. Often the value pick when you don’t need the latest speed.
- Pi 5 — the current flagship as of 2026. Noticeably faster than the Pi 4, with better I/O and a PCIe connector that allows fast NVMe SSDs via an add-on board. The sensible default for new projects that need real performance.
- Compute Module (CM) — the same Pi brains in a stripped-down form meant to be slotted into your own custom carrier board. This is what companies use to build Pi-based products.
One important footnote: the Raspberry Pi Pico carries the brand but is not an SBC. It’s a microcontroller board — bare metal, no operating system — and belongs to the next module, What is a microcontroller?. Keep the distinction clear: a Pi 5 runs Linux; a Pico runs a single program.
The ecosystem is the real product
It’s tempting to compare SBCs purely on numbers — cores, gigahertz, gigabytes. But the Raspberry Pi’s biggest advantage isn’t on the spec sheet. It’s the ecosystem around it.
Because so many people use the Pi, almost every problem you’ll hit has already been solved and written up somewhere. The official Raspberry Pi OS is well maintained, drivers tend to just work, and there are thousands of tutorials, forum threads, and projects to copy from. When a sensor or camera says “works with Raspberry Pi,” that’s a real, tested guarantee.
The hardware ecosystem matters too. HATs (Hardware Attached on Top) are add-on boards that snap onto the Pi’s GPIO header — adding things like screens, motor drivers, real-time clocks, or SDR front ends. A rival board may have faster silicon, but if a HAT or driver you need only exists for the Pi, the Pi is the right choice. For something like a GopherTrunk scanner sitting at the antenna, the Pi’s broad support for USB SDR dongles and its huge troubleshooting community make it the path of least resistance.
The alternatives worth knowing
The Pi isn’t always the best fit. Several families compete hard, often beating it on raw specs or a particular strength:
- NVIDIA Jetson (Nano, Orin Nano, etc.) — the go-to when you need real AI and GPU power. Jetson boards include a capable GPU for running computer-vision and machine-learning models locally, far beyond what a plain Pi can do — at a higher price.
- Radxa Rock — a popular line that often offers more CPU and RAM per dollar than the equivalent Pi, with similar form factors.
- Orange Pi — a broad range of inexpensive boards, frequently undercutting the Pi on price, though with less polished software support.
- BeagleBone — long favored for industrial and real-time I/O, with many more GPIO pins and onboard real-time microcontrollers for precise timing.
- Odroid — known for higher-performance boards and good build quality, popular for home servers and emulation.
| Board | Rough price | Typical RAM | Standout strength |
|---|---|---|---|
| Pi Zero 2 W | ~$15 | 512 MB | Tiny, cheap, low power |
| Raspberry Pi 5 | ~$60–80 | 4–16 GB | Ecosystem + solid performance |
| NVIDIA Jetson Orin Nano | ~$250+ | 8 GB | On-board GPU for AI / vision |
| Radxa Rock 5 | ~$100+ | 4–32 GB | Performance per dollar |
| BeagleBone Black | ~$60 | 512 MB | Lots of I/O, real-time pins |
Prices and exact models shift over time; treat these as a feel for the landscape, not a current price list.
How to choose among them
With so many options, a short checklist keeps you honest. Weigh these against what your project actually needs:
- Community and software support — how easy will it be to find help and working drivers? This is where the Pi usually wins, and it often matters more than specs.
- Price — what fits your budget, especially if you’ll build more than one?
- RAM — enough headroom for your software and any future growth.
- I/O — does it have the pins, ports, camera connectors, or PCIe you need?
- AI acceleration — only relevant if you’re running vision or ML models; if so, lean Jetson.
A useful rule: pick the Raspberry Pi unless a clear, specific need pushes you elsewhere. If you need a local GPU, go Jetson. If you need maximum CPU per dollar, look at Rock or Odroid. If you need heavy industrial I/O, consider BeagleBone. Otherwise, the Pi’s support will save you more hours than a rival’s spec advantage will gain you.
Quick check: Which of these is NOT a single-board computer?
Recap
- The Raspberry Pi defined the category — a family from the tiny Pi Zero 2 W through the Pi 4 to the flagship Pi 5, plus the Compute Module for custom products.
- The Pico is a microcontroller, not an SBC — same brand, different kind of device, covered in the next module.
- The ecosystem is the real strength — documentation, community, drivers, and HATs often outweigh raw specs.
- Strong alternatives exist — Jetson for AI/GPU, Rock and Orange Pi for value, BeagleBone for industrial I/O, Odroid for performance.
- Choose by need — weigh community, price, RAM, I/O, and AI acceleration; default to the Pi unless a specific requirement points elsewhere.
Next up: how you actually write and run software on one of these boards. See Programming & running software on an SBC.
Frequently asked questions
Which Raspberry Pi should I buy?
For most projects in 2026 the Raspberry Pi 5 is the default — it’s fast, has plenty of RAM options, and runs almost anything. If you need something tiny or ultra-cheap for a single light job, the Pi Zero 2 W is a great pick. The Pi 4 is still perfectly capable and often cheaper. Match the board to the work rather than always buying the newest.
Is the Raspberry Pi Pico a single-board computer?
No — despite the Raspberry Pi name, the Pico is a microcontroller board, not an SBC. It runs bare-metal code with no operating system, like an Arduino, and costs only a few dollars. The confusion is common because it shares a brand. We cover boards like it in What is a microcontroller?.
What is the best alternative to a Raspberry Pi?
It depends on the job. For AI and computer vision, NVIDIA Jetson boards add a real GPU. For raw price-to-performance, Radxa Rock, Orange Pi, and Odroid boards often beat the Pi on paper. BeagleBone shines for industrial I/O. The Pi usually wins on software support and community, which often matters more than specs.