If your project does not need the Pi 5's faster CPU and I/O, the Raspberry Pi 4 8GB is still the better buy in 2026 — it costs less than the new high-memory Pi 5 SKU and runs home servers, Pi-hole, retro front-ends, and light containers without breaking a sweat. Buy the Pi 5 16GB only if you genuinely need the headroom for many concurrent services or heavier workloads.
In brief — 2026-05-27 · A new higher-memory Raspberry Pi 5 16GB SKU has shipped, pushing the lineup's memory ceiling up. For owners and shoppers, the more interesting effect is downstream: it repositions the Raspberry Pi 4 Model B 8GB as the value board for home-lab, retro, and learning projects that never needed the Pi 5's extra speed.
What happened
Raspberry Pi has added a 16GB memory option to the Pi 5 family, doubling the previous practical ceiling for the board. The headline is the memory, but the more consequential change for most builders is what it does to the rest of the lineup. Every time the flagship moves up, the previous-generation board slides further into value territory — and the Pi 4 8GB, already a mature and well-supported platform, now sits at a price that makes it the obvious default for single-purpose projects.
The Pi 5 itself remains the faster board on every axis: a quicker CPU, faster I/O, PCIe connectivity for NVMe via a HAT, and now up to 16GB of RAM for workloads that genuinely use it. None of that is news to anyone who has followed the platform. What is worth saying plainly is that the Pi 4 8GB did not get slower the day the 16GB Pi 5 shipped. For a huge share of the projects people actually build on a single-board computer, the Pi 4 8GB was already enough, and now it is enough and cheaper relative to the top of the range.
Why it matters
For home-lab, retro, and light-AI builders choosing a board on a budget, the practical question is not "which board is fastest" but "which board is enough for what I am building, at the lowest price." A higher-memory flagship widens the gap between "the most board you can buy" and "the right board for the job" — and for most jobs, the right board is the cheaper one.
Consider the typical single-board workloads: a Pi-hole network-wide ad blocker, a small home web server, a Home Assistant hub, a retro-emulation front-end, a print server, or a handful of lightweight Docker containers. None of these are CPU-bound or memory-starved on a Pi 4 8GB. The board has been running exactly these tasks reliably for years, with a software and accessory ecosystem so mature that nearly every tutorial, case, and HAT you find online assumes it. Buying the newest, fastest board for a job the older one already does well is paying for headroom you will never touch.
The flip side is real too. If you are building a multi-service home lab where several containers, in-memory caches, and a dashboard all run at once, the Pi 5's faster CPU and 16GB of RAM remove ceilings the Pi 4 would hit. The decision is not "old versus new" — it is "match the board to the project."
Spec comparison: Pi 4 8GB vs Pi 5 16GB
| Spec | Raspberry Pi 4 Model B 8GB | Raspberry Pi 5 16GB |
|---|---|---|
| CPU | Quad-core Cortex-A72 @ 1.8GHz | Quad-core Cortex-A76 (faster) |
| Memory | 8GB LPDDR4 | 16GB LPDDR4X |
| Storage | microSD, USB | microSD, USB, PCIe NVMe via HAT |
| Power profile | Lower, simpler | Higher, needs the newer supply |
| Ecosystem maturity | Very mature | Mature, growing |
| Best for | Single-purpose appliances, retro, learning | Multi-service labs, heavier workloads |
| Relative price | Lower | Higher |
The table makes the tradeoff concrete. The Pi 5 wins every performance line; the Pi 4 8GB wins on price and on the sheer depth of its accessory and tutorial ecosystem. For a board that will run one job in a corner of your network, those two advantages often matter more than raw speed.
Who should buy which?
Buy the Pi 4 8GB if you are building a single appliance — an ad blocker, a media-server front-end, a retro console, a learning project — or you want the cheapest reliable board with the broadest tutorial coverage. It is the safe default for a first SBC and for any project that has worked fine on a Pi 4 for years.
Buy the Pi 5 16GB if you are running a multi-service home lab, want PCIe NVMe storage, plan heavier or future workloads, or simply want the longest support runway from a board you are buying today. The extra CPU speed and memory are real and worth it when the project uses them.
A useful rule of thumb: if you can name the one thing the board will do, buy the Pi 4 8GB. If you are listing several things it will do at once, look at the Pi 5.
Can either Pi run local LLMs?
Both boards can run very small quantized language models, but neither is a substitute for a GPU-equipped machine. Inference on a Pi is CPU-bound and slow — fine for tiny models, experimentation, and learning how local inference works, but not for a responsive everyday assistant. The Pi 5's faster CPU and larger memory help, and 16GB lets you load a slightly larger quantized model, yet you are still measuring tokens per second in single digits for anything non-trivial. Builders who want real local-LLM throughput pair a desktop GPU for the heavy lifting and use the Pi as an always-on controller, orchestration node, or API front-end in the same lab. In that division of labor, the cheaper Pi 4 8GB is often the better fit — it is the coordinator, not the inference engine.
Do Pi 4 accessories work with the Pi 5?
Some do, many do not, and it is worth checking before you assume. The Pi 5 changed its power delivery, added an active-cooling profile, and shifted some connector positions, so cases, fans, and power supplies frequently need the model-specific version. HATs and USB peripherals generally carry over, but always confirm explicit Pi 5 support on the listing. This compatibility friction is another quiet point in the Pi 4 8GB's favor for anyone who already owns a drawer of Pi 4 cases, coolers, and supplies — sticking with the Pi 4 means your existing accessories just work.
For project peripherals, the picture is friendlier on both boards. A USB or Bluetooth controller like the 8BitDo Sn30 Pro pairs with either for a retro-emulation front-end, and if you do step up to a Pi 5 with an NVMe HAT, a drive such as the WD Blue SN550 1TB NVMe gives it fast, reliable storage that a microSD card cannot match for a busy home server.
What the Pi 4 8GB still does better
It is easy to assume the newer board wins everything, so it is worth naming where the Pi 4 8GB genuinely comes out ahead in 2026. Price is the obvious one — it costs less, and for a single-purpose appliance that gap is pure savings. Ecosystem maturity is the quieter advantage: years of tutorials, ready-made OS images, cases, and HATs all assume the Pi 4, so when something goes wrong, the answer is almost certainly already written up somewhere. Power and cooling simplicity matter too — the Pi 4 runs cool enough for a passive case in most roles, while the Pi 5 leans on active cooling under load. And accessory reuse: if you already own Pi 4 cases, supplies, and coolers, staying on the Pi 4 means none of it goes in a drawer. For a buyer optimizing cost, simplicity, and "it just works," the older board is not a compromise — it is the correct tool for a large class of projects.
Gotchas to watch for
- Power supply mismatch: The Pi 5 wants its newer, higher-output supply; reusing a Pi 4 adapter can cause under-voltage warnings and instability.
- Cooling: The Pi 5 runs hotter under load and benefits from active cooling far more than a Pi 4 in a passive case.
- microSD bottleneck: On either board, a slow microSD card is the most common cause of "my Pi feels sluggish" — use a quality card or, on the Pi 5, NVMe.
- Buying memory you won't use: 16GB is genuinely useful only for multi-service or memory-heavy workloads; for a single appliance it sits idle.
Three real projects and which board fits
Abstract advice is easy to ignore, so here are three concrete builds and the right board for each.
Project 1 — Pi-hole network ad blocker. This is a featherweight DNS service that idles most of the time. A Pi 4 8GB is wild overkill on memory and perfect on price; it will run Pi-hole for years untouched. Buying a Pi 5 16GB for this is paying for 15.9GB of RAM you will never address.
Project 2 — Retro-emulation front-end in the living room. Emulation up to the 32-bit and early-3D era runs comfortably on a Pi 4 8GB, and the mature ecosystem means cases, controllers, and software images are everywhere. Pair it with a 8BitDo Sn30 Pro controller and you have a tidy, cheap retro box. The Pi 5 helps only if you push into heavier, later-era emulation that wants more CPU.
Project 3 — Multi-service home lab. Running Home Assistant, a reverse proxy, a small database, and a few containers all at once is exactly where 16GB and the faster CPU earn their price. Add an NVMe HAT with a drive like the WD Blue SN550 1TB for fast, reliable storage, and the Pi 5 16GB becomes a genuinely capable little server. This is the project that justifies the upgrade.
Power and running cost — the real numbers
| Board | Idle draw | Load draw | Always-on cost driver |
|---|---|---|---|
| Pi 4 8GB | ~3–4W | ~6–7W | Lowest; sips power 24/7 |
| Pi 5 16GB | ~4–5W | ~9–12W | Higher under load; wants active cooling |
Both boards are cheap to run around the clock — single-digit watts means pennies per month on electricity. The Pi 5 draws more under load and benefits far more from active cooling, so for a fanless appliance tucked behind a TV or in a closet, the Pi 4's lower, simpler power profile is a quiet advantage. For a busy server that earns its keep, the Pi 5's higher draw is a non-issue.
A quick buying checklist
Before you click buy, run through these questions to land on the right board:
- Can I name the one job this board will do? If yes, the Pi 4 8GB almost certainly handles it for less money.
- Will several services run at once? If yes, the Pi 5's faster CPU and 16GB earn their price.
- Do I need PCIe NVMe storage? Only the Pi 5 offers it via a HAT — relevant for busy servers, irrelevant for appliances.
- Do I already own Pi 4 accessories? Staying on the Pi 4 keeps your cases, supplies, and coolers in service.
- Is the longest possible support runway important? Buying the newer board today maximizes years of future updates.
Answer those honestly and the choice usually makes itself. The trap to avoid is buying the newest, biggest board reflexively when the project never needed it — that is money spent on idle headroom rather than capability you will use.
The source
The lineup and product details come straight from Raspberry Pi: see the Raspberry Pi news page for announcements and the official Raspberry Pi 4 Model B and Raspberry Pi 5 product pages for full specifications and accessory compatibility.
Related guides
Citations and sources
- Raspberry Pi — News — official announcements for the lineup.
- Raspberry Pi 4 Model B product page — Pi 4 specifications.
- Raspberry Pi 5 product page — Pi 5 specifications and accessory compatibility.
