Best Raspberry Pi 3 Cases of 2026

Open the box and you get the thing most cases here leave out: a 5V 3A power supply, with a switch inline on the cable. That matters more than it sounds. A 3B+ needs a supply that holds 5V under load, and the spare phone charger in a drawer is the usual reason a new build misbehaves. There's also a 30mm fan and three aluminum heatsinks inside, which is the full cooling kit for a board that only runs warm.

The case is a stack of clear acrylic plates that bolt around the board, and we found the layering either charming or maddening depending on the day — the printed instructions take you through the layers in order, but lining up several plates at once takes some wiggling before the screws bite. Once it's together, the board is genuinely on display and the fan is quiet enough that we forgot it was running.

The job we didn't enjoy was threading a camera ribbon between the plates. There's room for it, but connect the camera before the stack goes together rather than after, and the whole thing stops being annoying. For a RetroPie box or a desk machine finished in one order, this is the least fuss we've had with a complete setup.

The lid comes off. That's the whole reason this case is here, and it matters more than a spec line suggests: the top cover lifts away to expose the GPIO header, the camera connector and the display connector without lifting the board out of its base. We moved a ribbon cable twice in one afternoon and never reached for a screwdriver.

Under the lid there's a 30mm fan and three heatsinks, and the fan can be wired for a slower or faster spin depending on which pins you choose — ours ran slow and we rarely noticed it. The ABS shell is matte black and plainer than the acrylic cases, which we preferred on a shelf, and it doesn't wrap the antenna in metal, so wireless range isn't a question.

The tax is small screws. The hardware comes in the bag along with a screwdriver and rubber feet, but the fan screws are tiny and there are enough of them that a magnetic driver earns its keep. On the fast setting the fan is audible across a quiet room, and in some it develops a buzz — if the Pi sits next to where you work, run it slow and let the heatsinks carry it.

Two pieces of clear ABS that press together, no fan to wire, no thermal paste to think about. It snaps around the board and stays put, and the port labels are molded into the plastic — a small thing we appreciated every time we plugged something into the back of a television.

What you get is protection rather than cooling. Two stick-on heatsinks cover the processor and the memory, the shell is open along the top, and the case adds no noise at all because there is nothing inside it that spins. For a board doing something undemanding, that's the right trade, and it costs about as little as a case here can.

The clear plastic is honest about all of that: it looks like a case that costs very little, and it will never be mistaken for the Flirc on a shelf. Screw the base to a wall or the back of a cabinet, though, and nobody sees it — which is how most of these end up living anyway.

It weighs more than you expect for something this small, and that heft is the point. The P252 is a two-piece aluminum box that closes around the board with four screws, and the top half sits down onto the chip through a thermal pad — the case is the cooler, with no fan, no wiring and no header pins to think about.

Two things this design gives you that a plastic shell doesn't. A GPIO ribbon leaves through its own opening, so the header isn't sealed behind a lid, and the microSD slot stays reachable without dismantling anything. Four thermal pads come in the box, enough to couple the processor and the memory chips to the shell.

We swapped a fan-cooled plastic case for this one and stopped thinking about temperature; for an always-on server, that's the whole argument. It stays quiet in the way only a fanless case can, because there is nothing in it to hear. Give it a little clear space rather than burying it under a pile of cables and it will keep doing it.

It looks like a NES. Grey shell, a molded cartridge slot on top, a little hinged flap across the front — the joke only lands with people old enough to get it, and those are exactly the people building a RetroPie box.

Inside there's a fan and four aluminum heatsinks, and the board drops in without much fuss; the cutouts line up and the shell closes in a few minutes. It kept a 3B+ comfortable through long sessions, which is most of what a case has to do.

The hinged top is the part that takes getting used to: it's stiff out of the box, and the first open feels like it might snap, so work it gently before the board goes in rather than after. Everything else is a small case that sits flat and does the one thing the black boxes here can't — it looks like it belongs under a television.

Open on every side is the design. Two clear acrylic plates sandwich the board with a fan hanging over the top, nothing is enclosed, air moves freely, and you can watch the activity light blink through the plastic.

The fan can sit above the top plate or underneath it, which is more flexibility than the rest of these offer: over the board it blows down across the heatsinks, and flipped it pulls air up and out. The kit includes a screwdriver and the heatsinks — three for a 3B+ or 3B, four for a Pi 4, because the cutouts serve both boards.

What an open frame doesn't do is protect. Dust settles on the board, there's nothing between a spilled drink and the GPIO pins, and it's the wrong choice beside a printer or in a house with cats. Nothing traps heat, which is the other half of the same bargain.

We like it best as a bench case — a Pi you're flashing, testing a HAT on, or running on a desk where seeing the board is half the point. Fit it to a 3B+ now and the same case takes a Pi 4 when you upgrade, which is a longer life than most of the plastic here will have.

There's no fan and no heatsink in the box, and that's the most honest thing about this case. It's an enclosure for a Pi with a light job — DNS filtering, a print server, a line into a home automation hub — and it doesn't pretend to be anything else.

Two molded halves press together around the board, with every port opening cut where you expect it and mounting holes in the base. The board stays off the desk, air moves through the slots along the top, and the plastic keeps fingers and loose screws away from the components.

It arrives with no instructions, which is fine, because there are two halves and only one way they go. Screwed to a wall or the back of a cabinet, it disappears entirely, which is the best thing a case this plain can do.

What we like is how little it asks: no wires, no pads to line up, no screws to lose. It's the plainest way to make a bare board safe, and the clear plastic shows just enough of the board to remind you there's a computer under there.