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The highest class, class 10, is a mere 10 MBps so any new card will meet this standard.

Speed Class: The oldest class system appears with a circle around the number.

The SD Association provides a detailed explanation by to keep it simple, here’s a brief list: When you’re shopping for a microSD card, whether it’s for Raspberry Pi, a phone, a camera or a Nintendo Switch, you’ll see as many as four different types of speed ratings listed, the first three of which measure minimum sequential write speed in MBps. MicroSD Speed Ratings and Types: What Do They Mean? It failed the Raspberry Pi Diagnostic test, thanks to really poor 4K random writes and overall sequential writes. This card was rated UHS 3, proving how meaningless these speed numbers are.

Fatty Dove: You wouldn’t expect much of a no-name brand like Fatty Dove so you won’t be disappointed.

It had the slowest app open times and also failed the Raspberry Pi Diagnostic Test. It was the slowest card to boot by far, taking more than twice as long as the fastest booting card on both the Pi 4 and Pi 3 B+, the Kingston Canvas React. Silicon Power Elite: This card costs a few dollars more than the Silicon Power 3D NAND and yet it performs so much worse.

Its app open and boot times were good, but its 4K random write speed and its sequential write speed were poor enough for it to flunk the Raspberry Pi Diagnostic test.

Lexar 633x: The second least expensive card we tested, the Lexar 633x isn’t all bad.

The Raspberry Pi Diagnostic tool gave the Performance Turbo a failing grade, thanks to an awful 4K random write speed of 0.8 MBps.

PNY Performance Turbo : The most expensive card we tested at $14.90 (UK price N/A), this card did not live up to its name or its price tag.

SanDisk Extreme: This card really was not bad, offering solid all-around performance for, at press time, a little more than $10 or £10.

Here are some other cards we tested and our brief take on each. Not every product deserves to be listed as one of the best Raspberry Pi microSD cards. Other Raspberry Pi microSD Cards We Tested

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On the Raspberry Pi 3 B+, the Evo Plus got really good application open times and slightly better 4K writes. The card had solid transfer rates in IOzone, though its 4K random writes were a little disappointing (rates were much higher in the Raspberry Pi Diagnostic test). It also booted in a speedy 24.7 seconds, only 0.7 seconds slower than the Kingston Canvas React. In our tests on the Raspberry Pi 4, the Samsung Evo Plus offered consistently strong application opens, coming within 0.2 to 0.3 seconds of the leader. Most of us probably aren’t worried about submerging a card in water, but it’s nice to know that if you waterproof your Raspberry Pi, the card will be fine too. Samsung backs the Evo Plus with a 10 year warranty and claims that the card can survive X-rays, magnetic radiation and even 72 hours in seawater. Selling for a modest $8.51 (£7.29) at publication time, the Samsung Evo Plus offers solid performance from a highly-trusted brand at a very reasonable price. If emulation is your goal then 32GB should be the bare minimum as PlayStation 1 CDROM images weigh in at around 700MB, so ten games can easily eat up around 25% of your micro SD storage.

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With every update and release slowly using more and more of your card, 8GB will soon become too small for a typical setup. You can claw back some space on your SD card, but with micro SD card prices being so low, now is the time to expand your storage.

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But for the full Raspberry Pi experience you will need the full install and that leaves you very little, if any, extra space on an 8GB card.

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Raspberry Pi OS can run on a card that’s as small as 8GB (see how to set up a Raspberry Pi) if used with the Lite version of the OS. We chose the 32GB capacity because it offers more than enough room for most use cases while not being appreciably more expensive than 16 or 8GB cards. But which microSD card should you buy for your Raspberry Pi? To help find the answer, we tested ten different 32GB cards on a Raspberry Pi 4, a Raspberry Pi 3 B+ and a Raspberry Pi Zero W to see which offers the best performance for the money.