Shopping for a MicroSD card can be a little daunting. There are a ton of numbers to consider, a huge number of brands producing cards with similar-sounding features and names, and words like Pro, Extreme, and Express getting thrown around everywhere.
To make a long story short, unless you’re shooting a ton of photos and videos, and doing so even semiprofessionally where losing those shots might be detrimental to your professional reputation, you’re fine to buy a MicroSD card from any company whose name you’ve heard before. I prefer cards from PNY, SanDisk, and Lexar. Keep an eye out for the “U” symbol with a 3 inside, or a “V30” on the card for the best balance of speed and price. There are two exceptions to that suggestion:
If you’re shooting on a high-end camera, you should consider a V60 MicroSD card, if you can find one for a reasonable price. Some cameras have extra video features you can enable with a faster MicroSD card, so check your manual for more info on whether you need to upgrade.
If you’re buying for a Nintendo Switch 2, you’ll need an unfortunately more expensive MicroSD Express card. While you can transfer images and videos from your Switch 2 with most regular MicroSD cards, you’ll need an Express version to use it for actually running games.
Capacity
How much storage you need will largely depend on your needs, but there are a few things to consider when debating between 128 GB and 1 TB. The first is that MicroSD cards are tiny, and having to swap them out on the road can be a risky proposition. Costs tend to go up exponentially for 1 TB and 2 TB cards, but the gap between 256 GB and 512 GB isn’t that large, so I recommend sizing up a bit.
The other factor is that storage sizes are also separated into different standards, so you’ll want to make sure your device actually supports that larger card. Cards that are 64 GB are higher are technically “SDXC” for Extended Capacity, and are currently the most common type, and you should be able to use them in most modern situations.
Speed
If you’re interested in learning more about MicroSD speeds, we have a write-up with a full explanation of the different speeds and how they interact, but I’ll give you the quick rundown here too.
Each MicroSD card will have its actual minimum sequential write speed indicated by a letter and number on the card. The number indicates the speed in MB/s, with the letter representing the generation. A C10, U1, and V10 are all essentially the same speed, just written differently, so you’re likely to see multiple symbols printed on each card. I’d recommend checking out the SD Association’s page on speeds with a handy chart showing the full comparison.
In practice, you have to go out of your way to find a MicroSD card that’s slower than V30/U3 at most retailers, though you may find them included with some electronics that don’t require anything more substantial.