A high capacity micro SD card is an absolute must-have these days for the Nintendo Switch or Steam Deck, to say nothing of drones, action cams or even portable music players. To this end, you can get a 512GB SanDisk Ultra card for just £32, a good £15 off RRP and the cheapest it's been in months.
If you're used to 128GB or smaller cards, then a 512GB model can be a revelation. There's enough space here for a dozen AAA games, or nearly 100 hours of 4K 60fps HEVC video.
On the speed front, this SanDisk card has an A1 rating. The requirements needed for a card to garner an A1 rating are a sustained sequential write speed of 10MB/s, as well as 0.5K IOPS random writes and 1.5K IOPS random reads. This makes it slower than a A2 card, but for everyday tasks it's perfectly fine. However, as much as this SanDisk card has that rating, it's rated for speeds of up to 150MB/s, making this one of the nippiest cards out there, taking down the time it takes to access and transfer files by quite a lot.
The 512GB capacity on offer also means you'll be able to get a lot of data on here, which is essential if you want to keep multiple AAA games installed (or just the entire library of a retro games console with room to spare). 4K video footage can be quite large, especially at 60fps, so having a capacious card is great for use with drones, GoPros and other cameras too. 512GB cards have become a must-have for me with both my own usual Canon M50 camera as well as a GoPro I've used in the past, if you're someone like me who films in 4K a lot. I recently purchased two of these things for digital audio players, given the sheer amount of local music I still keep, and it easily fills just over half of one!
The key thing to also note is that these are not compatible with the new Nintendo Switch 2, as that uses faster Micro SD Express cards rather than the standard Micro SD cards we're recommended here. For those, you'll want to check out our list of the best Micro SD Express cards for Nintendo Switch 2 that we recently rounded up.
If you want to grab a speedy micro SD card for use in all sorts of devices for less, this Amazon deal on a 512GB SanDisk Ultra card is a steal.