Out of those, application performance class is the one you want. Even better is a real-world random read benchmark.
The capacity standard isn’t super helpful. Everything from 64GB to 2TB is SDXC, which is supported.
The Steam Deck only uses UHS-I. It’ll work with UHS-II and UHS-III cards, but they won’t have any meaningful benefits.
Pretty much any decent microSD Card in 2023 is class 10. If it’s anything else, that’s a red flag.
Higher UHS speed class and video speed class are probably better, but they’re measuring write performance. For playing games, random read performance is far more important.
![[PSA] SD Cards Overview](https://feddit.de/pictrs/image/9babe4f3-f9b4-409c-8dfe-50138f6eb578.jpeg){kind=link}
Which of these markings are most important for steam deck use?
Application performance class, launching games is a rendom workload so better random performance is much more important then sequential.
Out of those, application performance class is the one you want. Even better is a real-world random read benchmark.