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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.
- 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.
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