![]() I cover which adapters are good and which should be avoided more comprehensively in my Raspberry Pi 4 USB Booting Post. The type of USB adapter you use (if you aren’t using a SD card) can have a big effect on performance. ![]() If you search for the model of your drive on you can compare your score with others and make sure the drive is performing correctly! Storage Adapter Performance Note If you want to verify your drive’s performance you may want to run my storage benchmark with: sudo curl | sudo bash The difference is tiny though, so you should pick whichever one is cheaper at the moment. The SanDisk Extreme A2* is barely edging out the SanDisk Extreme A1 variant* for the top spot. ![]() There’s no benefit on the Pi for A2 right now so get whichever is cheaper/available. The application class (A1) means random I/O speeds (very important when running an OS) have to meet a higher standard. The SanDisk Extreme A1-A2 SD card has the best scoring SD card on for years and is second in popularity only to the SanDisk Ultra (often included in combo kits).
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