SD Card Performance in CircuitPython #CircuitPython #AdafruitLearningSystem @Adafruit

This guide benchmarks SD card performance in CircuitPython across a range of boards, card tiers, and filesystems. The findings are straightforward: SDIO for bulk transfers, SPI for fast small writes. For max performance, pair a card over 32 GB (A2/U3 rated) with an exFAT filesystem.

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