Fighting Fit

Cardbench measures real-world SD card performance through the filesystem of a mounted card.

Run peak and sustained sequential read/write tests, simulate camera bursts using RAW and JPEG workloads, or verify available capacity. Each test can read back and verify its test data, helping identify unreliable storage and understand how a card performs under practical workloads.

Features:

  • Peak and sustained sequential speed tests

  • Camera burst simulation with configurable format, frame rate, shot count, and buffer size

  • RAW and JPEG workload presets for representative camera profiles

  • Available-capacity verification with a safety reserve

  • Read-back and content verification

  • SD card, reader, and hardware details where macOS makes them available

  • Live progress and per-stage results

  • JSON result export

  • Guided configuration and safety confirmations

  • Temporary test files that are removed when testing completes

Cardbench measures the complete storage path, including the card, reader, connection, filesystem, and current system conditions. Results are comparative filesystem measurements and may differ from manufacturer-rated maximum speeds.Privacy

Your data stays on your device. No data is sent to the cloud or used elsewhere.