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Performance Stats
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Cards tested
Average Sequential Read Speed
Average Sequential Write Speed
Average Random Read Speed
Average Random Write Speed
= Below 50th percentile = 50th to 75th percentile = Above 75th percentile
Endurance Stats
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Cards currently in testing
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Cards completed testing
Average Rounds Completed
Average Time in Testing
Time to First FailureThe number of read/write cycles completed before either (a) the first error that prevented the data from being read back, or (b) the first instance of a data mismatch (excluding instances where device mangling was confirmed). This does not include any cards that have not yet experienced their first error. While well-made cards (especially industrial-grade cards) tend to experience their first error later, I think that at least some of these errors may be due to issues with the card readers or the USB stack — therefore, I think that the "Time to 0.1% Failure" metric is a better indicator of a card's reliability.
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Cards experienced first failure
Average Time to First Failure
Time to 0.1% FailureThe number of read/write cycles completed before 0.1% of the sectors on the card have been flagged as "bad". Sectors are flagged as "bad" if (a) an error occurs that prevents the data from being read back, or (b) if the data read back does not match the data originally written (and is not a device mangling error). This does not include any cards that have not yet reached the 0.1% failure threshold. This threshold was arbitrarily chosen, but is intended to reflect the point where a user would be likely notice that something was wrong with the card.
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Cards reached 0.1% failure
Average Time to 0.1% Failure
Time to 1% FailureThe number of read/write cycles completed before 1% of the sectors on the card have been flagged as "bad". Sectors are flagged as "bad" if (a) an error occurs that prevents the data from being read back, or (b) if the data read back does not match the data originally written (and is not a device mangling error). This does not include any cards that have not yet reached the 1% failure threshold.
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Cards reached 1% failure
Average Time to 1% Failure
Time to 10% Failure
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Cards reached 10% failure
Average Time to 10% Failure
Time to 25% Failure
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Cards reached 25% failure
Average time to 25% failure
Time to 50% failure
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Cards reached 50% failure
Average Time to 50% Failure
= Below 50th percentile = 50th to 75th percentile = Above 75th percentile
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