However, we can infer a rating with a little bit of math.
Unfortunately, the endurance specifications for these cards are (probably intentionally) vague, only providing a set number of hours of video recording. SanDisk’s lineup of high-endurance memory cards are designed for use in very write-intensive workloads, such as constant video recording.
The packaging also includes a license key for a 1-year subscription to the RescuePRO data recovery software (although in all honesty, you’d be better off using the free PhotoRec software instead). The paper-and-plastic package includes a small blister pack that holds the microSD card itself and the full-size SD card adapter, without a carrying case (granted, the memory card is expected to stay inside the dashcam for most of its working life). The card’s packaging isn’t much different than SanDisk’s typical microSD card offerings. I purchased the 64-gigabyte model, the SDSQQNR-064G-G46A. The solution: high-endurance memory cards! These cards (at least in theory) use more durable MLC or even SLC NAND Flash, which can take many more write cycles. In fact, SanDisk specifically denounces this line of cards for use in continuous-recording applications. Not only does the card have to endure temperature extremes, the constant writes can burn through the Flash’s write cycles in short order. However, not all cards are created equal.Ĭheaper cards, like SanDisk’s Ultra lineup, use cheaper TLC (triple-level cell) NAND Flash that is ill-suited to the harsh working conditions of a dashcam.
Like any modern device, they generally use SD or microSD cards as their storage medium. UPDATE (July 19, 2020): I’ve analyzed a 128GB version of the High Endurance card, and it appears that SanDisk is using 3D TLC Flash.ĭashcams: they can be a crucial tool when reconstructing events in a vehicular incident, or a source of entertainment when watching compilations on YouTube.
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