64GB or 128GB memory card
For dashcams with 2K resolution, it is recommended to choose a 64GB or 128GB memory card, which should be determined based on the frequency of use and the length of recording. The following is a detailed analysis:
1. Capacity selection basis
2K video file size: 1 minute of video takes up about 120MB–160MB, and the average value is 140MB.
64GB card (actually available about 59.5GB/59500MB) can record for about 7 hours.
128GB card (proportionally calculated about 119000MB) can record for about 14 hours.
Loop recording mechanism: The dashcam overwrites old files by default, so there is no need to worry about running out of capacity, but a larger capacity can retain key clips for a longer time.
2. Speed Class Requirements
Class 10 (UHS-I U1) or higher: Ensure smooth 2K video recording without stuttering or frame drops.
If your budget allows, choose an A2-rate card (such as Samsung Pro Endurance or SanDisk High Endurance) to improve stability.
