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V30/U3 card has min write speed of 30MB/s, which is OK for 4K 30fps. A rating is mostly for applications (measure of IOPs).
For dashcam the biggest concern is endurance.
This Team Group 256GB microSDXC stands out for cheap high capacity, but the comments focus more on its limits and the listing risk than on the card itself. It is a U3 A1 card, so it should handle 4K 30fps and similar workloads, but it is not the faster A2 class and may be a poor fit for dashcams that need stronger sustained write performance. The Walmart listing also draws suspicion because it has no reviews, comes from a third party seller in China, and looks unusually cheap. A cautious pick if capacity matters more than speed or seller confidence.
Dashcam owners needing capacity only, because the card's U3 A1 speed is enough for 4K 30fps recording but not for higher-performance app use.
People comparing against microSD Express requirements, because this card is not the right format and a standard high-capacity card may be the better fit.
The listing is flagged as risky because it is sold by a third-party seller from China, has no reviews or ratings, and the store name looks unusual. The low price is also described as suspicious enough that it could be counterfeit or a scam.
It is a U3/V30 A1 card, so it meets the 30MB/s minimum write speed for 4K 30fps and can handle about 18.75MB/s needed for typical 4K 60fps bitrates. It may be a poor fit for dashcams that benefit from higher sustained write speed and endurance, especially compared with U3 A2 cards.
There are prior reports of premature failure and possible data corruption on some Team Group microSD cards, which is why some shoppers prefer other brands like Lexar or Samsung. The counterpoint is that isolated anecdotes do not establish brand-wide failure rates.
It can work for basic recording, but it is not ideal if you want the higher write speed and endurance typically preferred for dashcams. U3 A2 cards are specifically called out as working better in multiple dashcams.
Good deal for capacity only, as long as you don't need "normal" 130-150MB/sec read/write speed that (what I consider to be standard) U3 A2 rated cards can do. This U3 A1 card will not work for most dashcams due to it having roughly 1/3 the write speed of U3 A2 cards. The good old Samsung U3 A2 cards on Amazon (blue or green) work for every dashcam I've tried them in but they are still ridiculous price from all ths AI memory shortage BS.
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V30/U3 card has min write speed of 30MB/s, which is OK for 4K 30fps. A rating is mostly for applications (measure of IOPs).
For dashcam the biggest concern is endurance.
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For dashcam the biggest concern is endurance.
Community Reviews
This Team Group 256GB microSDXC stands out for cheap high capacity, but the comments focus more on its limits and the listing risk than on the card itself. It is a U3 A1 card, so it should handle 4K 30fps and similar workloads, but it is not the faster A2 class and may be a poor fit for dashcams that need stronger sustained write performance. The Walmart listing also draws suspicion because it has no reviews, comes from a third party seller in China, and looks unusually cheap. A cautious pick if capacity matters more than speed or seller confidence.
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For dashcam the biggest concern is endurance.
https://www.walmart.com/ip/Paris-...QoQAvD_BwE
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https://www.walmart.com/ip/Paris-...QoQAvD_BwE
PNY, might mean Paris New York...no idea, however even if so, that never appears to be used in their branding.
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