Please help Test my microSD card crystaldiskmark

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Hashiriya415

Limp Gawd
Joined
Mar 17, 2019
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I am having issue with a dash-cam and I thought to test the microSD card on my desktop to see if it could be faulty. I think I'm not understanding diskmark.
The card SanDisk 128GB High Endurance Video C10, U3, V30, 4K UHD - SDSQQNR-128G-GN6IA
Says its 100MB read and 40MB write.
I'm using Totu 11in1 USB C HUB connect to USB C gen2
I have used windows to transfer a 900MB file and its averaging 14MB write speed.
My first time running crystal disk info and I don't understand what these tests are.
If I'm getting 14MB write, that is way too low compared advertised 40MB write?
I have a Viofo a129 pro duo dash-cam and it records a couple of seconds and then it stops recording. I will know if the dash-cam is bad as soon as I the new one is delivered in a day. But until then I would like to know if my memory card is healthy and working as it should.
thank you very much
Sandisk 128gb b.jpg
Sandisk 128gb c.jpg
 
I have multiple times. And I tried to change multiple settings on the dash cam. Such as lowering the bit rate and resolution. It really seems like it's a dash cam issue and that's why I already have another one shipping. But until then I just want to see if this SD card is working properly.
 
Hashiriya415 said:
I have multiple times. And I tried to change multiple settings on the dash cam. Such as lowering the bit rate and resolution. It really seems like it's a dash cam issue and that's why I already have another one shipping. But until then I just want to see if this SD card is working properly.
Click to expand...
ok. then try reformatting it in windows and see if the speed improves. that the 40mb is most likely its max burst speed, it prob wont sustain it. you could try hdtune as it graphs its speed tests, see if it hits 40 at all.
 
Thank you. I have reformatted multiple times in windows as well. And I just tried the HD Tune. According to that its working great, but please let me know if I did the test correctly.
2020-08-05 113128.jpg
 
Turns out the microSD card was not good. When I got the brand new camera, the card would write a short video for few seconds and then nothing after that. Then I decided to buy another brand new memory card. The new card is working fine. It was a defective card but I'm still not sure how to test it properly and neither does sandisk, because their customer support looked at the screenshots also and said it's fine.
Does anyone know what is going on here?
 
Hashiriya415 said:
Turns out the microSD card was not good. When I got the brand new camera, the card would write a short video for few seconds and then nothing after that. Then I decided to buy another brand new memory card. The new card is working fine. It was a defective card but I'm still not sure how to test it properly and neither does sandisk, because their customer support looked at the screenshots also and said it's fine.
Does anyone know what is going on here?
Click to expand...
bum card, it happens. maybe a short or something, idk. at least you got it sorted.
 
Hashiriya415 said:
Turns out the microSD card was not good. When I got the brand new camera, the card would write a short video for few seconds and then nothing after that. Then I decided to buy another brand new memory card. The new card is working fine. It was a defective card but I'm still not sure how to test it properly and neither does sandisk, because their customer support looked at the screenshots also and said it's fine.
Does anyone know what is going on here?
Click to expand...
The age old argument of Benchmark vs Real-World usage
As for testing, performance and stress testing is what you want. You did the performance tests, and then stress testing uncovered a bad card. If you're still under warranty, Sandisk will likely replace the card if you tell them it can't sustain a write without error.

Keep in mind, some older cards can't keep up with newer cameras. That's probably NOT going to be the case with a dashcam though.
 
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