Memory SD Cards speed comparisons

Mtz

Mtz

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Dash Cam
Viofo A229 Pro TeleQuad (the best dashcam in the world!)
For a dashcam a Class 4 SD Card (or MicroSD Card) is enough to ensure recording in good conditions.
In the following pictures I will show the speeds from my cards:

1. Fake Samsung from Aliexpress, 32GB real, fake class 10, but real Class 4. (about $12)
2. Real Kingston from Aliexpress, 32GB real, real Class 4.
3. Dashcam Smarti 3500HD 16GB MicroSD Card, Class 10, maybe Class 6.
4. Dashcam Itronics ITB-250HD 8GB SD Card, maybe Class 6.
5. Dashcam Livue ITB-250HD 8GB MicroSD Class 10.



Gallery.

enjoy,
Mtz
 
OK, tested with H2testw v1.4
8-)
Code: 
Warning: Only 31987 of 31988 MByte tested.
The media is likely to be defective.
1.8 GByte OK (3793856 sectors)
29.4 GByte DATA LOST (61715520 sectors)
Details:2.3 GByte overwritten (4914368 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
27.0 GByte corrupted (56801152 sectors)
77.4 MByte aliased memory (158528 sectors)
First error at offset: 0x0000000073c78000
Expected: 0x0000000073c78000
Found: 0x0000000000000000
H2testw version 1.3
So even windows is reporting 31.2GB (more than usually 29.3GB from real cards) and I can write files on the card until it is filled up, after 1.74GB the video files recorded on the card are "corrupted". In fact I think is nothing recorded in that files is just some junk which is just showing some size. I think is some trick in the card to show sizes.
Aliexpress frozen that seller account and I am waiting for my money back. :lol:
Finally if I can make the card usable for just 1.74GB i could think I got a free 1.74GB "Samsung" MicroSD Card. :P

But I will make some tests again and formatting the card.

enjoy,
Mtz
 
it's a very common problem in China, they use 1gb or 2gb of memory and they use some software to write a false file allocation table that reports a different memory size, this has been going on for years
 
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