TCK81
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It looks like there's another option for microSD cards geared towards surveillance. Western Digital now has WD Purple microSD Cards.
I couldn't find any information about the nand. I would hope so based upon the retail price.MLC Nand ?
WD Purple™ microSD cards feature exceptional endurance to ensure continuous recording for up to 2 years (For 64GB capacity based on recording 1080p @ 8Mbps)
In regards to which type of NAND the memory has, it’s MLC.
In regards to performance, the 1080p @ 26Mbps can include 2 ch-stereo, lots of motion and 60FPS is good for more consumer based video surveillance systems.
The endurance of the WD Purple microSD card is sufficient for surveillance video, which typically has lower bitrates due to less motion, lower frame rates, and lack of audio which is good for OEM type video systems.
8 Mbps is more typical for 1080p @ 30fps in the surveillance world. Therefore, when the total hours are calculated using the 1K P/E cycles, it comes to over 17,700 hours (or over two years) of video on a 64GB WD Purple microSD card.