Micron was the first manufacturer to introduce a micro SD card with a storage capacity of 1.5 TB. For the model, simply called i400, Micron uses the current generation NAND flash memory with 176 storage levels. Other companies like Samsung, Kioxia, and Sandisk are likely to follow soon.
Micron is still keeping a low profile when it comes to the specs of the i400, but you can glean a few things from the logos on the memory card: The “I” is short for the UHS-I interface, which is basically up to 104 MB / s of high-volume official specification transfer. “U3” stands for UHS Video Speed Class 3 with a permanent write speed of at least 30MB / s for video recordings. With the App Performance Class 2 (A2), the memory card must achieve at least 4000 read IOPS and 2000 write IOPS for random access.
Many video recordings on a memory card
Micron intends the i400 primarily for surveillance cameras that are not supposed to constantly send their video recordings to the cloud or a network. The manufacturer promises a lifespan of five years with permanent description, but without backing this value with a transmission speed. Calculations of 10 to 26 Mbit / s are typical.
In the announcement, Micron advertises the ability to store 120 days of video material on the micro SD card. However, this only works with low image quality and a write volume of less than 2 Mbit / s.
Manufacturers such as security company Verkada are already receiving samples of the i400. Usually, memory cards with a business focus will sooner or later find their way into the retail trade as well – so far there have been micro SD cards with a capacity of up to 1TB.