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Two companies have announced 1 terabyte microSDXC cards at Mobile World Congress 2019:
Micron's fingernail-sized card uses 96-layer 3D NAND configured as QLC (4bits/cell) storage and delivers up to 100MB/s read and 95MB/s write burst performance helped by a dynamically sized SLC cache.
WD's SanDisk's UHS-I microSDXC, meanwhile, boasts "up to" speeds of 160MB/s reads and 90MB/s writes.
[...] Random IO is up to 4,000 IOPS for reads and 2,000 for writes for both Micron and SanDisk's kit.
The SanDisk 1 TB microSD card will launch at $450 in April, or $200 for a 512 GB version.
The Secure Digital 3.01 specification defines a maximum capacity of 2 TB (2048 GB) for SDXC and microSDXC cards. The Secure Digital 7.0 specification introduced the Secure Digital Ultra Capacity (SDUC) format with a maximum capacity of 128 TB.
Also at Tom's Hardware, The Verge.
See also: 512 GB of UFS 3.0 Storage: Western Digital iNAND MC EU511
Previously: SanDisk Announces a 400 GB MicroSD Card
Half a Terabyte in Your Smartphone? Yup. That's Possible Now
Samsung Announces Production of 1 Terabyte Universal Flash Storage for Smartphones
(Score: 2) by takyon on Wednesday February 27 2019, @06:22PM
Plenty of use.
First of all, 1 TB at 90 MB/s takes just 3h5m12s to fill. Even if it slowed down to 5 MB/s, it would still take less than 3 days to fill. Chances are good that you aren't going to have 1 TB of content just ready to plop on there. You will do it in batches.
You could put many thousands of books, PDFs, songs, etc. on there. Are you going to be deleting most of this content and adding more? Probably not. Just throw it on the card and you will be reading the content little by little.
microSD Express was announced so peak speeds could go up to nearly 1 GB/s for future cards. That speed will crash once the SLC cache is filled, but if you pace yourself, you can fill the thing fairly quickly.
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