Toshiba offers new 1 TB solid state drive (SSD) using TLC flash
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February 17, 2016
Toshiba said earlier today it now offers new 1 TB solid state drive (SSD) using TLC flash aimed
at PCs, laptops and notebooks.
Designed with 15nm cell lithography, the SG-5 series comes in both M2 and 2.5-inch SSD form factor
and represent new product refreshes as Toshiba's existing 19nm SSD products are changed over to utilize
denser 15nm NAND technology for the next 6 to 12 months.
With SanDisk partnering Toshiba in the flash fabrication segment, and Western Digital acquiring SanDisk,
some of the HGST flash product line can also be expected to head over to 15nm as well, we
can safely assume.
Toshiba's new drives are intended for commercial notebook and desktop PCs, consumer upgrades and higher
end notebooks, with Toshiba betting on flash drives replacing disk drives soon.
The capacity points include 128 GB, 256 GB, 512 GB and 1 TB. All the drives use a 6 Gbit/s SATA
interface, Toshiba asserted us.
The new drives read at up to 545 MB per second and write at up to 388 MB per second. IOPS numbers have
not been provided and neither have any endurance numbers, however.
The products feature Quadruple Swing-By Code (QSBC) error-correction technology but we’re not told how
much this improves things.
The company says it is committed to accelerating the adoption of SSDs in client PCs and notebooks. That
provides an unwelcome context to Seagate’s recent 2 TB shingled client disk drive announcement
It seems pretty obvious now that if you can physically get 1 TB of Toshiba’s 15nm TLC (three bits per cell)
flash on an M2 card, then you could stick twice as much inside an SSD and match Seagate’s drive capacity, but
with vastly faster access speeds, naturally.
Imagine the next turn of Toshiba’s NAND technology to 3D NAND and we can easily see 2 TB, 3 TB and 4 TB
client SSDs coming soon.
And you can also add to that list PC and notebook disk drives that would be surpassed in capacity
as well as access speed.
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