Samsung claims its drive will be the "industry's first 4-bit consumer SSD", but we'll have to see about that. In 2010, it introduced its 2-bit multi-level cell with 512GB, while in 2012 it released the 3-bit triple-level cell which had 500GB storage but double the chip capacity of the previous model. If so, here's some good news from Samsung.
Samsung Electronics has confirmed capacities and performance for its planned family of quad-level cell (QLC) solid-state drives (SSDs), due to launch later this year, but is still silent on the most important part of the equation: price.
As the chip capacity per unit area rises from 3 to 4-bit, electric charge can decrease by as much as 50 percent.
And Samsung reckons this SSD tech will filter through the rest of the memory world, which could yield cheaper high-capacity SSDs for consumers. Pricing and exact availability have yet to be announced.
The new 4 TB drive is expected to be joined by 4-bit 1 TB, 2 TB and 4 TB 2.5-inch variants later in the year, with enterprise M.2 NVMe variants also in the pipe.
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"Samsung's new 4-bit SATA SSD will herald a massive move to terabyte-SSDs for consumers".
With the new 4-bit QLC SSD, Samsung has managed to produce hardware that has a sequential read speed of 540 MB/s and a sequential write speed of 520 MB/s. Longevity might still be a concern, however, as these 4TB SSDs only ship with a three-year warranty.
Samsung boasts that its QLC SSDs will improve efficiency for consumer computing, including in smartphone storage where the 1TB four-bit V-NAND chip will allow it to efficiently churn out 128GB memory cards for smartphones.
The Samsung 4TB 850 EVO SSD is now listed on Amazon.co.uk with a £1,399.99 retail price (albeit discounted to £999.99 at present).