Published: Wed, August 08, 2018
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Samsung is building a high-speed 4TB SSD for everyone

Samsung is building a high-speed 4TB SSD for everyone

'As we expand our line-up across consumer segments and to the enterprise, 4-bit terabyte-SSD products will rapidly spread throughout the entire market. Stack enough of those together, and you can get a lot of storage in the standard 2.5-inch SSD form factor at lower costs.

However, Samsung's 4-bit 4TB QLC SATA SSD maintains its performance levels at the same level as a 3-bit SSD, by using a 3-bit SSD controller and TurboWrite technology, according to the company. This makes it hard to maintain desired performance and speed. The so-called QLC quad-level cells pack more memory into the same space as previous 3-bit cells, while operating at the same speeds.

The hype surrounding recent 4-bit quad-level cell (QLC) NAND flash memory chip announcements has been that they will lead to bigger capacity and more affordable solid state drives.

When data stored inside a memory cell increases from three bits to four, the chip capacity per unit area rises and the electrical charge that's used to determine information from a sensor decreases by up to 50 percent.

The hope is that this jump to QLC will bring prices down thanks to more efficient production, thereby making terabyte-sized SSDs accessible to more consumers. The company is claiming performance numbers of 540MB/s read and 520MB/s write and a 3-year warranty.

The company also expects to provide M.2 NVMe SSDs for enterprises and start mass production of 4-bit 5th-generation V-NAND.

Samsung hasn't released official pricing for the in-production drives, but its 4TB 860 Evo is now selling for over $1,000.

Samsung is also planning to use its 4-bit V-NAND chip in microSD cards.

The Samsung 4TB 850 EVO SSD is now listed on with a £1,399.99 retail price (albeit discounted to £999.99 at present).

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