Monday, 20 August, 2018

Samsung Starts the Production of Industry’s First High-Capacity 4-Bit SSD

Samsung's new 4TB SSD Hardware Image Source Samsung
Sherri Watson | 08 August, 2018, 22:46

He added that 4-bit terabyte-SSD products will now rapidly spread throughout the entire market.

Samsung has included a three-year warranty with the QLC drive anyways.

This is all thanks to the more efficient production of 4-bit QLC NAND flash memory, while retaining the same performance level as a 3-bit SSD according to Samsung.

Though Samsung has high hopes for this new 4TB SSD.

Storing more bits per cell in QLC drives inevitably means lower performance and endurance when compared to TLC, but Samsung claims it has managed to maintain the performance level of existing TLC drives.

Samsung's foray into SSDs started in 2006 with its 1-bit single-level cell SSD which have 32GB capacity.

Typically, as data stored within a memory cell increases from three bits to four, the chip capacity per unit area would rise and the electrical charge (used to determine information from a sensor) would decrease by as much as 50%, making it considerably more hard to maintain a device's desired performance and speed.

But Sammy is touting read speeds of 540MB/s with sequential write speeds of 520MB/s, though more randomised data in-out speeds weren't mentioned.

And Samsung reckons this SSD tech will filter through the rest of the memory world, which could yield cheaper high-capacity SSDs for consumers.

Samsung hasn't released official pricing for the in-production drives, but its 4TB 860 Evo is now selling for over $1,000. Samsung hasn't announced specific pricing, but 4-bit cells should narrow the gap a little. They are also the first NVMe drives to use 4-bit QLC memory chips (Samsung will release 2.5-inch SATA drives that use QLC chips later this year). The 2 and 4 TB drives will still be a bit spendy, but the 1TB tier should offer a solid price advantage over current 1TB solid-state drives.