Today we will have a closer look at some of the latest developments in QLC, in the form of Sabrent’s Rocket Q. Much like TLC a few years ago, denser and more cost-effective QLC is expected to replace its predecessor little by little in the years to come. High-end SSDs using TLC NAND have been thriving for years, and now the denser QLC (quad-level cell) NAND variety is starting to appear in the entry-level segment. While it’s clear that going from SLC (single-level cell) to MLC (multi-level cell) to TLC (triple-level cell) NAND, at increasingly small production processes, will negatively affect performance and longevity, the conclusion still turned out to be mostly wrong. SSDs will continue to improve by some metrics (notably density and cost per bit), but everything else about them is poised to get worse. Part of the depressing conclusion was that: It centered around the phenomenon that, as density increases and additional bits are added to each cell in the memory chips, performance, and endurance decreases. Just over 8 years ago I quoted this study, which outlined “The Bleak Future of NAND Flash Memory”. When using links on our site to make a purchase, we may earn an affiliate commission.
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June 2023
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