What are the differences: QLC vs. SLC vs. MLC vs. TLC?
有何分別：QLC vs. SLC vs. MLC vs. TLC？
QLC flash is the latest in a long trend of squeezing more bits per cell within a NAND flash device. Here’s a brief overview of how the technology has evolved over time:
Single-level cell (SLC) flash: One bit per cell, two possible voltage states
Multi-level cell (MLC) flash: Two bits per cell, four possible voltage states
Triple-level cell (TLC) flash: Three bits per cell, eight possible voltage states
Quad-level cell (QLC) flash: Four bits per cell, 16 possible voltage states
QLC 快閃是一種最新趨勢技術，能為 NAND 快閃儲存設備中的每個單元增加更多容量。以下概述此項技術的發展沿革：
單層單元（SLC）快閃：每個單元中儲存一個位元資料，共有 2 種電壓狀態
多層單元（MLC）快閃：每個單元中儲存兩個位元資料，共有 4 種電壓狀態
三層單元（TLC）快閃：每個單元中儲存三個位元資料，共有 8 種電壓狀態
四層單元（QLC）快閃：每個單元中儲存四個位元資料，共有 16 種電壓狀態