YMTC QLC 3D NAND Flash

QLC (Quad-Level Cell) NAND stores 4 bits per cell using 16 voltage levels. It offers the highest density and lowest cost per GB but with lower endurance than TLC. Use QLC when: (1) Your workload is primarily read-heavy

(2) You need maximum capacity at lowest cost

(3) Write endurance requirements are moderate (1,000+ P/E cycles)

(4) Applications include cold storage, CDNs, and archival. QLC is not recommended for write-intensive applications like databases or boot drives.

Choose QLC for read-intensive applications requiring maximum capacity at lowest cost.

QLC vs TLC comparison: (1) Density - QLC offers 33% higher density (4 bits vs 3 bits per cell)

(2) Cost - QLC has lower cost per GB

(3) Endurance - QLC has 1,000+ P/E cycles vs 3,000-5,000 for TLC

(4) Write performance - QLC has slower write speeds due to more precise voltage programming

(5) Read performance - comparable read speeds for both. QLC is ideal for read-heavy workloads while TLC is better for mixed workloads. Choose based on your specific application requirements and workload characteristics.

QLC offers higher density and lower cost; TLC offers better endurance and write performance.