What is Flash type?
Flash type (TLC vs QLC) and DRAM cache
How data is stored on the chips, and whether there's a memory buffer.
Short answer
QLC drives can slow to hard-drive speeds once their cache fills.
Flash type when buying a ssd, hard drive & memory card
How data is stored on the chips, and whether there's a memory buffer.
Why it matters: TLC with DRAM stays fast under load and lasts longer — best for a main drive.
Look for: QLC drives can slow to hard-drive speeds once their cache fills.
Full SSD, Hard Drive & Memory Card buying guide