NAND flash is an electronic medium used to store data, and its core feature is non-volatility. This means that even when power is completely lost, the data can still be preserved for a long time. This is very different from the computer’s RAM, which clears all data once power is cut.

Phison Electronics’ CEO recently warned in an interview with foreign media that NAND flash memory may face a long-term shortage over the next decade. This is not merely a short-term price fluctuation — it may signal a structural imbalance in the entire semiconductor storage ecosystem.

Although SSD & RAM both sound related to “storage,” they play completely different roles, and many people easily confuse them. This article will explain the core differences between SSD and RAM in the most understandable way, how they work together, and help you make informed choices based on your needs.

An efficient controller chip requires a capable assistant to help manage and schedule data quickly, thereby improving overall performance and extending lifespan. This key role is played by the DRAM cache.