We can imagine an SSD as an efficiently run smart city. The NAND flash chips that store data are like land and buildings in the city, providing physical space for data storage. The SSD controller is like the city government and the traffic control center.

High-Bandwidth Flash is not an entirely new storage medium, but rather a clever architectural innovation. Its core idea is to combine the 3D NAND flash memory commonly found in our daily lives (used in phones and solid-state drives) with the advanced packaging and interconnection technology of HBM, which is commonly used in high-performance computing.

n 2025, artificial intelligence (AI) has moved beyond early-stage experimentation and initial rollout, entering a phase of broad application and large-scale industrial deployment. Whether it is the training of ultra-large-scale models or low-latency inference in business applications, AI’s usage scenarios and data volumes are growing explosively.

After nearly two years of price declines, the global NAND flash market is finally showing signs of recovery. According to the latest report from industry research firm TrendForce, NAND Flash contract prices are expected to rise by 5% to 10% in the fourth quarter of 2025

The most fundamental difference between external HDDs and external SSDs lies in their internal data storage methods, which determine almost all their characteristics. We can understand this with a simple analogy: an external HDD is like an old-fashioned vinyl record player, while an external SSD is like a large, high-speed USB flash drive.