In daily use, TF cards and SD cards are the two most common types of memory cards, and they are often compared side by side. For most users, the difference between them seems to be only “one is big and one is small.”

South Korean media have recently reported that Samsung Electronics intends to raise the contract price of NAND flash memory by approximately 100% in the first quarter of 2026. This news has quickly attracted attention across the storage industry chain.

The TF card’s original formal name was TransFlash card, introduced by the storage giant SanDisk in 2004. It was designed to meet the urgent demand for small, expandable storage media in mobile phones at the time and quickly gained market attention due to its extremely small size.

IOPS stands for Input/Output Operations Per Second. It is a core performance metric that measures how many read/write commands a storage device can process per second. IOPS primarily measures the processing capability or response efficiency of a storage system, focusing on the frequency of operations, not the amount of data moved per operation.

According to the latest industry research from UBS, DDR contract prices in the fourth quarter of 2025 are expected to increase by about 35% quarter-on-quarter, far exceeding the range of typical seasonal price adjustments.