Micron vs SK Hynix

What Micron (MU) does

Micron makes memory chips that store data in electronic devices.
Its main products are DRAM (short term working memory for computers and servers) and NAND flash (longer term storage used in SSDs and phones).

These chips are used in everything from laptops and gaming consoles to data centers and AI servers, so demand rises and falls with the broader tech cycle.
In short, Micron is one of the key suppliers of the “digital storage” that lets modern devices and cloud services actually hold and access information.

What SK Hynix does

SK Hynix is another major producer of memory chips, similar to Micron but based in South Korea. It also focuses on DRAM and NAND, supplying big customers like smartphone makers, PC manufacturers and cloud providers.

SK Hynix has become especially important in high performance memory used for AI and graphics chips, which need very fast, high capacity memory.
So you can think of SK Hynix as a global factory for advanced memory components that sit next to processors and make modern computing fast and responsive.