Take the typical 8-gigabyte Dynamic Random Access Memory (DRAM) - the ones that are used in many of our modern devices. That's where a different type of memory comes in: High-bandwidth memory (HBM). In fact, Micron had better margins than SK hynix in the recent quarter, at 84.6% gross and 80.4% operating. Micron vs. SK hynix: Which Company Will Win The AI Memory Supercycle? SK hynix built a decade-long head start that's translating into record profits today, and it's not giving up that lead without a fight.