K-Culture GlossaryHInfrastructure and chips
HBM (High Bandwidth Memory)
고대역폭 메모리
Ultra-fast memory stacked right next to the GPU — the reason Korean chipmakers sit at the center of the AI boom.
In plain words
High Bandwidth Memory — memory chips stacked vertically like an apartment building and mounted right next to the GPU for ultra-fast data transfer. AI computation is bottlenecked by how fast you can feed data in, so it's not an exaggeration to say HBM determines how good a GPU actually performs.
This is why Korean chipmakers are at the center of the AI boom — SK Hynix and Samsung Electronics together effectively control the global HBM supply. Headlines about "HBM supply deals" or "next-generation HBM development" are both Korean economic news and global AI infrastructure news.
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