A chiplet is a smaller, modular processor chip that manufacturers combine with other chiplets to build a full CPU or GPU. Instead of making one large chip, companies break the design into smaller pieces, each handling a specific function.
This approach offers several practical benefits. Smaller chips are cheaper to manufacture because more of them fit on a silicon wafer, and defects affect fewer complete units. Chiplets also let manufacturers mix and match different designs: you might combine high-performance cores with efficiency cores, or specialised processing units for particular tasks.
AMD has championed chiplet design in its Ryzen and EPYC processors for several years. Their Ryzen 5000 series uses chiplets to deliver high core counts and strong gaming performance. Intel has followed suit with recent generations. Graphics cards also use chiplets, letting makers stack memory and processing power more flexibly.
When buying a processor, you don't need to worry about chiplet architecture yourself. What matters is the final performance and power consumption of the finished chip. However, chiplet designs sometimes show slightly higher latency when chiplets communicate with each other compared to monolithic (single-piece) alternatives, though this difference rarely affects real-world use. Some enthusiasts monitor this when overclocking or running specialised workloads.
Understanding chiplets helps explain why modern processors offer better value for money and better efficiency than older designs. If a seller highlights chiplet architecture, they're usually emphasising manufacturing efficiency and improved yields, which translates to lower costs and better availability for you.