Advantest makes automated test equipment (ATE) used to verify that semiconductor chips function correctly before they ship. Every chip that leaves a fab—whether a GPU, a memory module, or a networking chip—must pass through test systems that confirm its electrical performance meets specification. Advantest is one of the two dominant suppliers of this equipment globally, with particular strength in the high-speed memory and logic testing segments most relevant to AI hardware.

The growth of AI compute has made chip testing both more important and more technically demanding. HBM memory, stacked in multiple layers and operating at extremely high bandwidth, requires specialized equipment capable of validating the full stack. AI GPUs, built on the most advanced process nodes available, have more transistors, more interconnects, and more failure modes than any prior chip generation. Each increase in chip complexity expands the scope of what Advantest's equipment must do, and the volume of chips requiring that testing has grown alongside AI infrastructure investment.

In 2025, Advantest launched new test systems supporting HBM4 and next-generation logic qualification, ahead of the memory transition expected with Nvidia's Rubin GPU architecture. Revenue grew approximately 20% YoY, driven by AI chip production volumes at TSMC, SK Hynix, and Micron. Service contract volume has also expanded as fabs and OSATs running Advantest equipment operate at high utilization and require ongoing support.