AI servers primarily involve three key PCB product categories: GPU substrates commonly employ high-layer boards exceeding 20 layers; compact AI accelerator modules predominantly rely on 4–5-layer HDI for high-density interconnections; while traditional CPU motherboards form the. AI servers primarily involve three key PCB product categories: GPU substrates commonly employ high-layer boards exceeding 20 layers; compact AI accelerator modules predominantly rely on 4–5-layer HDI for high-density interconnections; while traditional CPU motherboards form the. AI server PCBs serve as the fundamental electronic platform, connecting and supporting the processors, memory, accelerators, and power management systems required for artificial intelligence computational workloads. Within AI servers, PCB design addresses high-speed signal transmission, high power. Ultra-High Layer Counts (10+ layers, even 20+): Modern AI servers integrate multiple high-performance GPUs, CPUs, vast amounts of memory, and high-speed interconnect chips. Complex circuit designs necessitate more routing space to accommodate dense and precise signal and power networks. This has. The AI Server HDI (high‑density interconnect) PCB market comprises multilayer printed circuit boards that enable ultra‑high bandwidth, low‑latency connections among CPUs, GPUs, memory modules, and networking chips in AI‑focused data‑center servers. AI Server HDI PCB market size reached. AI server infrastructure has become the single most powerful demand driver in the global PCB market in 2026. Layer counts for. AI Server HDI (high-density interconnect) PCB by Application (Universal Server, Logical Server, Training Server), by Types (20 Layers, 24 Layers, Other), by North America (United States, Canada, Mexico), by South America (Brazil, Argentina, Rest of South America), by Europe (United Kingdom. AI Server HDI PCB technology is getting much improved because of advanced Chinese PCB equipments. The main manufacturers are VGT, Sayfu, SCC, FP etc. Victory Giant Technology (HuiZhou) Co.