A chipset (System on Chip) integrates the CPU, GPU, modem, image processor, and AI accelerator on a single die. The chipset largely determines a smartphone's performance class.
Apple A-series and M-series chips lead in single-core performance. Qualcomm Snapdragon 8 Gen series leads Android flagships. MediaTek Dimensity 9000+ competes at flagship tier; Dimensity 7000/6000 serves mid-range.
Key chipset metrics: CPU cores (typically 8 in big.LITTLE arrangement), peak clock speed, GPU performance (3DMark / GFXBench scores), modem (5G mmWave or sub-6, Wi-Fi 6/6E/7), and Neural Processing Unit (NPU) TOPS.
Chipset generation typically influences the device's battery life, thermal behavior, and software support length more than raw specs suggest.