Illustrated Full Process of Intel Core i7 CPU Production and Architecture Overview

The article introduces an illustrated, step‑by‑step overview of CPU production using Intel Core i7 as a case study, covering Intel's x86 architecture history, raw material preparation, and the complete manufacturing chain.

It reviews the evolution of Intel's x86 family from the original 8086 to modern Core series, discusses competition with AMD, and mentions Intel's exploration of alternative instruction set architectures such as IA‑64/EPIC.

Raw materials are described, emphasizing that silicon—derived from high‑purity quartz sand—is the primary component, supplemented by metals like aluminum and copper and various chemical agents required for semiconductor processing.

The preparation stage details silicon purification, crystal growth into ingots, slicing the ingots into wafers, and polishing to achieve mirror‑like surfaces suitable for further processing.

The core semiconductor steps are explained: coating wafers with photoresist, exposing patterns through masks using ultraviolet light, developing and etching to create circuit features, doping to modify electrical properties, depositing multiple metal layers, and final planarization.

After fabrication, wafers undergo functional testing, defective dies are discarded, good dies are packaged with heat spreaders, and a final binning test determines performance grades such as Core i7‑975 Extreme or lower‑end models.

The article concludes with a forward‑looking discussion on the limits of the x86 architecture, Intel's shift toward new ISA designs, and the establishment of the RISC‑V International Open‑Source Laboratory (RIOS) at the Tsinghua‑Berkeley Shenzhen Institute, highlighting the global impact of open‑source CPU initiatives.