The current and previous generations of xbox and playstation do use x86 CPUs with integrated AMD GPUs. But they aren't just PCs in a small box. Using a unified pool of GDDR memory* is a substantial architectural difference.
*except for the xbox one & one s, which had its own weird setup with unified DDR3 and a programmer controlled ESRAM cache.
*except for the xbox one & one s, which had its own weird setup with unified DDR3 and a programmer controlled ESRAM cache.