Windows' (and ultimately Windows users') reliance on the usual AMD and Intel processors might soon be coming to an end. Microsoft gave not-so-subtle hints of their shift in processor support, when they showcased Windows 8 running on a few ARM processor powered devices. Analysts have also thrown Qualcomm and Nvidia into the mix, citing Windows 8 support for the two other mobile processor chip manufacturers.
If this were to become reality, you could very see low-cost Windows 8 machines powered by these mobile chips alongside the machines running AMD and Intel processors. How this would pan out for consumers is that the range of notebooks available for purchase would get even larger. You would soon see less powerful but cheaper notebooks in the market and get one that exactly fits your needs and budget.