What Is A Really Good CPU for Gaming And Streaming?

Games typically use a small number of CPU threads (generally 4 at the most), and some are more CPU-reliant than others (Counter Strike: Global Offensive vs Assassins Creed 2). Additionally, as the resolution increases, more of the rendering and computation shifts from the CPU to the GPU.

Streaming those games though, requires rendering video on the fly, and that requires more CPU power than just gaming. Rendering/exporting video is typically heavy on CPU threads, and overall CPU horsepower.