Apart from the standard dual-core 1.0GHz Samsung Exynos Coretex A9 processor that everyone knows is trippin', you will also find an NVIDIA Tegra 2 processor inside to help out with all of the multimedia processing and work. It also makes perfect sense for Samsung's flash memory to be included as they are the world's largest flash memory manufacturer.
What the FCC used to inspect here is a wee bit different from the smartphone that iFixit took apart – after all, Samsung's Galaxy range was designed to be different across regions and carrier specifications, so the board layout here is slightly different between other Galaxy S II models.
source: Ubergizmo