Is my pc ready for dolphin?

[KHg8m3r]

Using the OpenGL backend with the Vertex Streaming Hack under the Graphics tab (only visible under OpenGL) gives a speedup over Directx.
You will probably run into a CPU bottleneck with Super Mario Galaxy, as it is pretty demanding.
You will definitely run into a slowdown in Twilight Princess later on in the game when you get into Hyrule Field. Its a known bug. Use the game-specific fix for it under game properties.
Skyward Sword needs a real Wiimote Plus