Just to clear some things up as well, modern PC games and emulators like Dolphin are two different kinds of programs that have different demands on the hardware. Most PC games today aren't as demanding on the CPU as they are on the GPU. That's why having a good GPU allows you to play many games with high settings even with a mid-range CPU. For Dolphin, it's often more demanding on the CPU than the GPU. The GPU in Dolphin is responsible for things like raising your internal resolution, anti-aliasing, and anisotropic filtering. The rest of your game's performance usually comes from the CPU.
Emulation isn't going to be nearly as fast as the actual hardware running native instructions. You have to translate all of the Wii's instructions into something your computer can understand, and at a fast enough pace to give you good gameplay.
Emulation isn't going to be nearly as fast as the actual hardware running native instructions. You have to translate all of the Wii's instructions into something your computer can understand, and at a fast enough pace to give you good gameplay.