Dolphin makes use of two processors if present!
Windows XP or higher, or Linux, or MacOSX Intel.
Fast CPU with SSE2.
GPU with Pixel Shader 2.0 or greater. Some integrated graphics chips work but it depends on the model (and only with DirectX 9).
Runtime Library Requirements
You will need the libraries listed below to run Dolphin:
MS Visual C++ Runtime 2008 SP1 (fixes the "side by side" / "application config" & model errors)
Microsoft Visual C++ 2008 SP1 Redistributable Package (x86)
Microsoft Visual C++ 2008 SP1 Redistributable Package (x64)
DirectX March 2009 Runtime (fixes the plugin loading errors)
DirectX End-User Runtime Web Installer
Video Card Requirements
You must have a video card that supports OpenGL 2.x fully or Direct3D 9.0c. Make sure your graphic drivers are up to date.