These are Beta Versions, Development Versions, and Stable Versions. You can download Dolphin Emulator installers for Windows and Mac in three major versions. For Mac users, there are available macOS and Mac OS X installer versions. Dolphin Emulator isn’t compatible with 32-bit operating systems. If you are not sure about your PC’s version, you may verify your computer’s system properties. There are two versions for the Windows operating system. Also, you will need a graphics card that supports Pixel Shader 2.0 or higher to successfully download and install the Dolphin Emulator. However, the more cores, the more optimized your system performance will be. You will need a fast processor that is compatible with the SSE2.
You can download the latest version of the Dolphin Emulator from the downloads section of Dolphin’s official site. How to Download the Dolphin Emulator Photo by XDA Developers