OpenEmu requires OS X 10.7 or higher, which means it should run on any Intel Mac but the very earliest 32-bit models. As newer emulators are added, you may need to worry a little more about your CPU and GPU specs, but the age of the currently supported consoles means that you won't need to sweat the system requirements most of the time.
Best Mac Os X 10.7 Nintendo 64 Emulator
After pulling some games in and organizing them to your liking, you'll want to configure a gamepad (the emulators will all work with a keyboard, but console games are all best suited to console controllers). Any USB/bluetooth gamepad should work with OpenEmu once you've mapped the buttons, including controllers for modern consoles like the Wii U, Xbox 360, PS3, and PS4. OpenEmu includes a built-in "Add a Wiimote" function that makes pairing a Wii Remote to your Mac just as easy as pairing it to your Wii. We'll be using a Wii Remote with the Classic Controller Pro attached. 2ff7e9595c