The smallest benchmark (*) OpenGL available on the internet, and free!
100 KB – Single application, no installation required only Drag & Drop!
For macOS 10.3.9 and later.
(*) Note on the results: OpenMark bases its score on the maximum number of textured triangles (call it “3D casting”) that your Mac can simultaneously show before the framerate drops to a critical level. No scientific claim, good to compare two Macs with the same test.