Current development versions are much faster for the CPU, but require a faster GPU. While is indeed the case for *most* users, I'm not sure if this fits your requirement on this laptop. First, it's an intel sandy bridge GPU, and second, the OSX driver. This combination is quite bad for dolphin.
So, 4.0 is likely better if you want to render in HD. Development versions are likely better in native resolutions, but this might require windows via bootcamp for compatible drivers. If you want to try this, choose the D3D backend, as the intel OGL driver on windows isn't that good either... But this combination should provide the fastest emulation
So, 4.0 is likely better if you want to render in HD. Development versions are likely better in native resolutions, but this might require windows via bootcamp for compatible drivers. If you want to try this, choose the D3D backend, as the intel OGL driver on windows isn't that good either... But this combination should provide the fastest emulation