bigfoot wrote:
When it comes to performance, it's pretty hard to generalise just based on specs alone. For current MorphOS OpenGL applications, the limiting factor in OpenGL performance is almost always memory bandwidth. For future ones that will use complex shaders, having more and higher clocked shader cores will become more important than memory bandwidth.

As for actually using all the cores, that is pretty much transparently handled on the hardware itself. The driver doesn't program individual cores, it just submits a job to the GPU, and the GPU internally handles splitting up this job into smaller parts and handing those parts to individual cores. So short answer: Yes, MorphOS will be able to handle any shader core count.