@cm said:
i asked this question years ago already und the answer was as simple as shattering:
the available grafic-memory is not large enough to have the impulses permanently loaded in (grafic card) RAM, which is required for fast calculation of the audio to output. using the GPU power just for calculations would result in a bottleneck on the bus (constant loading/unloading of impulse data) ...
That may have been true years ago when you asked that question.
The VRAM in the new Mac Pro can be up to 6GB. The largest venue for IRs in MIR Pro is 1.32GB. So, please ask this question again.