[chuck-users] CPU performance and Jack

Hello all, So, I'm doing a bit of heavier crunching and was wondering what aspects of CPU performance are the most critical the JACK's DSP percentage? I've not been able to find a very clear answer and was wondering if this group might know? Does running the dual core version of JACK make more sense with a slightly slower processor, or is speed the real winner in this case? To clarify, I'm basically just heavily crunching incoming audio. Thanks for any insight! -Matt