Help! What to look for when rendering animation in ToomBoom?

If I’m rendering 2D HD animation with Toom Boom Pro for example, what is more important of my set up, processor clock speed or the number of cores running on the processor?

Asking becauze im noticing the more cores, the slower clock speed, but I haven’t don’t animayion in a long time so wondering which is more important as I’m shopping for my equipment!