Rendering with Multiple Cores
Rendering complex scenes with eight cores, I couldn't help but to notice that in an intense area, a single core could get bogged down - working all by itself on that vast portion. I figured that, if all of my cores could help with that spot, the whole process should work faster. So I cranked the rendering tile size down all the way - which is 16. This setting is at the very bottom of the rendering tab in the render room, under the network settings.
I haven't actually timed which is faster, but it only seems to make sense to me.