I've not yet managed to get my CPU above about 70
Although I don't do any video editing or 3D modelling so
Also on the matter of the RAM, max out for sure.
I had 2GB of compatible RAM in my old laptop and switched it to the MacBook and as of now I have 16MB free :/
This could probably be assigned to the massive memory usage of Safari but I was still surprised just quite how much OS X uses
I only managed to hit 75c by "stress-testing", i.e. running "yes > /dev/null" in two Terminal windows. I figured with the electronics bathtub curve and I'm allowed a one-to-one swap within the first seven days, I might as well max out my new BlackBook to see if it will hold
According to FedEx tracking, my RAM should arrive tomorrow! Arrgh, can't wait for it to arrive!