Using all 12 CPU Cores
Usually my 12-core 3.33 GHz Mac Pro is fast enough, but not always, and most programs do a poor job of using 12 CPU cores.
But at least a few do use the available CPU cores, and Topaz InFocus (sharpening of images) is one such tool. It blips the CPU core usage up nicely, though only briefly. Now if only Photoshop CS6 itself could do so well.