Apple to unleash an update to the MacBook side of things, your wait was ended last week, but if you've been wondering just how much difference the increase from 2MB to 4MB of L2 cache (and the 0.17GHz bump, too) made, here's your sign. MacLife was able to get its hands around a $1,099 base unit, and rather than carefully coaxing into the world, it broke out the whipping stick and put this bad boy to work. The new machine was pit against the old base MacBook (at 1.83GHz) and the previous 2GHz BlackBook, and while increases in efficiency weren't exactly considerable, reviewers found them at least noticeable. The latest machine shaved seconds off here and there from iMovie exporting and Photoshopping, and while most tests showed just single digit improvements, the iPhoto test did display a 22-percent gain compared to the previous 1.83GHz MacBook. Of course, these preliminary tests aren't anything out of the ordinary, but keep an eye on the read link for more fleshed out testing (including the refreshed BlackBook) in the coming days.