I'm looking for information on whether a higher GHz computer will actually get stuff done faster when running in low- and medium-load situations. Let's say that I'm browsing the web, watching videos, or doing software development in Xcode. In each of these cases, will a higher GHz computer do these tasks any faster? Does it add up over years? Or does it only add up when doing high-load processing? And if it is faster, then what is the impact of that on battery life? Will OS X automatically throttle the CPU when in a battery situation? Just trying to decide on 2.3GHz vs. 2.6GHz top-line MBP Haswell, keeping performance and battery life in mind. Tests on pre-Haswell rMBPs seemed to show that the faster processor resulted in a 1.5 hour impact on battery life. Thanks!