Thats a very informative post but I still don't understand how those mamba jamba will help in real life as far as battery life is concerned. Like I said earlier, my mba consumes about 6W in idle state and about 8w when watching movies. Most of the power consumption comes from components such as screen. In day to day tasks such as browsing the web,writing docs etc, I don't think Ivy Bridge can improve battery life anymore as sandy bridge gets these kind of jobs done extremely fast and goes to idle immediately. Once the sandy bridge is idle, all of the battery consumption comes pretty much from other components. It is all guessing right now, we will see it in a year. I think Ivy bridge will significantly improve GPU performance but not battery life. Haswell on the other hand, will be a more significant upgrade as it will reduce TDPs to 10w compared to 17w of Sandy bridge and Ivy bridge.