Plecky said:I noticed on anandtech.com's review of the new iMac Core Duo, the reviewer was able to turn off one of the two cores. If that functionality is available along with noticible dimming of the screen (since it is 67% brighter), then battery life should improve to at least 3:30-4:00 real world computing hours I hope.
That turning off core is only going to be available, with the developer tools. I do it on my iMac, but you just need to download the CHUD tools.
However, that article also showed very little difference in power consumption, when one core was turned off, so I'd keep them both on.