In addition to an overall reduction in the number of services launched at startup, faster booting is achieved by loading device drivers in parallel instead of sequentially. Windows 7 also manages wireless radios better allowing them to drop below 100% power draw while managing the connection. And by tweaking the OS kernel, the CPU can sometimes run at a lower frequency and stay idle longer. This results are a minimum of 11% better battery life for Windows 7 compared to Vista -- and we're still only talking about pre-Beta Windows 7 software, mind you. Nice. Windows 7 also promises better memory management. So instead of managing all the background windows, Win7 offloads this to the GPU, for example -- system memory is then free for your applications and data.
Windows 7: 15 percent more battery life, faster bootups
Posted on Friday, November 07 2008 @ 2:54 CET by Thomas De Maesschalck