Now that Windows 7 has launched into pre-Beta, Microsoft has joined the world in Vista-bashing as they look to differentiate their newest OS from the incumbent. Speaking to its hardware partners at WinHEC, Microsoft is promising faster shutdown and startup times and less power consumption than its beleaguered predecessor despite the two sharing the same code base. 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. Check the trio of videos demonstrating these improvements after the break.
Vista vs. Windows 7 Boot Race
Vista vs Windows 7 Management
Vista vs Windows 7 Battery Life