Intel and Microsoft say the Windows 7 operating system (OS) will give "better battery life and quicker boot times".

The firms made the claim at a press event in San Francisco where engineers put the new OS through its paces.

Microsoft are hoping their new system will perform as promised and avoid a repeat of the negative publicity associated with Windows Vista.

Both firms said they collaborated more closely than ever before to deliver a product "they are proud of".

More: http://news.bbc.co.uk/1/hi/technology/8232995.stm