Microsoft and Intel say Windows 7 will offer better processor performance and battery life than its predecessor Windows Vista.
The claim was made in a joint demonstration in San Francisco of Windows 7 performance on Intel's multi-core processors, according to US media reports.
Microsoft's new operation system due for release in October was shown to deliver 11 times more speed and 20% more battery life than Vista on identically configured PCs.
A PC running Windows 7, equipped with a solid-state drive, was also shown to boot up within 11 seconds.
Representatives of both companies, however, emphasised that individual PC configurations would ultimately decide the degree of performance improvement.
In July, Intel said it expected Windows 7 to be adopted faster by the enterprise than Vista because of improved security, power management and interoperability.
In 2008, Intel refused to roll out Vista internally, but is preparing to adopt Windows 7 for internal use, according to eWeek.
A business technology refresh driven by Windows 7 is expected to benefit Intel, which has collaborated closely with Microsoft.
The operating system is also expected to drive revenues for many other IT companies, according to an IDC report released in July.
Windows 7 will have a positive effect for hardware, software, IT services and distribution firms, the report said, with more than 177 million copies of Windows 7 expected to be shipped by the end of 2010.
In further efforts to boost Windows 7 adoption by business, Microsoft has announced a 90-day trial of the Enterprise version for IT professionals.
Although the trial is freely available for download, Microsoft does not recommend installation of the software by non-IT professionals.