Microsoft is taking a "big gamble" with its new Windows 8, one that will see the operating system peak at just 20% to 25% of corporate PCs, Gartner analysts said today.

"Microsoft is taking a big gamble over the next few months with Windows and Office, the two products responsible for most of its revenue and profit," the research firm said in a statement Tuesday. "[But] it is a risk that Microsoft must take to stay relevant in a world where mobile devices with new modern experiences are becoming the norm."