Both Wave One and Wave Two Windows Phone devices are usinmg Qualcomm’s chipsets — as the Microsoft minimum hardware requirements for the platform themselves require them. This makes Windows Phone and Windows Phone Mango a Qualcomm only platform.
In 2013 though — the time Windows Phone Tango, Apollo or even Windows 8 could land — phones powered by Redmond’s platform could very well be operated by Tegra chipsets, according to the roadmap above. nVidia’s SOCs have been powering Android smartphones for quite a while now — aside from the tablets they operate too — but it looks like after Kal El+, the chipset maker is planning to offer both Android and Windows/Windows Phone support. It will be interesting to see if the phones will be Tegra-only — like they’re Qualcomm-only now — or will the user be able to choose from a wide range of phones, powered by Tegras, Snapdragons and why not, TI OMAPs?