Just in case you haven't heard of Qualcomm's most powerful processor at the moment then the Snapdragon 800 is a beast of a processor which has integrated 3G and 4G support as well as speeds of up to 2.2GHz. This processor will be available later in the year along with the update to Windows RT!
That's what Qualcomm are doing with the high-end devices, but in the mid-range Qualcomm's Snapdragon 400 has been refreshed with four ARM Cortex A7 processors and built-in 4G LTE. The additions of 4G LTE and it being a quad-core processor makes this a much more marketable processor and is something which they needed to do given the plans of Mediatek to launch a 4G SoC for the mid-range later in the year!
Via HotHardware and AndroidBeat.