Via announced its Nano platform for low-power budget notebooks a week ago. The Nano platform, based one a new microarchitecture called Isaiah, is designed to compete with Intel's Atom processors. These types of processors are generally low-cost, and suited for devices like Asus' Eee PC and similar offerings from other hardware vendors.
At the same time, nVIDIA announced its own processor line to compete with Intel's Atom, with an offering using ARM technology instead of x86. eWeek writes:
Intel of course has the advantage of being a very well established name, and its sheer size could prove quite the daunting opponent for Via and nVIDIA. Still, eWeek writes, analysts believe the two smaller companies stand a chance. "Intel's sheer size and its OEM relationships should serve it well here," writes Charles King, an analyst with Pund-IT Research, "But the greater market for netbooks and similar devices is so immature that determining the dividing line between failure and success is likely to be challenging for the foreseeable future."