NVIDIA has two CPU lines

The big brother CSX 600 and 650 is aimed at larger machines with screens between handhelds and real laptops. It runs Wince, not XP or Me II because it is not x86, and in general makes you question why they bothered. The chip itself has 256K of L2 cache and can be die stacked to keep the footprint small.

This one runs at 700-800MHz and will support 1080p at 24FPS, not the full 60. It also has hard disk support and can run video in under 3W. If you are keeping track, this is about what Atom can do, but Atom doesn't have that pesky FPS limit.