Lowendmac reports that the soon-to-be-released (rumored) new Intel iBooks are going to sport a 2.16Ghz Intel Yonah processor (which is the successor to the current Pentium M line).

If you’ve played with Mac OS X 86 so far, then this should give you a warm and fuzzy feeling. I tried Mac OS X on my Pentium 4 2.0Ghz here at work, and it ran quite fast (way faster than my 1.33Ghz PB 12″ which stands next to it), although my video adaptor ran without any hardware-acceleration (vesa).
So I imagine a fully accelerated and even more optimized Mac OS X on a 2.16Ghz Pentium to outperform my simple setup by far. Can’t wait.