I've been thinking about some of the performance benchmarks I've been seeing on AndroidAndMe.
CPU performance from the new TI OMAP 3630
Now, the OMAP 3600 series is simply a 45 nm version of the 3400 series we see in the original Droid, upclocked accordingly due to the reduced heat and improved efficiency of the smaller feature size.
If you need convincing, see TI's own documentation: http://focus.ti.com/pdfs/wtbu/omap3_pb_swpt024b.pdf
So essentially the OMAP