Except that it does appear to be running that ARM11 faster than the N800 did.

I never really had a major problem with speed on my N800 or N810. Obviously, faster is good, but I never expected to do a lot of CPU intensive things on it.

For an Android device, the 525ishMHz (ARM11, IIRC) CPU is "fast enough" for 90% of what I do with a pocketable device. So, a 650ish MHz ARM11 is an improvement. Whether it's here, or on the Inventec N18.