i dont have any way to test, but i guess rob will when he gets them back.

rob also said that.

i dont see any oscillators that control the cpu speed there is some circuitry that is right near the cpu... and that whole area near the cpu has different parts in different orientations. when you set the 25mhz board side by side.

its weird this stack i got from from rob, its like all 10 boards are slightly different in various ways its like they are prototypes or something.

( not like mac's where they are all mostly the same looking )

he said they had a state of the art facility, and could change a board half way through the days production if they wanted to.

here is a video of the NeXTproduction facility.

http://www.blackholeinc.com/docs/NeXT%20Videos/The_Machine_to_Build_the_Machines%281%29.mp4