r/w speed inner vs outer tracks

[Alfred Breull <puma@hannover.sgh-net.de>]

http://apollo.backplane.com/FreeBSD/tuning.html
says data transfer from outer tracks is more quick than from inner
ones -- however, two members from our tech stuff say that it is more
quick from inner track sthan from the outer ones.

So,which is more quick: r/w from inner tracks or from outer tracks ? 
Or is this neglectable in (about 30 to 90 minutes) cpu intensive 
computations [i.e. (re-) sortings of indices and elements' values in 
large matrices] ?