installed 10.0.4 Patch 23 and lost track of the archive and related
documentation. It was documented on our system as 10.0.5 by a normally
accurate individual. Are these two version of MKL equivalent?
Yes, these versions of our products are nearly equivalent. 10.0 update5 only contains some performance improvements regarding FFT and BLAS routines on some specific CPU types. Please see the details into Release Notes.