One or more of the following, possibly:
1) The benchmark may have been revised without them updating the 9590's score. That would be very sloppy/unprofessional.
2) The 9590 is throttling.
3) The cruddy turbo of Piledriver is causing a drop of multi performance. This is where my money is.
AMD put 5 GHz turbo on 9590 for PR but they should have, at least, released other 9000 series CPUs with no turbo: One at 4.6 (9370), one at 4.5 (9350), and one at 4.4 (9320).
My 8370E at 4.7 beat the 9590's score handily.
Edited by superstition222 - 10/7/16 at 6:25pm