I am running os 3.9 (but this is the modified startup-sequence on the 3.1 install disk i have had to modify the disk itself and remove and add programs).
It is not the whole startup sequence.. that is quite long.
Until my ide express went dead (waiting on a replacement from Amigakit) it was much faster then onboard sry but i never did do a bench test, but compared to on board you can notice the difference. I have a Cobra 030 board with 32MB Ram, and a 20GB HDD and a Liteon CDRW.
If you want my startup sequence i can pm it to you. Just Pm me