Speed comparison :

I’ve made a little video to show the difference.

It’s proved : OWB speed is much better when running from RAM Disk.

How to automate :

I think the best is to add a little script which copy OWB drawer from SYS:Utilities to RAM Disk: into your User-Startup

So add this :

mkdir ram:OWB
copy sys:Utilities/OWB Ram:OWB/ ALL CLONE >NIL:
copy sys:Utilities/OWB.info Ram: >NIL:

Problems :

the copy time is long (it is still usable : almost 20s added to the boot time), but we can make it faster if we delete useless files from the OWB drawer (docs, …)

If you don’t copy the drawer back onto the HD, you won’t save your cache, cookies, passwords… So you need a script for it.