I have an idea of how much faster it will be.
try running quake timedemo on your 060 then I can tell you that the same timedemo on an old ibook se466 runs at about 38fps. this is with the same amount of gfx ram and bus speed as my csppc. with cvppc.
Also a quake 2 time demo on the same Mac runs at about 35 fps when it only runs at 17 fps on my PIII 800 laptop with exactly the same gfx hardware harddrive and the same amount of ram and a processor that SUPPOSED to be so much quicker.
On the x86 Amiga os subject, has anyone seen the latest version of BeOS being sold at a large PC shop recently, I guess not, because it's been squashed by M$, how long do you think Amiga OS will last in the same ball park?