1) If I would the replace the 28 MHz chrystal on the Amiga motherboard with a 30 MHz or a 25 MHz one, what would happen???
Would the whole system go bonkers...
Yes.
2) Many years ago in Amiga Format the technical letter answer guy said that you might get a faster system if the chrystal of the turbo board and the motherboard had one and the same timing.
If I would remove the chrystal of my turbo board ( 50 MHz) and put some elektronics behind it that divides it by two (25 MHz) and give that to the motherboard and the 50 MHz again to the turbo board, would that work!!!
Most A1200 turbo boards have fast memory on board, that is on local bus, only custom chips and chipmem is accesses go thru the amiga bus.
You would not see much difference here, since the custom chip and chipmem access is much slower than the bus bandwidth anyway.
Dunno if "the sync" has any meaning here, maybe someone with better technical knowlege knows the answer. Anyway, even if it makes a difference, the difference would be only few percents, if even that.
3) If I buy two graphic chip coolers and fans and glue them on my 68030 and FPU 50 MHz from the Blizzard-IV would it be able to run 60 MHz!!
Probably. The FPU is more likely to give you troubles though, 68030 clocks to 60MHz easier.
Years ago, I ran my B1230-III 68030 at 60MHz (without any extra cooling) for some time before getting a BPPC.
I'm I the only one with thoughts about an overclocked Amiga 1200?
Probably, because messing with the A1200 main clock is not a good idea. Overclocking accelerators works better, and lots of people have done that.
