how fast can you overclock a 1220/4 28 Mhz ???

[Effy]

http://www.amiga-hardware.com/blizzard1220.html

Got one of these in my RBM tower and got also a Speedmaker to change mhz. How fast can one overclock such a 68020/28Mhz

[Brian]

I don't thik you can overclock it (more as it's actually overclocked from 25Mhz already) as it take it's clock from the Amiga, the crystal socket available is only for FPU clock.

[Effy]

If it takes its clock from the A1200 then it should be only 14 Mhz,not

[Holley]

14MHz, times two ;-)

I had an Appollo 020, don't think it would take kindly to overclocking - much better idea to get a cheap '030 card ...

[Lemmink]

Thats right, the B1220 takes it clock from the A1200 mobo and multiplies it. Th next step would be 42 MHz if you find the multiplicator and a way to change it, but I highly doubt, that the 68020 will take so much pain.
The crystalsocket is just for the FPU in case you want to clock is asyncronusly.

[Effy]

Okay then, thanx for the info even though it wasn´t that positive  :-)