Overclocking 3640 board

[stefcep2]

I've performed this hack, and I must say it works perfect for me. Just to be sure, I swapped the 25MHz 040 for a 33MHz and put an active cooler on it. And while I was at it, I also replaced the capacitors.

So if you want to go for a little hack... this one's recommended.

I read that you might get motherboard timing issues. and that a trace on the mb has to  be cut?

[stefcep2]

Aren't you mixing up with the infamous INT-2 hack on the A3000? Anyway, I used the upgraded A3640 without problems in my A4000T. At this moment there's only one Zorro expansion card (Elbox FastATA) and it has no problems.

No.  Check here: http://members.iinet.net.au/~davem2/overclock/a3640.html

i was at the overclocking workshop Dave refers to above, and yes we had issues with overclocking above 28 mhz, and he did cut some tracks on the MB.

It was may be 8-10 years ago though so i'm a bit hazy on the details.