A3640 CPU for A4000(T) running at 32mHz on ebay

[amiga92570]

did you just replace crystal or did you modify delay line? Also what speed processor are you using. I Have a couple 3640's and was going to overclock one with a 33mhz 040 but wasn't all to sure how stable it was.

[amiga92570]

I know you can get them to about 33mhz, but you have to make a delay line modification. Some still do not work correctly, but I couldn't help to think that this was due to the 25mhz chip heating up. I have been trying to find someone who has overclocked it and installed a 33mhz chip to see if it still has the same problems. Have you unclipped the heat sink to see if it has a 25 or 33mhz chip? I really want to know.  :-D

[amiga92570]

thanks, thats the delay line mod. I may give it a try.