Years ago I had an A3640 in my A4000, which I later upgraded to a Warp Engine. I purchased the Warp without an 040 and transferred my existing 25MHz 040 into it. I was able to overclock it to 40MHz with perfect reliability. I later sold the Warp to a friend, and it is still running reliably to this day.....at 40 MHz.
I found that 40MHz was the absolute maximum - any more and it would crash. I did try genuine 40Mhz 040s in the Warp and got just under 45MHz.
I used a 486 CPU cooler with fan to keep the 040 cool.
It is also possible to get an A3640 past 33MHz, with an additional cut and jumper mod.
Check out my overclocking site:
www.starnet.com.au/davem/amiga.htmlDavid.
