rittwage
Veteran Member
Those jumpers are very important, but it won't do anything without ROMs.
Interestingly, an A3000/25 runs about the same speed with the stock CPU as with an A3640. And, the rather large amount of heat introduced inside that small case by the '040 is very problematic.
Not sure exactly what you mean here... They both run at 25MHz, but one is 68030, and the other is 68040. Quite a difference in speed. The 3640 roughly triples the speed of the A3000.
Now, the stars must be aligned just right to get the 3640 to work in an A3000. You have to have real 2.0x ROMs (not softkicked), the card has to be the right version (3.1 or maybe 3.2 with correct PALs), the jumpers have to be correct, it has to have low-profile heatsync, and there is the issue of heat you mention. However, there are very few accelerators for the 3000, so it is worth it if you can get it working. I wouldn't try until the rest of the machine is stable, though.
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