They are not intended for use in the 3000, since that would be completely useless... They were used in 4000´s without an onboard CPU, probably as a method of keeping costs down, as mentioned...
They are referred to as "3200" and "3400" since there were probably two Amiga models going to be released which would bear the names Amiga 3200 and 3400, which were basically A4000´s with different CPU´s...
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