I have been surprised at how little use eighties computers made of fast page mode access to RAM. (A notable exception being the Sinclair Spectrum, which used it to get the necessary bandwidth to video memory.) The Amiga, for example, used 41256 RAM chips of 150-ns speed grade, and performed a random access every 280 ns, but those chips are capable of better; even the older 4164s can do a pair of accesses in fast page mode in less than half a microsecond. The Archimedes widened the data bus to 32 bits, but a road not taken would've been to keep the data bus at 16 bits and use fast page mode to transfer a 32-bit word, or even a pair of such words. So I'm trying to figure out exactly what was the potential of the available chips.
Given the 41256 RAM chips of 150-ns speed grade, that were readily and cheaply available in the mid-to-late eighties, just how long would it take to read four consecutive words, the second, third and fourth in fast page mode?