I had old HX motherboards with dimm slots
PPRO would many times also have dimm slots.
In both cases the chipset required EDO/FPM
Want some real fun?
FPM existed in dimm form and dimms of that period could be 5v or 3.3 volt so you had to make sure your mobo could set voltage correctly and don’t mix voltages.
There was even 5v and 5volt tolerant SDRAM in the early times, much of which wasn’t JDEC compliant, making timing and compatibility a nightmare .
Intel wisely kept SDRAM support off their high end offerings until quite late in the game due to poor standardization of SDRAM, especially pc100, during this time many stuck with old reliable EDO Dimms to avoid the nightmare of sourcing sdram that would be stable with their system.
Beyond x86 there was all sorts of crapola that used dimms before SDRAM was common, even Macintosh.
In the day what sucked was 32mb of “dimm” memory was twice the price of 32mb of Simms , that incomprehensible cash grab went on longer than you would want.