Ace's Hardware heeft wat handig speurwerk verricht in een aantal pdf'jes van Micron, waaruit blijkt dat DDR en SDRAM DIMMs ivm afwijkende pin count niet compatible zullen zijn:
Well, for those people are wondering about backward compatibility when the new PC platforms switches to DDR SDRAMs, well it seems that the motherboard will have to have two types of sockets to let you use your PC100 or PC133 RAMs. From micron's pdf on the 184pin DDR SDRAM DIMM and 168pin SDRAM DIMM, the physical dimension would prevent using the 168pin DIMM in the 184pin socket, or let 184pin DIMM to get in the 168pin socket.
