The answer is DIMM. Many chip makers discovered at about a similar time that they could gather SIMMs onto either side of a solitary card to create DIMMs, utilizing basically similar chips. This was a vastly improved, substantially less costly alternative than some other, so it was immediately embraced by the majority of the real makers of motherboards. A glad "symptom" of this new innovation was that by having the majority of the memory that was being handled, diverted through a similar transport, on a similar chip, it took into consideration the chips to keep running at a much lower temperature than some time recently, along these lines taking care of the RIMMs costly warmth issue.