But, in making a matched pair, a manufacturer might, say, require that sitcks be within, say 0.01 of each other. Thus individual sticks that pass QC could have any value of X from 1.00 to 1.05. Making the picture more concrete, using arbitrary numbers: Suppose there is some characteristic, X, that is allowed to vary from 1.01 to 1.05. or if they didn't do that, that they'd at least ensure that matched pairs were part of the same batch. CPU's have inter-unit variation, so I figure RAM does as well, and my assumption was that, to create matched pairs, manufacturers paired sticks whose characteristics match within a small range. 4 x 16 GB (if the RAM is otherwise identical)?Ĭlick to expand.Yes, I did think "matched" meant something beyond the same part no. But if you have four sticks, all with the same part no., and they came as two matched pairs, should the individual sticks within each pair be installed in the same channel or different channels? I.e., if pair X consists of sticks X1 and X2, and pair Y of Y1 and Y2, should it be:Īnd what about memory kits that contain four sticks? Would all of these be matched and, if so, is there any benefit of four matched sticks over two matched pairs?įinally, is there a performance difference between using 2 X 32 GB vs. This makes sense, since if you don't you won't get dual-channel operation. I know if you have just two sticks, you need to install them in different channels to get full speed. The Kingston memory modules have "Micron brand Chips" on 2 sides, which can only please, since compatibility with my regular memory modules from Micron provides 100% compatibility and performance in various tasks when working on iMac 2020 (27*). Only after these manipulations with memory – I achieved a positive result, namely the frequency bandwidth on 4 memory modules - in the amount of 2667 MHz and a full 2-channel mode!!! Installed Kingston memory (32GB) in slot No. Installed Micron memory (32GB) in slot No.
There is no compatibility conflict between Kingston and native (regular) Micron, but please note that the specifics of the operation of the iMac 2020 (27*) "version 20.1" monobloc model range allows you to provide a frequency bandwidth of 2667 MHz and a 2–channel mode, only if if the memory modules will be installed in the following order, for example I installed this way: At the moment, all 4 slots for RAM are occupied. On my iMac 2020 (27*), 2 pcs of Micron 32GB 2RX8 PC4-2666V-SE1-11 memory modules were installed normally (64 GB in total), I also bought and additionally installed two 32GB Kingston KCP426SD8/32 memory modules.
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