Single Rank Memory can be memory with chips on only one side of the memory module stick of memory or chips on both sides of the module as long as the chips are in one rank that is accessed while writing to or reading from the memory. Dual Rank Memory is basically like having two Single Rank chip ranks on one memory module, with only one rank accessible at a time. Quad Rank Memory is, effectively, two Dual Rank Chip sets on one memory module, with only one rank accessible at a time. See Below for Examples. However certain systems have better performance with multi rank memory due to onboard memory controllers.
Dual-Channel vs Single-Channel RAM: Which One is Better
Single channel vs dual-channel DDR4 RAM on the AMD Ryzen HS platform (Zephyrus G14 GA)
Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up. For example, when looking at server configurations I see the following being offered for the same server:. It is important to ensure that DIMMs with appropriate number of ranks are populated in each channel for optimal performance. Whenever possible, it is recommended to use dual-rank DIMMs in the system.
How to Choose the Right Memory: A 2020 Guide To DRAM
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