I'm trying to figure out the performance differences between 1Rx4 and 2Rx4 (single rank vs dual rank) memory modules.
From what I can logically conclude 2R (dual rank) should be slower, as you will have to wait a few cycles while switching between ranks, but it's incredibly hard to find information about this online.
Mostly because a lot of people confuse memory channels with memory ranks and this has poisoned the search results.
(Dual channel is faster then Single channel, but if I'm right Dual rank should be slower then Single Rank right?)
TL;DR:
Can anyone tell me the bandwidth and latency differences between 1Rx4 and 2Rx4 DDR4 RDIMM memory?
