Posted on Monday, October 22 2018 @ 13:11 CEST by Thomas De MaesschalckAnandTech writes each of the 36 memory packages feature four single-die 16Gb components, which are interconnected using a through-silicion vias (TSVs). The module is octal ranked as it has two physical ranks and four logical ranks. The site says it's interesting to see that it's RDIMM, and not LRDIMM:
On a bit more of a technical note here, it's very interesting to point out that these new DIMMs are Registered DIMMs (RDIMMs) and not Load-Reduced DIMMs (LRDIMMs). Normally, LRDIMMs are required for high capacity configurations, with these style DIMMs relying on additional buffering that hurts power consumption and latency versus RDIMMs. Instead, because the latest server platforms (AMD EPYC, Intel Xeon Scalable, etc.) have shifted their memory requirements to natively support support octal-ranked modules in both slots - at the cost of being limited to two slots per channel in total - LRDIMMs are not necessary to maximize the memory capacities of these new servers. As a result, simpler RDIMMs can be used instead. I suspect this is a big reason why Samsung decided to go with a 256 GB RDIMMs, as they are a natural pairing with the latest servers.Pricing is unknown but considering that 128GB LRDIMMs from Crucial are listed for $3,300 you can get a pretty basic idea..
