SK Hynix already makes MCRDIMMs, and you can see the demonstration of the approach below.įor whatever reason, all of the AMD A620 chipset based motherboards that were announced on Friday, are not showing off the capabilities of the chipset and are in fact making it look worse than it is. However, Intel's technology is expected to see the light of the day as early as 2024/2025 and beyond the generation of servers, with Granite Rapids likely representing a contender for this technology. ![]() Additionally, Intel has a similar solution called Multiplexer Combined Ranks DIMM (MCRDIMM) which uses a similar approach. We expect third-generation MRDIMMs after 2030, so the project is still far away. First-generation MRDIMMs can produce speeds of up to 8,800 MT/s, while the second and third generations modules can go to 12,800 MT/s and 17,600 MT/s, respectively. ![]() The design also allows simultaneous access to both ranks of memory, thanks to the added mux. To efficiently use it, a special data mux or buffer will effectively take two Double Data Rate (DDR) DIMMs and convert them into Quad Data Rate (QDR) DIMMs. Specifically, if you take two DDR5 DIMMs running at 4,400 MT/s and connect them to create a single DIMM, you get 8,800 MT/s speeds on a single module. It combines two DDR5 DIMMs on a single module to effectively double the bandwidth. The concept of MRDIMM is, on paper, straightforward. However, engineers of JEDEC, with the help of AMD, have come to make a new standard that will try and solve this challenge using the new MRDIMM technology. ![]() Incorporating on-package memory solutions like HBM is expensive and can only scale to a specific memory capacity. Adding more memory is difficult, as motherboards can only get so big. The constant need for bandwidth in server systems provides trouble that can not easily be solved. AMD and JEDEC are collaborating to create a new industry standard for DDR5 memory called MRDIMMs (multi-ranked buffered DIMMs).
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