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MSI confirms X870 motherboards will support DDR5 CUDIMMs

CUDIMM has emerged as a game-changing innovation, offering a CPU-decoupled CDK clock driver that enhances signal integrity and allows memory makers to achieve higher frequencies independent of the memory controller. With support for speeds starting at 6400 MT/s, CUDIMM promises improved stability and reliability at higher rates. Some memory kits using CUDIMMs are already hitting the market at 9200 to 9600 MT/s, and plans to launch 10,000 MT/s kits are already in motion.

The recent announcement that Intel's Arrow Lake-S platform will support CUDIMMs via the GEAR 2 option has raised questions about AMD's future platform compatibility. AMD's X870 boards will also support CUDIMMs, with compatibility varying depending on the RAM, motherboard, and CPU.

This information comes from MSI (via VideoCardz), which recently announced in a press event that the Ryzen 9000 and 8000 series would support DDR5-8400(+) memory, which was only possible by adjusting the memory slot architecture. As for the Ryzen 7000 series, according to MSI's in-house overclocker TOPPC, CUDIMM is currently not compatible with the CPU series.

The overlocker explained that an incompatibility issue prevents CUDIMM memory from functioning on Ryzen 7000 CPUs. He speculates that future support for the Ryzen 7000 may be possible, with the potential for motherboards with CUDIMM to start at a lower frequency, which can be manually or automatically adjusted to the supported speed. However, further information is currently unavailable due to the scarcity of CUDIMM memory in the market.

KitGuru says: Do you think AMD's platforms can benefit from using CUDIMM running at such high speeds, or will it be better to maintain the 1:1 ratio between the memory's speed and the Infinity Fabric?

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