MSI has confirmed that the new motherboards based on AMD X870 and X870E chipsets support the new CUDIMM type of RAM modules. Such modules differ from conventional ones by the presence of a built-in clock generator, which allows the RAM to operate more stable at high frequencies. Several RAM manufacturers have already introduced CUDIMM modules with stated speeds of 9200 to 9600 MT/s.
Earlier it became known that the new Intel Arrow Lake-S platform will support CUDIMM memory through Gear 2 mode. This raised many questions about whether AMD’s Socket AM5 platform will also support such memory. Thanks to MSI, we now know that yes, it will. However, component compatibility depends on the RAM, motherboard, and processor used.
MSI shared information about CUDIMM memory support on its X870 motherboards at a recent press event. In particular, the manufacturer announced cosmetic changes in the RAM slots of its new motherboards for better signal transmission (the physical dimensions and pin layout of CUDIMMs are identical to conventional DDR5 DIMMs) and confirmed support for CUDIMM in Ryzen 8000 and Ryzen 9000 processors. The reason for the change in RAM slot design , as reported by MSI’s in-house overclocker under the pseudonym TOPPC as part of the MSI stream, is due to the manufacturer’s desire to improve signal integrity at high frequencies.
According to him, incompatibility problems do not yet allow the implementation of CUDIMM support for Ryzen 7000 processors. However, the overclocker believes that support for such modules in the Ryzen 7000 could be added in the future. However, this has not yet been confirmed.
He also said that motherboards with CUDIMM memory installed may run the memory at a lower frequency than stated when first started. However, the settings for the declared memory frequency can be set manually or automatically (apparently through overclocking profiles) through the board’s BIOS. There is no more detailed information about support for the new type of memory yet, since the CUDIMM modules themselves have not yet appeared on sale.
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