As the new CUDIMM (Clocked Unbuffered Dual Inline Memory Module) DDR5 RAM being to emerge in the market, it is widely believed that Intel will be the first adopt the new memory standard with its upcoming Arrow Lake lineup – the situation is less clear for AMD due to its Ryzen CPU’s inherent memory limitations. However, MSI has clarified on this.
CUDIMM For AMD Platforms
CUDIMM RAM differ from the standard RAM where a special clock driver (CKD) is utilized to regenerate the clock signal for the modules – this enables greater stability, and in turn, headroom for faster memory clock speeds. The modules announced so far has reached up to 9,600MT/s, with future models set to break the 10,000MT/s barrier.
However, we all know Ryzen has a fairly restrictive memory support in that you can’t go beyond 6,400MT/s even in the best case scenarios, unless you decouple the the UCLK:MCLK ratio to 1:2, which does incur some performance penalties (unless the memory is fast enough to overcome it). MSI’s in-house overclocker TOPPC noted that CUDIMM is supported for AMD systems, and it can be run on 8,000MT/s just fine, but there are some compatibility issues to work on.
Right now, only Ryzen 9000 and Ryzen 8000 systems will support CUDIMMs, with some caveats: the overclocker claimed that the boot phase will force the memory clock speed to run as low as 3,600MT/s before attempting to run at the high clock speed these modules can produce. Ryzen 7000 is currently unsupported for compatibility reasons, but future AGESA updates should improve on this.
Source: Videocardz
Pokdepinion: I expect these new modules to be expensive, so it’s unlikely to be the mainstream option until several years down the line.
