Memory in non-ECC M.2 slot
Memory in non-ECC M.2 slot
I checked if your MSI B450 Tomahawk Max II supports ECC memory. You can get quality ECC modules for around $40 that fit a 4x16GB configuration.
It’s another method to boost capacity within a single DIMM slot and on the memory controller. The process shifts some calculations from the controller to the memory modules, enabling greater total storage at the cost of increased power usage and slower response times. The motherboard and CPU must fully support this feature, and it mainly works with Xeon and Epyc platforms. Details about its operation might be outdated, but that’s how it impacts performance.
As long as the drives are Unbuffered (UDIMM) and not Registered (RDIMM), ECC support should function. Whether you get ECC depends on the specific model, though it's confirmed for the AMD PRO series and generally available. It's worth noting that RDIMM systems won't POST at all.