> Also if the new module is not exactly the same as the previous ones you can very easily run into stability issues. Even with the same module, syncing up 4 mo

> Also if the new module is not exactly the same as the previous ones you can very easily run into stability issues. Even with the same module, syncing up 4 modules to rated speed is going to be a challenge to boot, let alone have it be stable. If you want density, a platform that supports RDIMMs is the way to go with DDR5.