CXL isn't replacing system ram, it's just allowing you to have slow (compared to ram) connection to a big chunk of ram that's wicked fast (compared to storage).

CXL isn't replacing system ram, it's just allowing you to have slow (compared to ram) connection to a big chunk of ram that's wicked fast (compared to storage). So you could for instance buy 16 nodes with 256GB ram then buy a couple 8TB connect CXL units. Then as needs dictate you could add any fraction of the CXL connected ram to any of those systems. Nobody is ditching CPU connected ram for CXL.