Meta's CXL reuse plan shows how DDR4 can stay useful in AI-era servers

The story is notable because it points to a practical response to rising server memory costs: extend the life of installed DDR4 instead of replacing every node with new memory. CXL can help pool or expose older capacity in ways that reduce stranded RAM, especially where workloads need capacity more than maximum bandwidth. If adopted broadly, this kind of reuse could moderate some demand for replacement DIMMs while increasing interest in CXL-enabled platforms and memory expansion hardware.