Meta Unveils Vistara Chip Tech, Reuses DDR4 from Old Servers in New Systems

According to foreign reports, Meta has developed a memory reuse technology called "Vistara" that breaks through the limitations of existing CXL kits and enables mixed use of multiple memory types in a single machine. The technology allows DDR4 memory removed from old servers to be reconnected to new servers, and leverages its self-developed CXL (Compute Express Link) technology to share memory across different applications while minimizing the additional latency caused by cross-application sharing. It is said that the core design of the Vistara ASIC connects DDR4 memory to the host processor via a CXL 2.0/1.1-compliant PCIe Gen5 x16 interface. Meta has already deployed this CXL technology across its hyperscale infrastructure, which comprises millions of servers.