# Astera Labs Releases Leo 2 CXL Memory Controllers and Leo X Controller for Rackscale Fabric-Attached Memory

DevFeed: [Astera Labs Releases Leo 2 CXL Memory Controllers and Leo X Controller for Rackscale Fabric-Attached Memory](<https://devfeed.tech/articles/astera-labs-releases-leo-2-cxl-memory-controllers-and-leo-x-controller-for-rackscale-fabric-attached-memory-26778.md>)

Original publisher: [Read original article](<https://www.servethehome.com/astera-labs-releases-leo-2-cxl-memory-controllers-and-leo-x-controller-for-rackscale-fabric-attached-memory/>)

Author: Ryan Smith

Published: 2026-09-15T17:00:48Z

Content type: article

Language: en

Sources: [ServeTheHome](<https://devfeed.tech/sources/servethehome.md>)

Topics: [pcie](<https://devfeed.tech/topics/pcie.md>), [systems](<https://devfeed.tech/topics/systems.md>), [datacenter](<https://devfeed.tech/topics/datacenter.md>)

Tags: [astera-labs](<https://devfeed.tech/tags/astera-labs.md>), [cxl](<https://devfeed.tech/tags/cxl.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [ddr4](<https://devfeed.tech/tags/ddr4.md>), [ddr5](<https://devfeed.tech/tags/ddr5.md>), [leo](<https://devfeed.tech/tags/leo.md>), [memory](<https://devfeed.tech/tags/memory.md>), [other-components](<https://devfeed.tech/tags/other-components.md>), [pcie](<https://devfeed.tech/tags/pcie.md>), [releases](<https://devfeed.tech/tags/releases.md>), [server](<https://devfeed.tech/tags/server.md>)

## AI overview

Astera Labs is launching Leo 2 CXL smart memory controllers with DDR4 support and CXL 3.2/PCIe Gen6 connectivity, alongside the Leo-X controller for fabric-attached memory in rack-scale systems.

## Source excerpt

Astera Labs is launching a new generation of Leo smart memory controllers. The Leo 2 series adds support for CXL 3.2 and PCIe Gen6, while the ambitious Leo X brings the ability to attach memory expanders directly to the fabric networks of AI accelerators The post Astera Labs Releases Leo 2 CXL Memory Controllers and Leo X Controller for Rackscale Fabric-Attached Memory appeared first on ServeTheHome.