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Which Generation of Intel® Xeon® Scalable Processors Support Compute Express Link (CXL) and PCIe* 5.0?

Content Type: Compatibility | Article ID: 000059219 | Last Reviewed: 06/11/2025

Description Resolution Additional information

Description

Unable to determine if Intel® Xeon® supports Compute Express Link (CXL) and PCIe* 5.0.
Need to build a heterogeneous memory system which needs CPI/CXL features to maintain cache coherence and fast virtual-to-physical address translation via TLB instead of software translation.

Support for CXL and PCIe* 5.0 is available in the following Processors:

Generation	CXL	*PCIe 5.0**
1st Generation Intel® Xeon® Scalable Processors	Not Supported	Not Supported
2nd Generation Intel® Xeon® Scalable Processors	Not Supported	Not Supported
3rd Generation Intel® Xeon® Scalable Processors	Not Supported	Not Supported
4th Generation Intel® Xeon® Scalable Processors	Supported	Supported
5th Generation Intel® Xeon® Scalable Processors	Supported	Supported
Intel® Xeon® 6	Supported	Supported

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This article applies to 6 products.

5th Gen Intel® Xeon® Scalable Processors 2nd Gen Intel® Xeon® Scalable Processors Intel® Xeon® Scalable Processors 3rd Gen Intel® Xeon® Scalable Processors 4th Gen Intel® Xeon® Scalable Processors Intel® Xeon® 6

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