Marvell unveils six-channel CXL memory expanders for AI inference
Marvell introduced its second-generation Structera X 3406 and 3506 CXL 3.2 memory expanders at the OCP Global Summit.
Event / data period: 2026-10-12
Published: · Updated:
Both designs have six DDR4/DDR5 memory channels, which Marvell describes as 50% more than the prior generation. The company lists support for up to 9 TB of DDR4 with the 3406, 6 TB of DDR5 with the 3506, and sharing across as many as four hosts.
The products were demonstrated at the event; Marvell said it expects the controllers to sample in the first quarter of 2027. Capacity and latency benefits are company claims and have not been independently verified here.
Data
Scope of the announced design
Marvell introduced its second-generation Structera X 3406 and 3506 CXL 3.2 memory expanders at the OCP Global Summit.
| DDR4/DDR5 memory channels per controller | 6 |
Methodology
Records memory-channel and capacity limits Marvell announced for the new controllers; this is not an independent product test.
Updated:
Subjects and places
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