Structera X 3406 / 3506
Marvell's second-generation CXL 3.2 memory expanders, the industry's first six-channel design, supporting up to 9TB of pooled memory per controller for AI inference.
Overview
Marvell announced the second-generation Structera X 3406 and 3506 CXL 3.2 memory expanders on October 12, 2026, billed as the industry's first six-channel CXL 3.2 memory expanders. The controllers add inline LZ4 compression and PCIe Gen 6 connectivity, targeting memory capacity and bandwidth bottlenecks in AI inference systems. Sampling is expected in Q1 2027.
This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.
Key features
- Six DDR4/DDR5 memory channels per controller, a 50% increase over the prior generation
- Structera X 3406 supports up to 9TB of DDR4 memory via 18 RDIMM slots; Structera X 3506 supports up to 6TB of DDR5 via 12 RDIMM slots
- PCIe Gen 6 connectivity, supporting up to 4 hosts at up to 256GB/s bandwidth
- Inline LZ4 compression/decompression at up to 250GB/s throughput, 5x the previous generation
- Compression can yield 2-3x effective memory capacity depending on workload
Use cases
- Memory pooling/expansion for large-model AI inference servers
- Reducing DRAM cost-per-GB in memory-bound inference workloads
- Multi-host shared memory architectures in AI data centers
Pricing
Not disclosed; component sampling expected Q1 2027.
Pricing reflects the source record and may change. Confirm current terms with the provider.
Dates and sources
- Released
- 12 Oct 2026
- Record updated
- 13 Oct 2026
- Record last checked
- 13 Oct 2026
- investor.marvell.com/news-events/press-releases/detail/1037/marvell-unveils-second-generation-structera-x-industry-first-six-channel-cxl-3-2-memory-expanders-for-ai-inference
- servethehome.com/marvell-structera-x-3406-and-3506-cxl-3-2-memory-expanders/
- embedded.com/marvell-introduces-six-channel-cxl-3-2-memory-expanders