Penguin Solutions has introduced the CXL 8F2W D4, an expansion card built to expand enterprise server memory using Compute Express Link protocols. The hardware connects through a Marvell StructeraX controller to run 8 channels of DDR4 RDIMM memory on a PCIe Gen5 bus. This card lets data centers repurpose existing DDR4 memory in modern DDR5 servers, though official pricing remains unannounced.
The board uses a full height half length form factor that fits into standard server racks. It links to the host system across 16 lanes of PCIe Gen5 and CXL Gen2. Inside the card, the Marvell StructeraX memory controller translates host requests directly to legacy memory modules. This layout provides 8 distinct memory channels operating at 1 DIMM per channel.
Upgrading data centers to pure DDR5 infrastructure creates steep hardware costs. This expansion card bypasses that issue by allowing operators to install existing DDR4 inventory into new server setups to increase total memory pool size. Penguin Solutions runs each module through a strict hardware screening and qualification program to maintain system stability under heavy server loads.
