ASRock Rack, a subsidiary of ASRock that specialises in server-grade hardware, has presented an Intel Diamond Rapids motherboard boasting 16 DDR5 slots. Called the DMRD16-2L+, this board supports up to 4TB of memory on board with a single CPU socket, all while maintaining size compatible with consumer desktop cases.
Spotted at the OCP Global Summit 2026 by ServeTheHome, the DMRD16-2L+ is designed for Intel’s next-gen Xeon 7 Diamond Rapids processors, supporting up to 16 DDR5 memory channels in a one-DIMM-per-channel layout. Each DIMM slot can be filled with either a 128GB 8,000MT/s RDIMM module, a 128GB 12,800MT/s MRDIMM module, or a 256GB 12,800MT/s MRDIMM 2U module.
Populating all 16 slots with their maximum capacity sticks results in a whopping 4,096GB (4TB) of DDR5 memory on a single-socket system, an amount that’s almost unfathomable.
While this is higher than the maximum RAM support on the recently announced Gigabyte WRX90 AI TOP, if we compare server-grade platforms, AMD comes back swinging thanks to its SP5 socket, which supports up to 6TB of DDR5 memory spread across 24 DIMM slots. But at this point, who’s counting?
On the subject of counting, based on the median price of 256GB RDIMM DDR5 modules ($9,212), 4TB would cost an eye-watering $147,392. And we’re not even talking about fancy and fast DDR5-8000+ modules either; this price is an average of different speeds, including DDR5-4800. On top of hitting a massive capacity that will undoubtedly please AI developers, populating all the slots also ensures impressive bandwidth figures, reaching 1.6TB/s in theory.
Most notably, the ASRock Rack DMRD16-2L+ fits all this hardware onto a 12x13in EEB PCB, which is about the size of a large E-ATX board, meaning it can even sit inside a consumer PC case. Because of this, ASRock Rack went with an unusual expansion layout, with no standard PCIe slots.
All internal I/O links go through 16 MCIO x8 connectors, totalling 128 PCIe lanes, each rated for PCIe 6.0 or CXL 3.0. The rest of the connection options are fairly standard, with one PCIe Gen 5 M.2 slot for internal storage, two 1GbE ports, plus an Aspeed AST2700 controller for server management.
Intel is expected to release its Xeon 7 Diamond Rapids processor family in 2027, succeeding the Granite Rapids lineup. The CPUs are expected to pack up to 256 cores, manufactured using Intel’s 18A-P node.
