ASRock Rack Shows Early Xeon 7 "Diamond Rapids" Motherboard for Up to 4 TB of DDR5
ASRock Rack is promising up to 4 TB of DDR5 on a single socket with its DMRD16-2L+, one of the first motherboards built for Intel's upcoming Xeon 7…
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ASRock Rack unveiled the DMRD16-2L+, a motherboard for Intel's upcoming Xeon 7 "Diamond Rapids" processors, capable of supporting up to 4 TB of DDR5 memory. The board features 16 DIMM slots arranged in a one-per-channel configuration matching Intel's 16-channel memory design. Maximum capacity is achieved by populating all slots with 256 GB MRDIMMs running at 12,800 MT/s, delivering theoretical bandwidth around 1.6 TB/s.
The board was displayed at the OCP Global Summit 2026 and uses an unconventional expansion approach. Instead of standard PCIe slots, it provides 16 MCIO x8 connectors supporting PCIe 6.0 or CXL 3.0, totaling 128 lanes. Additional connectivity includes one PCIe 5.0 x4 M.2 slot, two Gigabit Ethernet ports, an ASPEED AST2700 BMC, and VGA output, all fitting on a 12 by 13-inch EEB form factor.
The motherboard targets server deployments and high-memory workstations for local AI applications. Intel's Xeon 7 family is scheduled for 2027 release on the new LGA9324 socket. ASRock Rack has not disclosed pricing or availability details for the DMRD16-2L+.
What happened
ASRock Rack is promising up to 4 TB of DDR5 on a single socket with its DMRD16-2L+, one of the first motherboards built for Intel's upcoming Xeon 7 "Diamond Rapids" processors. The board was shown at the OCP Global Summit 2026 and has since been detailed by ServeTheHome. It has 16 DIMM slots in a one-DIMM-per-channel layout, matching the 16-channel memory setup Intel detailed at HOT CHIPS. Regular RDIMMs top out at 128 GB per module and 8000 MT/s, while MRDIMMs run at up to 12,800 MT/s, with taller 2U MRDIMMs reaching 256 GB each. Populate all 16 slots with those, and you hit 4 TB, along with a theoretical bandwidth of roughly 1.6 TB/s. Expansion is unusual, with no standard PCIe slots and no OCP NIC 3.0 connector.
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