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Deep Micro-ATX server motherboard with SP5 socket and dual 10GbE ports

ASRock Rack

ASRock Rack GENOAD8UD-2T/X550 server motherboard SP5 DDR5 dual 10GbE

SKU CH-B8BZ-XJ4DJ MPN GENOAD8UD-2T/X550

Deep Micro-ATX server board for one AMD EPYC 9004 CPU with eight DDR5 slots, four PCIe 5.0 x16 slots, two 10 GbE ports and sixteen SATA connectors

  • ProcessorSupports AMD EPYC 9004 (with AMD 3D V-Cache Technology) and
  • CPU socketSocket SP5
  • Network speed10 Gbit/s
  • Supported CPU count1
  • RAM slots8 x DDR5 288-pin
  • Supported memoryDDR5 4800
  • Supports AMD EPYC 9004 series processors on SP5 socket
  • Eight DDR5 RDIMM slots with 1 DPC topology
  • Four PCIe 5.0 x16 slots with CXL 1.1 support
  • Dual 10GbE LAN via Intel X550-AT2 controller
  • Deep Micro-ATX form factor at 10.4 x 10.5 inches

Single-socket SP5 server board

The ASRock Rack GENOAD8UD-2T/X550 is a Deep Micro-ATX motherboard built for one AMD EPYC 9004 series processor in an LGA 6096 socket. It targets density-focused deployments that need high core counts and dual 10GbE networking in a compact footprint.

Sustained-load behaviour

Eight DDR5 RDIMM slots run at 4800 MT/s with registered DIMMs up to 96 GB each and 3DS modules up to 512 GB, feeding four PCIe 5.0 x16 slots that also support CXL 1.1. Dual Intel X550-AT2 controllers deliver two 10GbE RJ45 links, while MCIO connectors provide additional PCIe 5.0 x8 lanes or up to eight SATA 6Gb/s ports for storage arrays that must maintain throughput over long periods.

Pre-order checklist

Verify that your chassis accepts the 10.4 by 10.5 inch Deep Micro-ATX form factor and can supply three 8-pin EPS12V connectors plus the 24-pin ATX adapter cable included with the board. Confirm you have DDR5 RDIMM or RDIMM-3DS modules from the qualified vendor list and an AMD EPYC 9004 or 97x4 series CPU, as no other processor families are supported.

How it compares

Measured against everything we stock in Server & Workstation Boards, at today’s prices. Recalculated every night.

Price $873.99
Pricier than about 91% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameAsRock Rack
Model nameGENOAD8UD-2T/X550
Part numberGENOAD8UD-2T/X550
Processor
ProcessorSupports AMD EPYC 9004 (with AMD 3D V-Cache Technology) and 97 × 4 series processors
CPU socketSocket SP5
Supported CPU count1
Memory
RAM slots8 x DDR5 288-pin
Supported memoryDDR5 4800
Max supported RAMMax. Capacity per DIMM
- RDIMM: 96 GB (2R)
- RDIMM-3DS: 512 GB (2S8Rx4)
Storage
M.2 slots2 M-key (PCIe5.0 x4); support 2280/2260/2242/2230 form factor
Graphics
Onboard video chipAspeed AST2600
Connectivity
Network speed10 Gbit/s
Ethernet controllerIntel X540-AT2
Maximum network speed2 × 10 Gbit/s
Ports & slots
PCIe 4.0 x16 slotsSLOT6: PCIe5.0 / CXL1.1 x16
SLOT5: PCIe5.0 / CXL1.1 x16
SLOT4: PCIe5.0 / CXL1.1 x16
SLOT3: PCIe5.0 / CXL1.1 x16
Additional slots2 MCIO (PCIe5.0 x8)
2 MCIO (PCIe5.0 x8 or 8 SATA 6Gb/s)
1 MCIO (PCIe5.0 x4)
Rear panel portsUID Button/LED: 1 UID button w/ LED
VGA Port: 1 DB15 (VGA)
USB 3.2 Gen1 Port: 2 Type-A (USB3.2 Gen1)
RJ45: 2 RJ45 (10GbE)
1 dedicated IPMI
Onboard USB headersUSB 3.2 (Gen1) Header: 1 (19-pin, 2 USB3.2 Gen1)
Size & build
Width and length10.4 in × 10.5 in
Shipping weight1.70 kg
Package size267 × 264 × 74 mm
More details
Registered statusYes

Questions about this item

How much power does the Intel X550-AT2 dual 10GbE controller draw under sustained load?

The Intel X550-AT2 controller is rated at 12 W typical power consumption.

Which memory modules are validated for the 8 DDR5 slots on this board?

The QVL lists Micron 16 GB, 32 GB and 64 GB DDR5 4800 RDIMM, plus V-Color 16 GB, 24 GB, 32 GB, 48 GB and 64 GB DDR5 5600 RDIMM, and Apacer 16 GB DDR5 4800 and 5600 RDIMM.

Can I keep my existing PCIe 4.0 x16 add-in cards in the four full-length slots?

The four x16 slots run at PCIe 5.0 / CXL 1.1 and are backward compatible with PCIe 4.0 cards at x16 width.

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