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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

  • CPU Socket TypeSocket SP5
  • CPU TypeSupports AMD EPYC 9004 (with AMD 3D V-Cache Technology) and
  • Number of Processor Support1
  • Memory Slots8 x DDR5 288-pin
  • Memory StandardDDR5 4800
  • Maximum Memory SupportedMax. Capacity per DIMM - RDIMM: 96GB (2R) - RDIMM-3DS: 512GB
  • 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.

Highlights

  • 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

Specifications

BrandAsRock Rack
ModelGENOAD8UD-2T/X550
Part NumberGENOAD8UD-2T/X550
CPU Socket TypeSocket SP5
CPU TypeSupports AMD EPYC 9004 (with AMD 3D V-Cache Technology) and 97x4 series processors
Number of Processor Support1
Memory Slots8 x DDR5 288-pin
Memory StandardDDR5 4800
Maximum Memory SupportedMax. Capacity per DIMM
- RDIMM: 96GB (2R)
- RDIMM-3DS: 512GB (2S8Rx4)
RegisteredYes
PCI Express 4.0 x16SLOT6: PCIe5.0 / CXL1.1 x16
SLOT5: PCIe5.0 / CXL1.1 x16
SLOT4: PCIe5.0 / CXL1.1 x16
SLOT3: PCIe5.0 / CXL1.1 x16
Other Slots2 MCIO (PCIe5.0 x8)
2 MCIO (PCIe5.0 x8 or 8 SATA 6Gb/s)
1 MCIO (PCIe5.0 x4)
M.22 M-key (PCIe5.0 x4); support 2280/2260/2242/2230 form factor
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel X540-AT2
LAN Speed10Gbps
Max LAN Speed2 x 10Gbps
Back I/O 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 USBUSB 3.2 (Gen1) Header: 1 (19-pin, 2 USB3.2 Gen1)
Other ConnectorsPower Connector: 1 (4-pin, ATX PSU signal) w/ ATX 24-pin adapter cable, 3 (8-pin, ATX 12V) support 12V DC-in
Other Power Connectors: 1 (6-pin) for HDD power
Auxiliary Panel Header: 1 (18-pin): chassis intrusion, system fault LED, LAN1/LAN2 activity LED, locate, SMBus
System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
COM Header: 1
Speaker Header: 1 (4-pin)
Fan Header: 6 (6-pin)
Thermal Sensor Header: 1
TPM Header: 1 (13-pin, SPI)
SGPIO Header: 2
HSBP: 1
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1 (contact pads)
NMI Header: 1
Dimensions (W x L)10.4" x 10.5"
Shipping weight1.70 kg
Package size267 × 264 × 74 mm

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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