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Deep Micro-ATX server motherboard with LGA 4677 socket, eight DDR5 slots, four PCIe 5.0 x16 slots, dual 10G LAN ports, green PCB

ASRock Rack

ASRock Rack SPC741D8UD-2T/X550 server motherboard LGA 4677 8 DDR5 slots 4 PCIe 5.0 x16 dual 10G LAN

SKU CH-6V76-EXBWN MPN SPC741D8UD-2T/X550

Deep Micro-ATX server board with single LGA 4677 socket, eight DDR5 DIMM slots, four PCIe 5.0 x16 slots, dual 10GbE LAN and IPMI

  • CPU Socket TypeLGA 4677
  • CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
  • Number of Processor Support1
  • CPU FeaturesThermal Design Power 350W
  • North BridgeIntel C741
  • Memory Slots8 DIMM slots (1DPC) DDR5 288-pin
  • Supports 4th and 5th Gen Intel Xeon Scalable processors via LGA 4677 socket
  • Eight DDR5 DIMM slots deliver up to 5600 MT/s memory speed
  • Four PCIe 5.0 x16 slots with CXL 1.1 enable high-bandwidth expansion
  • Dual 10 GbE LAN powered by Intel X550-AT2 controller
  • Compact Deep Micro-ATX form factor measures 10.4 by 10.5 inches

Deep Micro-ATX Server Motherboard

The ASRock Rack SPC741D8UD-2T/X550 is a Deep Micro-ATX server motherboard built for single-socket Intel Xeon Scalable processors. It uses the LGA 4677 socket and Intel C741 chipset. The board targets dense 1U or 2U systems needing high core counts and fast I/O.

Suits high-density compute nodes.

This board suits builders assembling high-density compute or storage nodes with a single 350 W TDP processor. It is not for deployments that require dual-socket scaling or more than four full-length PCIe 5.0 x16 add-in cards.

Four PCIe 5.0 x16 slots with CXL 1.1

The defining specification is four PCIe 5.0 x16 slots that also support CXL 1.1, all wired directly to the CPU. This layout decides whether the board can host the GPU, accelerator or high-speed NIC complement your workload demands.

Highlights

  • Supports 4th and 5th Gen Intel Xeon Scalable processors via LGA 4677 socket
  • Eight DDR5 DIMM slots deliver up to 5600 MT/s memory speed
  • Four PCIe 5.0 x16 slots with CXL 1.1 enable high-bandwidth expansion
  • Dual 10 GbE LAN powered by Intel X550-AT2 controller
  • Compact Deep Micro-ATX form factor measures 10.4 by 10.5 inches

Specifications

BrandAsRock Rack
ModelSPC741D8UD-2T/X550
CPU Socket TypeLGA 4677
CPU Type4th Gen Intel Xeon Scalable / 5th Gen Intel Xeon Scalable
Number of Processor Support1
CPU FeaturesThermal Design Power 350W
North BridgeIntel C741
Memory Slots8 DIMM slots (1DPC) DDR5 288-pin
Memory Standard5600 MT/s on 5th Gen Intel Xeon Scalable Processors
4800 MT/s on 4th Gen Intel Xeon Scalable Processors
*Memory speed and capacity support varies by CPU SKU
Maximum Memory SupportedMax. Capacity per DIMM
- RDIMM: 96GB
- RDIMM-3DS: 2H- 128 GB / 4H- 256 GB
RegisteredYes
PCI Express 5.0 x16SLOT7: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT6: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT5: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT4: PCIe5.0 / CXL1.1 x16 [CPU]
(SLOT7 close to CPU)
Other Slots2 MCIO (PCIE5.0 x8) [CPU]
SAS1 Mini-SAS HD 8i for 8 SATA, 1 M.2
M.21 x M-key (PCIe3.0 x4 or SATA 6Gb/s); support 2280 form factor [PCH]
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel X550-AT2
LAN Speed10Gbps
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 USBType A USB 2.0 Port: 1 header (9-pin, 2 USB2.0)
Other ConnectorsPower Connector: 1 Mirco-Fit (4-pin, ATX PSU signal) w/ ATX 24-pin adapter cable, 3 (8-pin, ATX 12V) support 12V DC-in
Other Power Connectors: 1 Mirco-Fit (6-pin) for HDD power when using 12V DC-in power source
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 (9-pin)
Speaker Header: 1 (4-pin)
Fan Header: 6 (6-pin)
Thermal Sensor Header: 1
TPM Header: 1 (13-pin, SPI)
VROC header: 1
HSBP: 1
SMBus header: 2
PMBus header: 1
IP
Form FactorDeep Micro-ATX
Shipping weight1.36 kg
Package size267 × 264 × 51 mm

Questions about this item

What chassis clearance does the 10.4 x 10.5 inch Deep Micro-ATX board need?

The board fits a Deep Micro-ATX layout measuring 10.4 by 10.5 inches; verify the chassis supports this exact footprint and the LGA 4677 socket keep-out zone before mounting.

Which CPU power limit must the cooler handle during installation?

Install a cooler rated for the 350 W thermal design power of the supported Xeon processors; the common mistake is using a lower-TDP heatsink that cannot dissipate the full load.

What maximum RDIMM-3DS capacity per slot should I plan for future upgrades?

Each DDR5 slot accepts up to 256 GB RDIMM-3DS (4H) modules, allowing a total of 2 TB across the eight 288-pin slots when populated with supported Xeon CPUs.

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