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ASRock Rack CEB server motherboard, green PCB with silver LGA 4677 socket, eight DDR5 slots, four full-length PCIe 5.0 x16 slots

ASRock Rack

ASRock Rack SPC741D8-2L2T/BCM server motherboard

SKU CH-2AAK-02H61 MPN SPC741D8-2L2T/BCM

CEB server motherboard supporting 4th and 5th Gen Intel Xeon Scalable CPUs in LGA 4677 socket with eight DDR5 5600 DIMM slots, four PCIe 5.0 x16 slots, dual 10 GbE Broadcom LAN.

  • 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 x DDR5 288-pin
  • Supports 4th and 5th Gen Xeon Scalable processors via LGA 4677 socket
  • Eight DDR5 RDIMM slots deliver up to 2 TB registered memory at 5600 MT/s
  • Four PCIe 5.0 x16 slots with CXL 1.1 enable high-bandwidth accelerator connectivity
  • Dual 10 GbE Broadcom LAN plus 1 GbE Intel LAN for redundant network paths
  • Twelve SATA 6.0 Gb/s ports plus two M.2 slots for dense storage arrays

Single-socket LGA 4677 server board

The ASRock Rack SPC741D8-2L2T/BCM is a CEB form-factor motherboard built for one 4th or 5th Gen Intel Xeon Scalable processor up to 350 W TDP. It uses the Intel C741 chipset and provides eight DDR5 288-pin slots running at 5600 MT/s for a maximum of 2 TB registered memory.

Expansion and networking layout

Four PCIe 5.0 x16 slots with CXL 1.1 support plus two MCIO connectors at PCIe 5.0 x8 serve accelerator or storage cards. A third MCIO connector offers PCIe 3.0 x4 or four SATA 6.0 Gb/s lanes. Dual 10 GbE ports use Broadcom BCM57416 and a separate Intel I210 provides 1 GbE management.

DDR5 registered memory requirement

Only DDR5 RDIMM or RDIMM-3DS modules are supported; unbuffered or older DDR generations will not work. Builders needing unregistered memory or a different memory standard must choose another platform.

Highlights

  • Supports 4th and 5th Gen Xeon Scalable processors via LGA 4677 socket
  • Eight DDR5 RDIMM slots deliver up to 2 TB registered memory at 5600 MT/s
  • Four PCIe 5.0 x16 slots with CXL 1.1 enable high-bandwidth accelerator connectivity
  • Dual 10 GbE Broadcom LAN plus 1 GbE Intel LAN for redundant network paths
  • Twelve SATA 6.0 Gb/s ports plus two M.2 slots for dense storage arrays

Specifications

BrandAsRock Rack
ModelSPC741D8-2L2T/BCM
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 x DDR5 288-pin
Memory StandardDDR5 5600
Maximum Memory Supported2TB
RegisteredYes
PCI Express 5.0 x16SLOT7: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT5: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT3: PCIe5.0 / CXL1.1 x16 [CPU]
SLOT1: PCIe5.0 / CXL1.1 x16 [CPU]
Other Slots2 MCIO (PCIe5.0 x8) [CPU]
1 MCIO (PCIe3.0 x4 or SATA 6Gb/s) [PCH]
SATA12 x SATA 6.0Gb/s
M.21 M-key M2_1 (PCIe3.0 x4 or SATA 6Gb/s), supports 22110/2280/2242 form factor [PCH]
1 M-key M2_2 (PCIe3.0 x4 or SATA 6Gb/s), supports 22110/2280 form factor [PCH]
Onboard Video ChipsetAspeed AST2600
LAN ChipsetBroadcom BCM57416
LAN Speed10Gbps
Second LAN ChipsetIntel I210
Second LAN Speed10/100/1000Mbps
Max LAN Speed2 x 10Gbps + 2 x 1Gbps
Back I/O Ports1 x D-Sub / 2 x USB 3.2 Gen 1 Type-A / 4 x LAN (RJ45)
Onboard USBUSB 3.2 (Gen1) Header: 1 (19-pin, 2 USB3.2 Gen1)
USB 2.0 Header: 1 (9-pin, 2 USB2.0)
Other ConnectorsPower Connector: 1 Micro-Fit (4-pin, ATX PSU signal), 3 (8-pin, ATX 12V)
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
SGPIO Header: 2
HSBP: 1
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1 (contact pads)
Front Lan LED Connector: 1
NMI Header: 1
BIOS FeatureAMI 256Mb SPI Flash ROM
Plug and Play (PnP), ACPI 4.0 and above compliance wake up events, SMBIOS 3.4 and above, ASRock Rack Instant Flash
Form FactorCEB
Dimensions (W x L)12.0" x 10.5"
Shipping weight1.70 kg
Package size361 × 323 × 71 mm

Questions about this item

How do I install a processor into the LGA 4677 socket without bending pins?

Align the CPU triangle marker with the socket corner, lower the load plate gently, then secure the lever evenly — uneven pressure is the step most often done wrong.

What maintenance will the DDR5 RDIMM memory slots need over time?

Reseat modules if ECC errors appear after thermal cycles; the 288-pin contacts can oxidise in humid racks.

Which limit appears first when all four PCIe 5.0 x16 slots run sustained workloads?

The single-socket CPU lane budget saturates before the board’s four x16 slots can each keep full bandwidth.

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