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Green rectangular ATX server motherboard with silver CPU socket, eight black DDR4 slots, seven PCIe slots, blue SATA ports

ASRock Rack

ASRock Rack SPC621D8-2L2T server motherboard

SKU CH-WS1D-WTHMK MPN SPC621D8-2L2T

ATX server board with single LGA 4189 socket for 3rd Gen Intel Xeon Scalable CPUs, eight DDR4 3200 RDIMM/LRDIMM slots up to 256 GB per DIMM, four PCIe 4.0 x16 and three PCIe 4.0 x8 slots.

  • CPU Socket TypeSingle Socket P+ (LGA 4189)
  • CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
  • North BridgeIntel C621A
  • Number of DDR4 Slots8 x 288-pin
  • DDR4 StandardDDR4 3200
  • Memory StandardSupported Type: Supports DDR4 288-pin RDIMM, LRDIMM, RDIMM/L
  • Supports 3rd Gen Intel Xeon Scalable processors via LGA 4189 socket
  • Eight DDR4 3200 RDIMM/LRDIMM slots with 3DS and Optane support
  • Four PCIe 4.0 x16 and three PCIe 4.0 x8 expansion slots
  • Dual 10GbE Intel X710-AT2 plus dual 1GbE Intel I210 LAN
  • Two M.2 slots (PCIe 3.0 x4/x1 or SATA 6Gb/s) plus eight SATA 6Gb/s ports

ATX server board for Xeon Scalable

The ASRock Rack SPC621D8-2L2T is an ATX motherboard built around the Intel C621A chipset. It accepts a single LGA 4189 processor from the 3rd Gen Intel Xeon Scalable family. Eight DDR4 slots support RDIMM, LRDIMM, 3DS variants and Intel Optane Persistent Memory 200 series at up to 3200 MHz.

Suits dense compute and storage nodes

Builders who need four full-length PCIe 4.0 x16 slots plus three x8 slots, dual 10 GbE and dual 1 GbE ports, and eight SATA 6 Gb/s connectors will find the I/O coverage sufficient. Systems requiring more than one CPU socket, 10 GbE ports beyond the two provided, or onboard Wi-Fi should evaluate alternative platforms.

Single-socket LGA 4189 constraint

The board only fits one processor in the LGA 4189 socket, so total core count and memory-channel bandwidth are limited to what a single 3rd Gen Xeon Scalable CPU delivers. Multi-socket scaling is not possible on this platform.

Highlights

  • Supports 3rd Gen Intel Xeon Scalable processors via LGA 4189 socket
  • Eight DDR4 3200 RDIMM/LRDIMM slots with 3DS and Optane support
  • Four PCIe 4.0 x16 and three PCIe 4.0 x8 expansion slots
  • Dual 10GbE Intel X710-AT2 plus dual 1GbE Intel I210 LAN
  • Two M.2 slots (PCIe 3.0 x4/x1 or SATA 6Gb/s) plus eight SATA 6Gb/s ports

Specifications

BrandAsRock Rack
ModelSPC621D8-2L2T
CPU Socket TypeSingle Socket P+ (LGA 4189)
CPU TypeSupports 3rd Gen Intel Xeon Scalable processors
North BridgeIntel C621A
Number of DDR4 Slots8 x 288-pin
DDR4 StandardDDR4 3200
Memory StandardSupported Type: Supports DDR4 288-pin RDIMM, LRDIMM, RDIMM/LRDIMM-3DS, Intel Optane Persistent Memory 200 series
Max. DIMM Frequency: 3200MHz
Maximum Memory SupportedMax. Capacity per DIMM:
RDIMM: up to 64GB
RDIMM-3DS: up to 256GB
LRDIMM: up to 128GB
LRDIMM-3DS: up to 256GB
PCI Express 4.0 x16SLOT7: PCIe4.0 x16*
SLOT5: PCIe4.0 x16*
SLOT3: PCIe4.0 x16*
SLOT1: PCIe4.0 x16
* SLOT7/5/3 auto-switch to PCIe4.0 x8 when SLOT6/4/2 occupied
PCI Express x8SLOT6: PCIe4.0 x8
SLOT4: PCIe4.0 x8
SLOT2: PCIe4.0 x8
SATA8 x SATA 6.0Gb/s
M.21 M-key (PCIe3.0 x4 or SATA 6Gb/s), supports 22110/2280/2242 form factor
1 M-key (PCIe3.0 x1 or SATA 6Gb/s), supports 22110/2280/2242 form factor
Onboard Video ChipsetAspeed AST2500
LAN ChipsetAdditional GbE Controller
Intel X710-AT2: 2 RJ45 (10 GbE)
Intel i210: 2 RJ45 (1GbE)
IPMI Dedicated GLAN
1 x Realtek RTL8211E for dedicated management GLAN
LAN Speed10Gbps
Second LAN ChipsetIntel I210
Second LAN Speed10/100/1000Mbps
Max LAN Speed1Gbps
Back I/O PortsUID Button/LED: 1
VGA Port: 1 DB15
USB 3.2 Gen1 Port: 4 Type-A (USB3.2 Gen1)
RJ45: 2 RJ45 (10GbE), 2 RJ45 (1GbE)
Dedicate LAN: 1 dedicated IPMI
Other ConnectorsCOM Header: 1
Auxiliary Panel Header: 1 (18-pin): chassis intrusion, system fault LED, LAN1/LAN2 activity LED, locate, SMBus
TPM Header: 17-pin (LPC) or 13-pin (SPI)
Thermal Sensor Header: 1
IPMB Header: 1
VGA Header: 1
PMBus CONN: 1
Buzzer: 1
Fan Header: 5 (6-pin)
USB 3.2 (Gen1) Header: 1
USB 3.2 (Gen2) Header: 2 for Type-C
USB 2.0 Header: 1
Type A USB 3.2 (Gen1) Port: 1
NMI Header: 1
System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
Speaker Header: 1
BMC_SMB Header: 1
SGPIO Header: 1
VROC KEY: 1
Power Connector: 1 (24-pin, ATX main power), 1 (8
FeaturesATX (12" x 9.6")
Supports 3rd Gen Intel Xeon Scalable Processors
8 DIMM slots (1DPC), supports DDR4 RDIMM, LRDIMM, and Intel Optane Persistent Memory
4 PCIe4.0 x16, 3 PCIe4.0 x8
1 M.2 (PCIe3.0 x4 or SATA 6Gb/s), 1 M.2 (PCIe3.0 x1 or SATA 6Gb/s)
8 SATA 6Gb/s (including 2 ports from M.2)
2 RJ45 (10GbE) by Intel X710-AT2, 2 RJ45 (1GbE) by Intel i210
Remote management (IPMI)
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Shipping weight1.68 kg
Package size356 × 301 × 72 mm

Questions about this item

Does the SPC621D8-2L2T come with a CPU cooler or mounting hardware, or must those be purchased separately?

The motherboard is sold without a CPU cooler or mounting hardware; both must be sourced separately for the LGA 4189 socket.

Which DDR4 module types and capacities are validated on the SPC621D8-2L2T?

The board supports DDR4 3200 RDIMM up to 64 GB, RDIMM-3DS up to 256 GB, LRDIMM up to 128 GB and LRDIMM-3DS up to 256 GB per DIMM.

How do the PCIe 4.0 x16 slots behave when the adjacent x8 slots are populated?

Slots 7, 5 and 3 automatically drop from x16 to x8 electrical when slots 6, 4 or 2 are occupied.

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