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Green rectangular EEB server motherboard with dual LGA 3647 sockets, sixteen DDR4 slots, four PCIe x16 slots

ASRock Rack

ASRock Rack EP2C621D16-4LP EEB server motherboard dual socket LGA 3647

SKU CH-FP0P-9V1X0 MPN EP2C621D16-4LP

Dual-socket EEB server motherboard with 16 DDR4 slots, 14 SATA3 ports, four PCIe 3.0 x16 and two PCIe 3.0 x8 slots, plus dedicated IPMI LAN

  • CPU Socket TypeDual Socket P
  • CPU TypeSupports 2nd Gen. Intel Xeon Scalable Processors / Intel Xeo
  • North BridgeIntel C621
  • Number of DDR4 Slots16 x 288-pin
  • DDR4 StandardSupport DDR4 2933 / 2666 / 2400 / 2133 RDIMM / LR DIMM, Inte
  • Channel SupportedQuad Channel
  • Dual LGA 3647 sockets enable two Xeon CPUs for parallel workloads
  • 16 DDR4 slots support RDIMM and LRDIMM up to 2933 MT/s
  • 14 SATA3 ports plus one M.2 slot provide dense storage connectivity
  • Four PCIe 3.0 x16 and two x8 slots allow multiple accelerators
  • Dedicated IPMI 2.0 LAN and Aspeed AST2500 give remote management access

Dual-socket EEB server board

The ASRock Rack EP2C621D16-4LP is a dual-socket EEB motherboard built around the Intel C621 chipset for LGA 3647 Xeon processors. It targets data-centre deployments that need high core counts and large memory capacity in a 12 by 13 inch form factor. Sixteen DDR4 DIMM slots and fourteen SATA3 ports provide the density required for virtualisation hosts and storage nodes.

Workload fit and limits

This board suits operators who need two Xeon Scalable CPUs, quad-channel memory and multiple PCIe 3.0 x16 slots for accelerators or network cards. It is not for builds that require more than two sockets, integrated networking faster than 1 GbE, or a form factor smaller than EEB.

Deciding specification

The sixteen DDR4 slots set the maximum memory capacity and channel population rules for the platform. Populating all slots with supported RDIMMs or LRDIMMs determines whether the system meets the memory footprint of the target workload.

Points forts

  • Dual LGA 3647 sockets enable two Xeon CPUs for parallel workloads
  • 16 DDR4 slots support RDIMM and LRDIMM up to 2933 MT/s
  • 14 SATA3 ports plus one M.2 slot provide dense storage connectivity
  • Four PCIe 3.0 x16 and two x8 slots allow multiple accelerators
  • Dedicated IPMI 2.0 LAN and Aspeed AST2500 give remote management access

Caractéristiques

BrandAsRock Rack
ModelEP2C621D16-4LP
CPU Socket TypeDual Socket P
CPU TypeSupports 2nd Gen. Intel Xeon Scalable Processors / Intel Xeon Scalable Processors
North BridgeIntel C621
Number of DDR4 Slots16 x 288-pin
DDR4 StandardSupport DDR4 2933 / 2666 / 2400 / 2133 RDIMM / LR DIMM, Intel Optane DC Persistent Memory in memory mode (Cascade Lake only)
Channel SupportedQuad Channel
PCI Express 3.0 x164
PCI Express x82 x PCIe 3.0 x8
Other SlotsNVMe: 1 x M.2 slot
SATAIntel C621: 14 x SATA3 (including 2 x SATA DOM ports and 2 x SATA which switch w/ 1 x M.2 ports)
Onboard Video ChipsetAspeed AST2500
Number of LAN4 x RJ45 GLAN by Marvell 88E1543
1 x RJ45 Dedicated IPMI LAN port
COM1
Video Ports1 x D-Sub
RJ454+1 (IPMI 2.0)
LAN Ports with LED (ACT / LINK LED and SPEED LED)
USB 3.04 x USB 3.0
Other ConnectorsSATA DOM: 2 (SSATA)
M.2: 1(M key 2230/224/22260/2280, supports PCIe(x4)/SATA)
Auxiliary Panel Header: 1 (includes chassis intrusion, location button & LED, front LAN LED)
TPM Header: 1
IPMB Header: 1
VGA Header: 1
Buzzer: 1
Fan Header: 2x CPU Fan (4-pin), 4x system Fan (6-pin)
ATX Power: 1 (24-pin) + 2 (8-pin)
USB 3.2 (Gen1) Header: 1 ( support 2 USB 3.0)
Type A USB 2.0 Port: 1
Form FactorEEB
Dimensions (W x L)12.0" x 13.0"
Poids d’expédition2.22 kg
Dimensions du colis386 × 363 × 71 mm

Questions sur cet article

How much memory can the board actually address when all 16 DDR4 slots are populated?

The board provides 16 DDR4 slots in a quad-channel layout; maximum capacity depends on the DIMMs installed and the processor memory controller.

What does the M.2 slot share bandwidth with and how does that affect drive choice?

The M.2 slot shares two SATA3 ports; using a SATA M.2 drive disables those ports while an NVMe M.2 drive leaves them free.

What clearance does the EEB 12"x13" form factor need in a chassis?

The board measures 12 by 13 inches and requires a chassis that supports the EEB form factor with matching mounting holes.

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