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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

  • ProcessorSupports 2nd Gen. Intel Xeon Scalable Processors / Intel Xeo
  • Form factorEEB
  • CPU socketDual Socket P
  • ChipsetIntel C621
  • Number of DDR4 slots16 × 288-pin
  • DDR4 memory supportSupport DDR4 2933 / 2666 / 2400 / 2133 RDIMM / LR DIMM, Inte
  • 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.

How it compares

Measured against everything we stock in Server & Workstation Boards, at today’s prices. Recalculated every night.

Price $450.99
Pricier than about 77% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameAsRock Rack
Model nameEP2C621D16-4LP
Processor
ProcessorSupports 2nd Gen. Intel Xeon Scalable Processors / Intel Xeon Scalable Processors
CPU socketDual Socket P
ChipsetIntel C621
Memory
DDR4 memory supportSupport DDR4 2933 / 2666 / 2400 / 2133 RDIMM / LR DIMM, Intel Optane DC Persistent Memory in memory mode (Cascade Lake only)
Memory channelsQuad Channel
Storage
SATA portsIntel C621: 14 x SATA3 (including 2 x SATA DOM ports and 2 x SATA which switch w/ 1 x M.2 ports)
Graphics
Onboard video chipAspeed AST2500
Connectivity
Number of LAN4 x RJ45 GLAN by Marvell 88E1543
1 x RJ45 Dedicated IPMI LAN port
Ports & slots
Number of DDR4 slots16 × 288-pin
PCIe 3.0 x16 slots4
Additional slotsNVMe: 1 x M.2 slot
Serial ports1
Video connectors1 x D-Sub
Ethernet port4+1 (IPMI 2.0)
LAN Ports with LED (ACT / LINK LED and SPEED LED)
USB 3.0 ports4 x USB 3.0
Size & build
Form factorEEB
Width and length12.0 in × 13.0 in
Shipping weight2.22 kg
Package size386 × 363 × 71 mm
More details
PCI express x82 x PCIe 3.0 x8

Questions about this item

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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