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Four black DDR4 UDIMM modules, no heat spreaders, 288 pins each

OWC

OWC 32GB (4x8GB) DDR4 2666 CL19 ECC Unbuffered UDIMM desktop RAM

SKU CH-35C1-V23JK

32 GB kit of four 8 GB DDR4 2666 CL19 ECC unbuffered UDIMMs for workstations, servers and NAS systems

  • Capacity32GB (4 x 8GB)
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 32GB (4 x 8GB)

  • ECC protection guards data integrity in critical workloads
  • 32 GB total capacity across four 8 GB modules
  • DDR4 2666 speed with CL19 timing for responsive performance
  • 2 V low-voltage operation reduces system power draw
  • Backward compatible with 2133 and 2400 MHz platforms

32GB ECC UDIMM kit for workstations and servers

This kit provides 32GB of DDR4 2666 CL19 memory in four 8GB unbuffered modules. It targets desktop workstations, servers and NAS systems that require error-correcting code for data integrity. The modules operate at 1.2V and conform to JEDEC PC4-21300 specifications.

Capacity and headroom at 2666MHz CL19

Four ranks of 8GB give 32GB total, enough for multi-VM hosts, large ZFS pools or heavy compile jobs. The DDR4 2666 CL19 rating sets the performance ceiling; workloads that exceed this bandwidth or latency will see diminishing returns. Backward compatibility with 2133MHz and 2400MHz platforms is supported.

Unbuffered 288-pin build with no heat spreader

Black PCBs carry 288-pin ECC unbuffered DIMMs without a heat spreader, keeping height low for dense server chassis. The bare-module design eases installation in tight DIMM slots and avoids clearance issues with large CPU coolers. RoHS compliance and JEDEC adherence ensure a warranty-safe upgrade path.

Highlights

  • ECC protection guards data integrity in critical workloads
  • 32 GB total capacity across four 8 GB modules
  • DDR4 2666 speed with CL19 timing for responsive performance
  • 2 V low-voltage operation reduces system power draw
  • Backward compatible with 2133 and 2400 MHz platforms

Specifications

BrandOWC
Part Number2E6D41R8032S
Capacity32GB (4 x 8GB)
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

Other versions of this model

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Questions about this item

Will the 2666MHz modules run with my existing 2133MHz DDR4 sticks?

Yes, the kit is backward compatible with 2133MHz and 2400MHz DDR4, so the new 2666MHz DIMMs will downclock to match the slower modules.

How can I verify the ECC function is active after installing the 4x8GB kit?

Check the BIOS memory information screen for ECC status or run a memory test tool that reports ECC correction events; the modules are unbuffered ECC and will show as such when supported by the platform.

Does the 32GB package include a heat spreader or any extra cables?

The four black 288-pin UDIMMs ship without a heat spreader, LED lighting or additional cables; only the memory modules are in the box.

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