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Eight green circuit boards with black memory chips and gold contacts, no heat spreaders

OWC

OWC 128GB (8x16GB) DDR4 2666MHz CL19 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-KTHT-R4Y69

Eight 16 GB DDR4 2666 MHz ECC registered RDIMMs totalling 128 GB at 1.2 V CL19 for servers and workstations

  • Capacity128GB (8 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 128GB (8 x 16GB)

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Rank 2Rx4

  • 128 GB total capacity across eight 16 GB modules
  • ECC registered design detects and corrects data errors
  • 2666 MHz DDR4 speed with CL19 latency
  • 2 V operation reduces power draw
  • Backward compatible with 2133 MHz and 2400 MHz systems

128GB ECC Registered Kit for Servers

This OWC kit delivers 128GB of DDR4 memory across eight 16GB registered DIMMs. It targets administrators upgrading workstations, servers or NAS systems that require ECC error correction and registered signalling. Standard desktop boards cannot use these modules, and they must not be mixed with unbuffered memory.

Thermals and Power at 1.2V

Each module operates at the standard DDR4 voltage of 1.2V and carries no heat spreader. The registered buffer and ECC logic add minimal overhead, so power draw stays within JEDEC limits for PC4-21300 parts. Passive cooling in a properly ventilated chassis is sufficient for normal server workloads.

JEDEC Compliance and Backward Speeds

The kit is validated against JEDEC specifications and RoHS directives, ensuring a warranty-safe upgrade. Modules automatically clock down to 2133MHz or 2400MHz when installed in platforms that do not support the full 2666MHz data rate, preserving stability without manual configuration.

Points forts

  • 128 GB total capacity across eight 16 GB modules
  • ECC registered design detects and corrects data errors
  • 2666 MHz DDR4 speed with CL19 latency
  • 2 V operation reduces power draw
  • Backward compatible with 2133 MHz and 2400 MHz systems

Caractéristiques

BrandOWC
Part Number2R6D42R4128K
Capacity128GB (8 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Autres versions de ce modèle

5 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

How do I install the 8x16GB DDR4 2666MHz CL19 ECC Registered RDIMM kit in my server?

Power down the server, open the chassis, align each 288-pin module with the slot key, press firmly until the retention clips lock, and populate all eight slots following the motherboard's channel order; the step often missed is verifying the BIOS recognises all 128GB at 2666MHz after the first boot.

What maintenance or replacement will the 128GB DDR4 ECC RDIMM kit need later?

No scheduled maintenance is required; keep air pathways clear so the modules stay within the 1.2V operating envelope, and replace any stick only if the system logs uncorrectable ECC errors that persist after re-seating.

What limit appears first when the 8x16GB DDR4 2666MHz kit runs sustained heavy workloads?

The registered buffer and CL19 latency set the effective throughput ceiling at the JEDEC PC4-21300 rate; sustained traffic that saturates this bandwidth will queue at the memory controller before thermal or voltage limits are reached.

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