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Four black DDR4 UDIMM sticks without heat spreaders

OWC

OWC 64GB (4x16GB) DDR4 2666MHz CL19 ECC Unbuffered desktop RAM

SKU CH-GQCZ-X6897

Four 16 GB DDR4 2666 MHz CL19 ECC unbuffered DIMMs add 64 GB of error-correcting memory for workstations, servers or NAS systems

  • Capacity64GB (4 x 16GB)
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 64GB (4 x 16GB)

  • 64GB total capacity across four 16GB modules for heavy multitasking workloads
  • ECC protection detects and corrects single-bit errors to keep data intact
  • DDR4 2666MHz CL19 timing delivers responsive throughput for workstation tasks
  • 2V operation reduces power draw and heat in dense server builds
  • Backward compatible with 2133MHz and 2400MHz systems for flexible upgrades

64GB Kit for Workstation and Server Builds

This OWC kit provides 64GB total capacity across four 16GB unbuffered ECC UDIMMs. It runs at DDR4 2666MHz with a CAS latency of CL19 and operates at the standard 1.2V. The modules use a 288-pin form factor and contain no heat spreaders or lighting.

Suited for ECC Platforms Only

The error-correcting code function requires a motherboard and CPU that support ECC unbuffered memory; standard consumer desktops without that support cannot use the ECC capability. Systems needing registered or load-reduced DIMMs should select a different module type.

2666MHz Speed with Backward Compatibility

Rated at PC4-21300 2666MHz CL19, the kit will also run at 2400MHz and 2133MHz on platforms limited to those lower speeds. This flexibility helps when populating all four slots on older workstation or NAS motherboards.

Points forts

  • 64GB total capacity across four 16GB modules for heavy multitasking workloads
  • ECC protection detects and corrects single-bit errors to keep data intact
  • DDR4 2666MHz CL19 timing delivers responsive throughput for workstation tasks
  • 2V operation reduces power draw and heat in dense server builds
  • Backward compatible with 2133MHz and 2400MHz systems for flexible upgrades

Caractéristiques

BrandOWC
Part Number2E6D42R8064S
Capacity64GB (4 x 16GB)
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

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Questions sur cet article

Will the four 16GB modules need any periodic cleaning or firmware updates?

No maintenance is required; the ECC UDIMMs have no heat spreaders, no LEDs and no firmware to update, so they run until a module fails or you replace the kit.

What is the first limit reached when the kit runs at 2666MHz CL19 under continuous load?

The DDR4 JEDEC voltage ceiling of 1.2V is the first hard limit; sustained operation cannot exceed it without leaving specification.

How much heat and power does the 64GB kit produce when installed in a workstation running all day?

Four unbuffered 1.2V DDR4 modules draw modest power and generate low heat; with no heat spreaders they rely on case airflow, staying well within typical desktop thermal envelopes.

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