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Four green 240-pin DDR3L ECC registered DIMMs in static bags

OWC

OWC 128GB (4x32GB) DDR3L 1066 PC3L-8500 CL7 4Rx4 240-pin 1.35V ECC Registered DIMM server RAM

SKU CH-GBHZ-NBF92

A 128GB quad-channel DDR3L 1066 ECC registered server memory kit of four 32GB modules at 1.35V

  • Capacity128GB (4 x 32GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1066 (PC3L 8500)
  • CAS LatencyCL7
  • Voltage1.35V
  • ECCYes

Capacity 128GB (4 x 32GB)

Rank 4Rx4

  • 128GB total capacity from four 32GB modules
  • DDR3L 1066 speed with CL7 latency for responsive server workloads
  • ECC registered design detects and corrects data errors automatically
  • Low 1.35V operation reduces power draw in dense configurations
  • 240-pin JEDEC-standard RDIMM fits compatible workstation and server slots

Server-grade ECC registered kit

This 128GB kit contains four 32GB DDR3L modules rated at 1066MHz PC3L-8500 with CL7 latency. Each 240-pin DIMM operates at 1.35V and uses 4Rx4 registered ECC technology. The memory is designed for compatible workstations, servers, NAS systems and routers that require registered error-correcting modules.

Thermals and power profile

The modules run at the low 1.35V DDR3L voltage, reducing power draw compared to standard 1.5V DDR3. No heat spreaders are fitted, so airflow across the bare PCB handles cooling. Registered buffering adds minimal latency while maintaining signal integrity across all four slots in typical server workloads.

Registered ECC requirement

This kit only works in systems that support DDR3L registered ECC DIMMs; it will not function in standard desktop computers or alongside unbuffered memory. Buyers needing non-ECC or unregistered modules for consumer platforms must choose a different product.

Highlights

  • 128GB total capacity from four 32GB modules
  • DDR3L 1066 speed with CL7 latency for responsive server workloads
  • ECC registered design detects and corrects data errors automatically
  • Low 1.35V operation reduces power draw in dense configurations
  • 240-pin JEDEC-standard RDIMM fits compatible workstation and server slots

Specifications

BrandOWC
Part Number8R5T34R4128S
Capacity128GB (4 x 32GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1066 (PC3L 8500)
CAS LatencyCL7
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the 4Rx4 DDR3L ECC RDIMMs in a dual-channel server and which slot order do people get wrong?

Populate identical modules in matched channel pairs — typically slots 1 and 3 for channel A, 2 and 4 for channel B — and never mix the 4Rx4 registered DIMMs with unbuffered memory.

What maintenance or replacement will the 1.35 V DDR3L 1066 kit need over its service life?

No routine maintenance is required; keep air paths clean and replace only if a module fails ECC scrubbing or the platform is upgraded beyond DDR3L.

Which limit appears first when the 128 GB 4Rx4 kit runs sustained workloads at 1066 MT/s?

Memory bandwidth at PC3L-8500 saturates before the 1.35 V thermal envelope becomes a constraint.

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