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Eight green DDR3L RDIMM modules in anti-static packaging

OWC

OWC 256GB (8x32GB) DDR3L 1600 PC3L-12800 CL11 4Rx4 240-pin 1.35V ECC Registered RDIMM Server Memory Kit

SKU CH-32XZ-1YK6R

Eight 32 GB DDR3L 1600 ECC registered RDIMMs deliver 256 GB of server-grade memory at 1.35 V

  • Capacity256GB (8 x 32GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 256GB (8 x 32GB)

Rank 4Rx4

  • 256 GB total capacity from eight 32 GB modules
  • DDR3L 1600 speed with CL11 latency for responsive server workloads
  • 35 V low-voltage DDR3L reduces power draw and heat
  • ECC registered 4Rx4 design protects data integrity in critical systems
  • 240-pin RDIMM form factor fits compatible workstation and server slots

256GB DDR3L ECC RDIMM kit

This OWC kit supplies 256GB of DDR3L ECC registered memory in eight 32GB modules. It is built for workstations, servers, NAS systems and routers that require 240-pin DDR3L RDIMMs with error correction and registered signalling. The modules run at 1.35V and conform to JEDEC PC3L-12800 specifications.

Replacing unbuffered or lower-capacity DDR3L

The upgrade replaces unbuffered DDR3L DIMMs or smaller registered kits in compatible platforms. The jump is worth it when the system board supports 4Rx4 registered modules and the workload needs the full 256GB capacity for virtualisation, large datasets or multi-tenant services. It will not work in standard desktop computers or in boards that only accept unbuffered memory.

Installing eight 240-pin RDIMMs

Installation follows the usual DIMM seating procedure for 240-pin slots, but all eight modules must be populated in matched pairs to maintain dual-channel operation. The most common issue is mixing these registered DIMMs with unbuffered memory, which prevents the system from posting. Verify the platform’s qualified vendor list for 4Rx4 support before fitting the kit.

Highlights

  • 256 GB total capacity from eight 32 GB modules
  • DDR3L 1600 speed with CL11 latency for responsive server workloads
  • 35 V low-voltage DDR3L reduces power draw and heat
  • ECC registered 4Rx4 design protects data integrity in critical systems
  • 240-pin RDIMM form factor fits compatible workstation and server slots

Specifications

BrandOWC
Part Number1R6T34R4256K
Capacity256GB (8 x 32GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

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Questions about this item

Will the 240-pin DDR3L RDIMM modules fit my server's DIMM slots?

Yes, each module uses the standard 240-pin DDR3L RDIMM form factor, keyed for registered ECC slots in compatible workstations, servers and NAS systems.

What is the correct installation order for the eight 32 GB modules in a dual-channel kit?

Populate matching channel pairs first — typically slots 1 and 3, then 2 and 4 per CPU — so each channel receives identical 4Rx4 modules; the common mistake is filling one channel completely before the other.

When should I expect to replace these 1.35 V ECC registered DIMMs?

They are rated for continuous server duty with a limited lifetime warranty; replace only if ECC logs report uncorrectable errors or a module fails memtest after years of operation.

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