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Eight green 240-pin DDR3L RDIMM modules in a row

OWC

OWC 256GB (8x32GB) DDR3L 1333 PC3L-10600 CL9 4Rx4 240-pin 1.35V ECC Registered RDIMM Server Memory Kit

SKU CH-Y60Q-3DRRN

Eight 32 GB DDR3L 1333 ECC registered RDIMMs deliver 256 GB at 1.35 V for servers and workstations

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR3L 1333 (PC3L 10600)
  • CAS latencyCL9
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 256GB (8 x 32GB)

Rank 4Rx4

  • 256 GB total capacity from eight 32 GB modules
  • DDR3L 1333 MHz speed with CL9 latency for responsive server workloads
  • ECC registered design detects and corrects data errors in critical systems
  • Low 1.35 V operation reduces power draw and heat in dense configurations
  • JEDEC and RoHS compliant for warranty-safe upgrades across workstations, servers, NAS and routers

Capacity and Compatibility

This kit provides 256GB of DDR3L ECC Registered memory across eight 32GB modules. It is built for workstations, servers, NAS systems and routers that require 240-pin RDIMMs. It will not work in standard desktop computers and cannot be mixed with unbuffered memory.

Sustained Operation

The modules run at 1.35V with a CL9 latency at 1333MHz, conforming to JEDEC PC3L-10600 specifications. ECC and registered buffering maintain data integrity during continuous workloads. The dual-channel kit configuration supports stable throughput in qualified multi-socket platforms.

Installation Notes

Each DIMM uses the standard 240-pin DDR3L form factor without a heat spreader. Verify that the target system explicitly supports 4Rx4 Registered ECC modules before purchase. Incorrect platform selection is the most common reason these modules fail to post.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $658.99
Pricier than about 74% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $2.57 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number1R3T34R4256K
Total capacity256 GB (8 × 32 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1333 (PC3L 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.35 V

Other versions of this model

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Questions about this item

How much power does each 32GB DDR3L 1333 module draw at 1.35V during sustained server workloads?

Each module operates at 1.35V, lower than standard DDR3, reducing heat and power draw in 24/7 server or workstation deployments.

What motherboard features are required to run this 256GB 8x32GB ECC registered kit?

A workstation or server board with 240-pin DDR3L slots, registered ECC support, and 4Rx4 rank handling is required; desktop boards will not work.

Can I add these 4Rx4 registered DIMMs alongside older unbuffered DDR3L sticks in the same system?

No — registered ECC modules cannot be mixed with unbuffered memory; all slots must use matching registered ECC DIMMs for stability.

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