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Eight green DDR3L LRDIMM modules in anti-static tray

OWC

OWC 256GB (8x32GB) DDR3L 1600 CL11 4Rx4 240-pin 1.35V ECC Load Reduced LRDIMM memory upgrade

SKU CH-9WSB-BFT8R

Eight 32 GB DDR3L ECC load-reduced DIMMs totalling 256 GB for Cisco UCS C24 M3, C240 M3 and C420 M3 servers

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 256GB (8 x 32GB)

  • 256 GB total capacity from eight 32 GB modules
  • DDR3L 1600 speed with CL11 latency for server workloads
  • 35 V low-voltage operation reduces power draw
  • ECC load-reduced design protects data integrity
  • Validated for Cisco UCS C24 M3, C240 M3, C420 M3

Server-grade DDR3L upgrade kit

This kit provides 256GB of DDR3L ECC Load Reduced memory across eight 32GB modules for Cisco UCS C24 M3, C240 M3 and C420 M3 servers. It runs at 1600 MT/s with CL11 latency at 1.35V. The modules are built to JEDEC specifications and intended for workstation or server platforms only.

ECC Load Reduced design changes compatibility

Load Reduced DIMMs reduce electrical load on the memory bus, allowing higher capacities per channel than standard registered DIMMs. They cannot be mixed with unbuffered or standard ECC registered modules. The 4Rx4 organisation supports dense configurations in the listed Cisco systems.

DDR3L 1600 interface limits total bandwidth

The DDR3L 1600 standard caps data rate at PC3L-12800, which bounds maximum throughput regardless of module count. Voltage is fixed at 1.35V, so power draw scales with population. Systems not validated for 240-pin DDR3L LRDIMMs will not accept these modules.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $303.99
Cheaper than about 54% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $1.19 per GB
Cheaper than about 96% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1L6T34R4256K
Total capacity256 GB (8 × 32 GB)
Product type240-Pin DDR3L ECC LRDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsCisco UCS C24 M3
Cisco UCS C240 M3
Cisco UCS C420 M3

Other versions of this model

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Questions about this item

Will the ECC LRDIMM modules need any periodic replacement or maintenance after installation?

The modules are solid-state with no moving parts and carry a limited lifetime warranty; they do not require scheduled replacement or maintenance once correctly seated.

What is the first limit reached when the 256 GB kit runs at DDR3L 1600 CL11 under continuous load?

The 1.35 V operating voltage and CL11 latency at 1600 MT/s define the electrical and timing ceiling; sustained throughput cannot exceed the PC3L-12800 data rate.

How much extra heat and noise does the 8-module 256 GB LRDIMM kit add when the server runs all day?

Each 32 GB 4Rx4 LRDIMM operates at 1.35 V without a heat spreader; the memory itself is silent, and any additional heat is managed by the Cisco UCS C24 M3, C240 M3 or C420 M3 chassis fans.

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