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Four green DDR3L LRDIMM modules with gold contacts and black chips

OWC

OWC 128GB (4x32GB) DDR3L 1600 CL11 240-pin 1.35V ECC LRDIMM memory upgrade

SKU CH-Q5GR-HHWAC

128 GB DDR3L ECC Load-Reduced kit (4 × 32 GB) at 1600 MHz CL11 for Cisco UCS B260 M4 and B460 M4 servers

  • Capacity128GB (4 x 32GB)
  • Type240-Pin DDR3L ECC LRDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity from four 32 GB modules
  • DDR3L 1600 speed with CL11 latency for server workloads
  • ECC load-reduced design protects data integrity in Cisco UCS B260 M4 and B460 M4
  • Low 1.35 V operation reduces power draw per module
  • 240-pin 4Rx4 form factor matches Cisco part replacements

128GB ECC LRDIMM kit for Cisco UCS

This 128GB kit contains four 32GB DDR3L 1600 CL11 modules built to JEDEC specifications at 1.35V. It targets administrators upgrading Cisco UCS B260 M4 E7 v2, v3 or B460 M4 E7 v2, v3 blade servers that require load-reduced ECC memory.

Fits 240-pin DDR3L slots in qualified Cisco blades

Each module uses a 4Rx4 organisation and load-reduced buffering to lower electrical load on the memory bus, allowing the full 128GB capacity within the platform's supported slot count. The kit replaces Cisco part numbers UCSML1X324RYA, UCS-ML-1X324RZ-A and UCSML2X324RYE without mixing with unbuffered or registered ECC DIMMs.

No heat spreaders or software included

Modules ship without heat spreaders, relying on the server's directed airflow for cooling. The package provides only the four DIMMs; no configuration utilities or firmware tools are bundled, so deployment follows the standard Cisco UCS memory installation procedure.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • DDR3L 1600 speed with CL11 latency for server workloads
  • ECC load-reduced design protects data integrity in Cisco UCS B260 M4 and B460 M4
  • Low 1.35 V operation reduces power draw per module
  • 240-pin 4Rx4 form factor matches Cisco part replacements

Specifications

BrandOWC
Part Number1L6T34R4128S
Capacity128GB (4 x 32GB)
Type240-Pin DDR3L ECC LRDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B260 M4 E7 v2 & v3
Cisco UCS B460 M4 E7 v2 & v3

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Questions about this item

What sustained-use limit appears first with four 4Rx4 LRDIMMs at 1600 MT/s?

The memory controller must address four quad-rank modules per channel, so rank density becomes the limiting factor before bandwidth or latency.

How much heat and power do four 32 GB LRDIMMs generate when running all day?

Each module operates at 1.35 V without a heat spreader, so total power draw and thermal output scale with the 128 GB kit density inside the Cisco UCS chassis.

Which Cisco UCS server must already be installed for this kit to work?

The upgrade is validated for Cisco UCS B260 M4 E7 v2 and v3 plus B460 M4 E7 v2 and v3 blade servers.

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