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Eight green DDR3L RDIMM modules in anti-static tray

OWC

OWC 128GB (8x16GB) DDR3L 1600 PC3L-12800 CL11 2Rx4 240-pin 1.35V ECC Registered RDIMM memory upgrade

SKU CH-17W2-3HJKD

128 GB DDR3L ECC registered RDIMM kit with eight 16 GB modules at 1600 MHz for Cisco UCS C24 M3, C240 M3 and C420 M3 servers

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (8 x 16GB)

  • ECC Registered design protects server data integrity
  • 128 GB kit (8 × 16 GB) maximises Cisco UCS capacity
  • DDR3L 1600 CL11 matches factory specifications
  • 35 V low-voltage reduces power draw
  • Validated for Cisco UCS C24 M3, C240 M3, C420 M3

Server-grade DDR3L ECC kit

This OWC kit provides 128 GB of DDR3L memory across eight 16 GB registered DIMMs. Each module runs at 1600 MHz with CL11 latency at 1.35 V. The 240-pin RDIMMs include ECC and 2Rx4 organisation for data integrity in multi-socket systems.

For Cisco UCS C24 M3 C240 M3 C420 M3

The modules are validated for Cisco UCS C24 M3, C240 M3 and C420 M3 servers. They will not work in standard desktop boards that require unbuffered non-ECC memory. Builders needing load-reduced DIMMs or consumer SO-DIMMs must choose a different product.

Sustained 1.35 V registered operation

Registered buffering reduces electrical load on the memory controller during continuous throughput. ECC corrects single-bit errors without halting the server. The low-voltage DDR3L design keeps power draw steady under long-running virtualisation or database workloads.

How it compares

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

Price $339.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $2.66 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T32R4128K
Total capacity128 GB (8 × 16 GB)
Product type240-Pin DDR3L ECC RDIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
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

5 more in the same range

Questions about this item

Which servers will accept these 1.35V 240-pin DDR3L RDIMMs?

The kit is validated for Cisco UCS C24 M3, C240 M3 and C420 M3 systems.

Can I mix the 2Rx4 registered modules with any existing unbuffered or load-reduced DIMMs?

No, the manufacturer states these registered DIMMs cannot be mixed with unbuffered or ECC load-reduced memory.

How do I confirm the full 128GB is recognised after installation?

Check the server BIOS or OS memory report; it should show eight 16GB modules totalling 128GB at 1600MHz CL11.

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