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Two green DDR3L ECC registered RDIMM sticks with gold contacts

OWC

OWC 32GB (2x16GB) DDR3L 1600 ECC Registered RDIMM 1.35V memory upgrade

SKU CH-3P48-SSEN2

A 32 GB DDR3L ECC registered kit of two 16 GB modules at 1600 MHz for Cisco UCS B200 M3, B22 M3, B420 M3, C22 M3 and C220 M3 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR3L 1600 (PC3L 12800)
  • CAS latencyCL11
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 32GB (2 x 16GB)

  • ECC registered design protects data integrity in servers
  • 32 GB kit (2×16 GB) expands Cisco UCS capacity
  • DDR3L 1600 CL11 matches factory speed specs
  • 35 V low-voltage operation reduces power draw
  • Validated for B200 M3, B22 M3, B420 M3, C22 M3, C220 M3

Server-grade DDR3L ECC RDIMM kit

This 32 GB kit contains two 16 GB DDR3L 1600 registered DIMMs with ECC and a CAS latency of CL11. It operates at 1.35 V and uses a 2Rx4 organisation on 240-pin modules. The memory is designed for Cisco UCS B200 M3, B22 M3, B420 M3, C22 M3 and C220 M3 servers and workstations.

Verify registered ECC support

Your system must accept DDR3L registered ECC RDIMMs; unbuffered or load-reduced modules will not work alongside this kit. Confirm the motherboard can run 1.35 V DDR3L at 1600 MT/s and that the memory controller supports 2Rx4 dual-rank modules. Check the server documentation for maximum capacity per channel and required population order before installing.

Steady throughput with ECC integrity under

Registered buffering reduces electrical load on the memory controller, helping maintain signal quality during prolonged workloads. ECC corrects single-bit errors on the fly, preventing silent data corruption in long-running database or virtualization tasks. The 1.35 V DDR3L voltage lowers power draw compared to standard DDR3, reducing thermal stress during sustained operation.

How it compares

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

Price $93.99
Cheaper than about 68% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.94 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6T32R4032P
Total capacity32 GB (2 × 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 B200 M3
Cisco UCS B22 M3
Cisco UCS B420 M3
Cisco UCS C22 M3
Cisco UCS C220 M3

Other versions of this model

5 more in the same range

Questions about this item

What comes in the box and do I need anything else to install it?

The kit includes two 16GB DDR3L 1600 ECC Registered RDIMM modules; no extra parts are required for installation in a compatible Cisco UCS server.

How do I know if this 32GB kit is the right capacity for my Cisco UCS B200 M3?

Each module is 16GB 2Rx4 DDR3L 1600 CL11 1.35V; choose this kit when your server needs 32GB total across two populated DIMM slots.

What does the PC3L-12800 1600MHz CL11 rating mean once the memory is running in my Cisco UCS C220 M3?

It indicates DDR3L 1600 MT/s transfer rate, CAS latency 11 and 1.35V operation, matching the server's supported memory specification.

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