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Four green DDR3L ECC registered DIMMs 240-pin 1.35V

OWC

OWC 32GB (4x8GB) DDR3L 1600 ECC Registered RDIMM memory upgrade

SKU CH-0ZRF-33QAX

32GB DDR3L 1600 ECC Registered RDIMM kit for Cisco UCS B250 M2 and C250 M2 servers

  • Capacity32GB (4 x 8GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1600 (PC3L 12800)
  • CAS LatencyCL11
  • Voltage1.35V
  • ECCYes

Capacity 32GB (4 x 8GB)

  • ECC registered design prevents data errors in servers
  • 32 GB kit with four 8 GB modules expands capacity
  • DDR3L 1600 speed at 1.35 V reduces power draw
  • 240-pin RDIMM form factor fits Cisco UCS B250 M2 and C250 M2
  • CL11 latency and 2Rx4 rank optimise registered memory throughput

Server memory upgrade

This 32GB kit delivers four 8GB DDR3L ECC Registered RDIMM modules built for Cisco UCS B250 M2 and C250 M2 servers. Each stick runs at 1600MHz with CL11 latency at 1.35V. The registered design and 2Rx4 organisation provide error correction and signal integrity required by workstation and server platforms. It replaces Cisco part numbers UCSMR1X082RYA, UCSMR2X082RYB and UCSMR2X082RYE.

Thermals and power

Operating at the standard DDR3L voltage of 1.35V reduces power draw compared with 1.5V DDR3 modules. The JEDEC-compliant design runs within normal server airflow without a heat spreader. Registered buffering lowers electrical load on the memory controller, helping keep system thermals stable during sustained workloads. No additional cooling is required beyond standard chassis ventilation.

Build and connectors

The 240-pin DIMM form factor matches the DDR3L slots in the supported Cisco UCS models. Modules are unbuffered-ECC and load-reduced incompatible, so they must not be mixed with those types. The kit is validated for workstation, server, NAS and router platforms that accept DDR3L ECC Registered memory. Buyers needing unbuffered ECC or consumer desktop memory should choose a different product.

Highlights

  • ECC registered design prevents data errors in servers
  • 32 GB kit with four 8 GB modules expands capacity
  • DDR3L 1600 speed at 1.35 V reduces power draw
  • 240-pin RDIMM form factor fits Cisco UCS B250 M2 and C250 M2
  • CL11 latency and 2Rx4 rank optimise registered memory throughput

Specifications

BrandOWC
Part Number1R6T32R4032S
Capacity32GB (4 x 8GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1600 (PC3L 12800)
CAS LatencyCL11
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B250 M2
Cisco UCS C250 M2

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Questions about this item

How do I install the 240-pin DDR3L RDIMMs in a Cisco UCS B250 M2, and what step is often missed?

Power down the server, open the chassis, align each module's notch with the slot key, press firmly until both latches click, then verify in BIOS that all 32GB are recognised at 1600 MHz; the step often missed is confirming the registered ECC modules are seated in the correct channel order for the B250 M2 memory population rules.

What maintenance or replacement will the 1.35 V DDR3L ECC registered kit need over its service life?

No routine maintenance is required; the modules have no heat spreaders, so keep server airflow clean, and replace only if a module fails ECC correction — OWC's limited lifetime warranty covers defective units.

What limit appears first when the 4×8 GB RDIMM set runs sustained workloads on a Cisco UCS C250 M2?

The memory controller's maximum supported capacity and speed for the C250 M2 platform will be reached before the modules themselves throttle, since they operate at their rated 1600 MHz CL11 within JEDEC 1.35 V specifications.

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