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Eight green DDR3L ECC registered DIMMs in static bags

OWC

OWC 64GB (8x8GB) DDR3L 1333 ECC Registered DIMM Memory Upgrade Kit

SKU CH-5DEX-7ZN7S

Eight DDR3L 1333 ECC registered DIMMs totalling 64 GB for Cisco UCS B440 M1 and C460 M2 servers

  • Capacity64GB (8 x 8GB)
  • Type240-Pin DDR3L ECC RDIMM
  • SpeedDDR3L 1333 (PC3L 10600)
  • CAS LatencyCL9
  • Voltage1.35V
  • ECCYes

Capacity 64GB (8 x 8GB)

  • ECC registered memory protects server data integrity
  • 64GB kit with eight 8GB modules maximises capacity
  • DDR3L 1333 CL9 at 1.35V reduces power draw
  • 240-pin 2Rx4 registered DIMMs fit Cisco UCS B440 M1 and C460 M2
  • Replaces Cisco part numbers N01M308GB2 UCSMR1X082RXA UCSMR2X082RXB UCSMR2X082RXC

Server memory kit

The OWC 64GB kit contains eight 8GB DDR3L 1333 ECC registered DIMMs built for Cisco UCS B440 M1 and C460 M2 servers. It targets administrators who need to maximise memory capacity in those specific platforms.

Registered ECC requirement

Each module is a 2Rx4 240-pin DDR3L DIMM running at 1.35V with CL9 latency and PC3L-10600 speed. The registered ECC design means it will not work in standard desktops or alongside unbuffered or load-reduced memory.

Low-voltage thermals

Operating at 1.35V reduces power draw compared with standard DDR3, helping keep server thermals manageable under sustained workloads. No heat spreaders are fitted, so airflow across the DIMM slots remains the primary cooling path.

Highlights

  • ECC registered memory protects server data integrity
  • 64GB kit with eight 8GB modules maximises capacity
  • DDR3L 1333 CL9 at 1.35V reduces power draw
  • 240-pin 2Rx4 registered DIMMs fit Cisco UCS B440 M1 and C460 M2
  • Replaces Cisco part numbers N01M308GB2 UCSMR1X082RXA UCSMR2X082RXB UCSMR2X082RXC

Specifications

BrandOWC
Part Number1R3T32R4064K
Capacity64GB (8 x 8GB)
Type240-Pin DDR3L ECC RDIMM
SpeedDDR3L 1333 (PC3L 10600)
CAS LatencyCL9
Voltage1.35V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B440 M1
Cisco UCS C460 M2

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Questions about this item

Will the 1333 MHz speed actually run at that rate in a Cisco UCS B440 M1?

The modules are rated for DDR3L 1333 (PC3L-10600) CL9; the server's memory controller determines the final operating frequency.

Does the 240-pin DDR3L ECC Registered interface limit total capacity or rank population on the C460 M2?

Each DIMM is a 2Rx4 registered module; maximum capacity and rank-per-channel limits are defined by the system's memory subsystem.

What physical clearance is needed for the 240-pin DIMMs in the B440 M1 chassis?

Standard-height 240-pin DDR3L DIMMs without heat spreaders fit the server's memory slots; verify slot spacing in the system service guide.

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