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Two green 288-pin DDR4 LRDIMM modules with black chips, no heat spreader

OWC

OWC 128GB (2x64GB) DDR4 2400 PC4-19200 CL17 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

SKU CH-84W6-PQDY8

Two 64 GB DDR4 2400 ECC load-reduced DIMMs for Cisco UCS B420 M4 and C460 M4 servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • 128 GB total capacity with two 64 GB modules
  • ECC load-reduced design protects data integrity in servers
  • DDR4 2400 CL17 at 1.2 V for efficient performance
  • 288-pin LRDIMM form factor fits Cisco UCS B420 M4 and C460 M4
  • Backward compatible with 2133 MHz systems for flexible deployment

Server-specific memory kit

This OWC kit supplies 128GB of DDR4 ECC Load Reduced memory as two 64GB modules rated at 2400MHz CL17. It is built for Cisco UCS B420 M4 and C460 M4 systems that require 288-pin LRDIMMs at 1.2V.

Load-reduced ECC advantage

The Load Reduced design lowers electrical load on the memory bus so dense 4Rx4 modules can operate without signal degradation. ECC corrects single-bit errors to protect data integrity in server and workstation workloads.

Installation and compatibility notes

Modules install in standard 288-pin DDR4 slots but must not be mixed with unbuffered or registered ECC DIMMs. The kit is not compatible with desktop or consumer motherboards.

Points forts

  • 128 GB total capacity with two 64 GB modules
  • ECC load-reduced design protects data integrity in servers
  • DDR4 2400 CL17 at 1.2 V for efficient performance
  • 288-pin LRDIMM form factor fits Cisco UCS B420 M4 and C460 M4
  • Backward compatible with 2133 MHz systems for flexible deployment

Caractéristiques

BrandOWC
Part Number2L4D44R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B420 M4
Cisco UCS C460 M4 (DDR4)

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Questions sur cet article

Will the 4Rx4 ECC LRDIMM modules need any firmware updates or reconfiguration after installation?

The modules are JEDEC-compliant DDR4 LRDIMMs at 1.2V and 2400MHz CL17. They install directly into Cisco UCS B420 M4 or C460 M4 (DDR4) slots without additional firmware steps.

What limits sustained throughput first — the CL17 latency or the 2400MHz bus speed?

The DDR4 2400 PC4-19200 bus sets the peak bandwidth ceiling; CL17 latency determines response time within that bandwidth envelope.

How much heat do the 2x64GB load-reduced DIMMs generate when the server runs 24/7?

Each 64GB LRDIMM operates at 1.2V without a heat spreader, relying on the server's forced airflow for cooling during continuous operation.

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