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Green rectangular DDR4 RDIMM circuit board with gold edge contacts and black memory chips, no heat spreader

OWC

OWC 128GB DDR4 2666 PC4-21300 CL19 8Rx4 288-pin 1.2V ECC Registered RDIMM for HP Apollo PC40 SX40

SKU CH-AA22-N56QN

A 128GB DDR4-2666 ECC registered RDIMM with CL19 latency and 1.2V operation for HP Apollo PC40 and SX40 servers

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS Latency19
  • Voltage1.2V
  • ECCYes
  • 128GB single module expands server capacity
  • ECC registered design protects data integrity
  • DDR4 2666 speed matches system requirements
  • 2V operation reduces power consumption
  • JEDEC compliant ensures reliable compatibility

128GB DDR4 ECC RDIMM for HP Apollo

This 128GB DDR4 2666 registered ECC module is built for HP Apollo PC40 and SX40 servers. It delivers 128GB of error-correcting memory in a single 288-pin DIMM running at 1.2V. The part meets JEDEC and RoHS standards for warranty-safe upgrades. It targets administrators extending the life of compatible server platforms.

Suited for registered ECC servers only

This memory fits servers and workstations that require registered ECC DDR4 RDIMMs. It will not work in standard desktop computers or consumer motherboards. It also cannot be mixed with unbuffered or load-reduced ECC modules. Buyers needing non-ECC or unbuffered memory should look elsewhere.

8Rx4 rank density decides compatibility

The module uses an 8Rx4 rank configuration that the memory controller must support. CL19 latency at 2666 MT/s is fixed, with backward compatibility to 2133 and 2400 MT/s. Verify the platform accepts 8Rx4 registered DIMMs before purchase. No other specification overrides this requirement.

Puntos fuertes

  • 128GB single module expands server capacity
  • ECC registered design protects data integrity
  • DDR4 2666 speed matches system requirements
  • 2V operation reduces power consumption
  • JEDEC compliant ensures reliable compatibility

Especificaciones

BrandOWC
Part Number2R6D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS Latency19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
Heat SpreaderNo
Compatible SystemHP Apollo PC40
HP Apollo SX40

Preguntas sobre este artículo

How do I install the 288-pin ECC Registered DIMM in an HP Apollo PC40 SX40, and what step do people often miss?

Power down the server, open the chassis, and seat the module firmly in the correct DDR4 slot until the retention clips click. The step often missed is confirming the system requires registered ECC memory and that no unbuffered or load-reduced DIMMs are present, as mixing types will prevent boot.

What maintenance or replacement will this 128GB DDR4 2666 module need over its service life?

The module has no heat spreader and no moving parts, so no routine maintenance is required. Replacement is only necessary if a memory error occurs or if a capacity upgrade is desired. The JEDEC-standard 1.2V design ensures long-term stability under normal server operating conditions.

What limit appears first when this 8Rx4 CL19 RDIMM runs sustained workloads at 2666 MT/s?

The primary limit is the CL19 latency at 2666 MT/s, which fixes the minimum access delay. Under sustained load the registered buffer adds one cycle, so throughput is bounded by the 21300 MB/s peak bandwidth and the 8Rx4 organisation's rank density.

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