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Eight green circuit boards with gold edge connectors and black memory chips

OWC

OWC 1TB (8×128GB) DDR4-2933 CL21 4Rx4 LRDIMM memory upgrade for Dell PowerEdge XR4510c XR4520c

SKU CH-4MBY-ECV7J

Eight 128 GB DDR4-2933 ECC load-reduced DIMMs add 1 TB to Dell PowerEdge XR4510c and XR4520c servers

  • Capacity1TB (8 x 128GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 1TB (8 x 128GB)

  • 1 TB capacity from eight 128 GB modules expands server memory headroom
  • DDR4-2933 CL21 speed supports high-throughput workloads in Dell PowerEdge XR4510c and XR4520c
  • ECC load-reduced design maintains data integrity under sustained multi-rank operation
  • 2 V JEDEC-standard voltage reduces power draw per installed DIMM
  • Backward compatible with 2133, 2400 and 2666 MHz platforms for flexible deployment

Server memory upgrade kit

This OWC kit delivers 1TB of DDR4-2933 ECC Load Reduced memory across eight 128GB modules. It is built for Dell PowerEdge XR4510c and XR4520c servers that require 4Rx4 LRDIMMs. The kit targets administrators expanding capacity in compatible rack or edge platforms. It will not work in standard desktops or systems needing unbuffered or registered DIMMs.

288-pin LRDIMM form factor

Each module uses the 288-pin DDR4 LRDIMM interface with a 1.2V operating voltage and CL21 latency. The load-reduced design reduces electrical load on the memory bus, allowing higher density per channel in supported servers. Modules lack a heat spreader, so airflow in the chassis must be sufficient. Mixing with unbuffered or registered ECC DIMMs is not supported.

JEDEC-standard thermals and power

The memory complies with JEDEC DDR4 specifications and runs at the standard 1.2V, keeping power draw within normal limits for LRDIMM modules. Backward compatibility with 2133, 2400 and 2666MHz speeds allows the kit to clock down if the platform requires it. No additional cooling beyond standard server airflow is specified.

Pluspunten

  • 1 TB capacity from eight 128 GB modules expands server memory headroom
  • DDR4-2933 CL21 speed supports high-throughput workloads in Dell PowerEdge XR4510c and XR4520c
  • ECC load-reduced design maintains data integrity under sustained multi-rank operation
  • 2 V JEDEC-standard voltage reduces power draw per installed DIMM
  • Backward compatible with 2133, 2400 and 2666 MHz platforms for flexible deployment

Specificaties

BrandOWC
Part Number2L9D44R41TBK
Capacity1TB (8 x 128GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge XR4510c
Dell PowerEdge XR4520c

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What DDR4 standard and speed does this PC4-23400 CL21 kit run at, and what lower speeds will it fall back to?

The modules are rated for DDR4-2933 (PC4-23400) at CL21 and will automatically operate at 2133, 2400 or 2666 MHz if the server requires a lower speed.

What physical slot and form factor do these 288-pin LRDIMMs need in the PowerEdge XR4510c or XR4520c?

Each 128 GB module uses a standard 288-pin DDR4 DIMM slot; the kit fills eight slots with load-reduced ECC memory that must not be mixed with unbuffered or registered DIMMs.

How are the eight 128 GB sticks installed, and what population rule is often missed?

Install one module per slot following the server's DIMM population guide; the critical step is keeping all eight slots populated with identical 4Rx4 LRDIMMs and not mixing in any registered or unbuffered memory.

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