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Green printed circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 128GB DDR4 2933 CL21 4Rx4 LRDIMM ECC Memory Upgrade HP Apollo 4200 6500 Gen10

SKU CH-YDF3-BX6QD

A 128GB DDR4 2933 ECC load-reduced DIMM for HP Apollo 4200 and 6500 Gen10 servers

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 128GB

  • 128GB capacity expands server memory headroom
  • DDR4 2933 speed accelerates data-intensive workloads
  • ECC load-reduced design protects data integrity under load
  • 2V operation reduces power draw per module
  • Backward compatible with 2133, 2400 and 2666MHz systems

Target Server Memory

This 128GB DDR4 LRDIMM module is built for HP Apollo 4200 Gen10 and 6500 Gen10 servers. It delivers ECC Load Reduced operation at 2933 MT/s with CL21 latency. The single 4Rx4 stick fits 288-pin slots in compatible workstation and NAS platforms. It is not suitable for standard desktop computers or unbuffered memory configurations.

Thermal Power Noise

Operating at 1.2V, the module runs without a heat spreader in typical server airflow. Load Reduced buffering lowers electrical load on the memory controller during sustained workloads. JEDEC-compliant design ensures stable thermals at rated speed. No active cooling or fan requirements are specified for this component.

Build Connectors Mounting

The 288-pin ECC LRDIMM form factor installs directly into matching DIMM slots on supported HP Apollo systems. Backward compatibility with 2133, 2400 and 2666 MT/s buses allows mixed-speed population where the platform permits. Modules cannot be mixed with unbuffered or standard registered ECC DIMMs. Replaces multiple HP part numbers including P19047 and P11040 series.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $651.99
Pricier than about 55% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.09 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L9D44R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP Apollo 4200 Gen10
HP Apollo 6500 Gen10

Other versions of this model

5 more in the same range

Questions about this item

How is the 288-pin LRDIMM installed in an HP Apollo 4200 Gen10 and what step do people get wrong?

Align the notch on the 288-pin edge connector with the slot key, press straight down until both retention clips click, and ensure the 1.2V LRDIMM is not mixed with unbuffered or registered DIMMs — that is the step most often missed.

What maintenance or replacement will the 128GB 4Rx4 module need later?

No routine maintenance is required; if a memory error appears, run the server diagnostics and replace the single 128GB module if it fails, keeping the load-reduced ECC type consistent across the channel.

What limit shows up first under sustained use on this PC4-23400 CL21 kit?

The DDR4 2933 MT/s data rate and CL21 latency set the throughput ceiling; sustained workloads will hit that bandwidth limit before the 1.2V voltage or thermal envelope becomes a constraint.

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