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Eight green DDR4 LRDIMM modules with gold contacts, no heat spreaders

OWC

OWC 1TB (8x128GB) DDR4 2933 CL21 4Rx4 ECC LRDIMM Kit for HP ProLiant DL560 DL580 DX360 DX380 DX560 Gen10

SKU CH-D94B-CYQNX

A 1 TB DDR4-2933 ECC load-reduced kit of eight 128 GB modules for HP ProLiant Gen10 servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

  • 1 TB capacity with eight 128 GB modules for high-density server workloads
  • DDR4 2933 MHz CL21 ECC load-reduced design ensures data integrity under heavy loads
  • 2 V operation reduces power draw in HP ProLiant Gen10 systems
  • Backward compatible with 2133, 2400 and 2666 MHz platforms for flexible deployment
  • Replaces HP part numbers P19047 and P11040 series for direct OEM upgrade

Server memory kit for HP ProLiant Gen10

This kit supplies 1TB of DDR4 ECC Load Reduced memory across eight 128GB modules. It is built for HP ProLiant DL560 Gen10, DL580 Gen10, DX360 Gen10, DX380 Gen10 and DX560 Gen10 servers that require registered LRDIMM technology. Standard desktop systems cannot use these modules.

Eight matched modules simplify large-capacity

The kit delivers eight identical 288-pin LRDIMMs rated at 2933 MT/s with CL21 latency at 1.2V. Installing the full set populates multiple channels at once, letting the memory controller run at its rated speed without mixing ranks or speeds. Each module carries ECC load-reduced buffering for signal integrity in dense configurations.

Verify your server model and memory population rules

This memory fits only the listed HP ProLiant Gen10 platforms and replaces specific HP part numbers including P19047 and P11040 series. It will not work with unbuffered or standard registered ECC DIMMs, so all slots in a channel must use the same LRDIMM type. Check your server’s service guide for supported DIMM-per-channel limits and required firmware revisions before ordering.

How it compares

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

Price $5,626.99
Pricier than about 81% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $5.63 per GB
Cheaper than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L9D44R41TBK
Total capacity1 TB (8 × 128 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 ProLiant DL560 Gen10
HP ProLiant DL580 Gen10
HP ProLiant DX360 Gen10
HP ProLiant DX380 Gen10
HP ProLiant DX560 Gen10

Other versions of this model

5 more in the same range

Questions about this item

Will the 1.2V DDR4 LRDIMMs need active cooling or replacement after extended server use?

These modules have no heat spreader and run at the standard 1.2V JEDEC voltage; in a properly cooled ProLiant chassis they operate within spec for the system lifetime.

At sustained load does the CL21 latency or the 2933 MT/s data rate become the bottleneck first?

The rated speed is 2933 MT/s (PC4-23400) with CL21 timing; the memory controller in the supported Gen10 platforms sets the ceiling, so neither parameter exceeds the other in normal operation.

How much power and heat do the eight 128 GB 4Rx4 LRDIMMs add when the server runs all day?

Each module draws 1.2V at the JEDEC DDR4 LRDIMM current level; total kit power scales with all eight ranks active, and the ProLiant airflow design handles the resulting heat.

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