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Two green DDR4 RDIMM modules, 288-pin, no heat spreader

OWC

OWC 128GB (2x64GB) DDR4 2933 CL21 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-HCN8-MEA9P

ECC registered DDR4 kit delivers 128 GB across two 64 GB modules at 2933 MHz CL21 for compatible HP ProLiant Gen10 servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 128GB (2 x 64GB)

  • 128GB total capacity from two 64GB modules
  • DDR4 2933 speed with CL21 latency for responsive server workloads
  • ECC registered design protects data integrity in critical applications
  • 2V operation reduces power draw across compatible HP ProLiant systems
  • Backward compatible with 2133, 2400 and 2666MHz platforms

Server ECC memory kit

This 128GB kit contains two 64GB DDR4 2933 ECC registered DIMMs built for HP ProLiant Gen10 servers. It targets administrators who need to expand memory capacity in supported rack or carrier-grade systems without mixing memory types.

Registered ECC requirement

The modules are 2Rx4 registered ECC RDIMMs and will not work in standard desktops or alongside unbuffered or load-reduced memory. Compatibility is limited to the listed HP ProLiant DL160 Gen10, DL180 Gen10, DL380 Gen10 Carrier Grade, DX170r Gen10 and XL450 Gen10 models.

Thermals and power

Operating at 1.2V with no heat spreaders, the modules rely on server chassis airflow for cooling. Power draw scales with the 128GB total capacity and registered buffer, while acoustic output is determined by the host system fan curves rather than the memory itself.

How it compares

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

Price $696.99
Pricier than about 56% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.45 per GB
Cheaper than about 71% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D42R4128P
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP ProLiant DL160 Gen10
HP ProLiant DL180 Gen10
HP ProLiant DL380 Gen10 Carrier Grade
HP ProLiant DX170r Gen10
HP ProLiant XL450 Gen10

Other versions of this model

5 more in the same range

Questions about this item

Will 2933 MHz DDR4 run at that speed in my HP ProLiant DL380 Gen10?

The modules are rated for DDR4 2933 (PC4-23400) and are backward compatible with 2666 MHz, 2400 MHz and 2133 MHz; the server's memory controller and CPU generation determine the actual operating frequency.

Does the registered ECC RDIMM design limit which memory slots I can populate on a DL180 Gen10?

Registered ECC RDIMMs are required for these ProLiant servers and cannot be mixed with unbuffered or load-reduced DIMMs; follow the platform's population rules for 2Rx4 modules.

Will the 288-pin 2Rx4 sticks fit the DIMM slots on an HP ProLiant XL450 Gen10?

Yes — each module is a standard 288-pin DDR4 RDIMM with 2Rx4 organisation, matching the slot and rank requirements of the listed ProLiant models.

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