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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 64GB DDR4 2933 CL21 ECC RDIMM HP SimpliVity 325 Gen10

SKU CH-JHK0-GNPYG

64 GB DDR4 ECC registered DIMM running at 2933 MHz CL21 for HP SimpliVity 325 Gen10 servers

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC registered design prevents data errors in critical workloads
  • 64GB single module expands HP SimpliVity 325 Gen10 memory capacity
  • DDR4 2933 PC4-23400 CL21 speed matches server specifications
  • 2V low-voltage operation reduces power draw per module
  • Backward compatible with 2133MHz 2400MHz 2666MHz systems for flexible deployment

Server-specific memory upgrade

This OWC module is a single 64GB DDR4 2933 ECC Registered RDIMM built for the HP SimpliVity 325 Gen10. It uses a 288-pin form factor and 2Rx4 organisation to deliver 64GB of capacity in one slot. The part is not compatible with standard desktop computers or with unbuffered and load-reduced memory types.

Low-voltage registered operation

The module runs at 1.2V and carries the PC4-23400 speed rating with CL21 latency. Registered buffering adds a clock cycle for signal integrity in multi-DIMM server configurations. No heat spreader is fitted, so airflow across the DIMM sockets handles thermal dissipation.

ECC Registered DDR4 constraint

This memory only works in systems that require ECC Registered DDR4 RDIMMs; it will not function in desktop boards, laptops or NAS units that expect unbuffered or load-reduced modules. Buyers who need non-ECC or consumer memory should select a different product.

How it compares

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

Price $391.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.12 per GB
Cheaper than about 64% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2R9D42R464 GB
Total capacity64 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 SimpliVity 325 Gen10

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin RDIMM in the HP SimpliVity 325 Gen10, and what step is often missed?

Power down the server, open the chassis, align the module notch with the slot key, press firmly until both clips lock, then verify in BIOS that the 64GB module registers at 2933MHz; the step often missed is confirming the speed and ECC status in firmware before closing the case.

What maintenance or replacement will this 64GB DDR4 ECC RDIMM need over its service life?

No scheduled maintenance is required; the module has no heat spreader and relies on chassis airflow, so keep server fans and filters clean, and replace the DIMM only if memory diagnostics report correctable or uncorrectable ECC errors.

What limit appears first when this 1.2V 2Rx4 module runs sustained workloads in the SimpliVity 325 Gen10?

The memory controller caps operation at 2933MHz CL21; sustained heavy loads will hit the bandwidth ceiling of the PC4-23400 rating before thermal throttling becomes a factor on this registered DIMM.

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