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

OWC

OWC 512GB (8x64GB) DDR4 3200 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-8QFZ-7R7K9

Eight 64 GB registered ECC DDR4-3200 modules add 512 GB to compatible HP ProLiant servers

  • Capacity512GB (8 x 64GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 512GB (8 x 64GB)

Struck-through versions exist but are not stocked here.

  • 512GB total capacity scales virtualization density across eight 64GB modules
  • DDR4 3200 speed with CL22 latency feeds high-throughput server workloads
  • ECC registered design protects data integrity in mission-critical environments
  • 2V operation reduces power draw per 288-pin DIMM slot
  • Validated replacement for HP part numbers P43170-B21 P06035-B21 P07650-B21 P25205-B21

Server memory kit

This OWC kit delivers 512GB of DDR4 3200 ECC registered memory across eight 64GB modules. It is built for HP ProLiant DL385 Gen10 Plus, DL385 Gen10 Plus v2, DX360 Gen10 Plus and DX385 Gen10 Plus servers that require registered DIMMs with 2Rx4 organisation. The modules run at 1.2V and carry a CL22 latency rating.

Replaces HP original parts

The kit substitutes HP part numbers P43170-B21, P06035-B21, P06035-H21, P07650-B21, P07650-H21, P07650-K21 and P25205-B21. The upgrade is worthwhile when the existing configuration cannot meet current workload demands or when expanding capacity avoids a full platform replacement. It cannot be mixed with unbuffered or load-reduced ECC memory.

Build integration

Each 288-pin RDIMM fits the supported ProLiant memory slots without a heat spreader, leaving airflow paths clear. The registered design places less electrical load on the memory controller, allowing all eight modules to operate together at the rated 3200 speed. Buyers needing unbuffered memory or consumer desktop compatibility should look elsewhere.

Highlights

  • 512GB total capacity scales virtualization density across eight 64GB modules
  • DDR4 3200 speed with CL22 latency feeds high-throughput server workloads
  • ECC registered design protects data integrity in mission-critical environments
  • 2V operation reduces power draw per 288-pin DIMM slot
  • Validated replacement for HP part numbers P43170-B21 P06035-B21 P07650-B21 P25205-B21

Specifications

BrandOWC
Part Number3R2D42R4512K
Capacity512GB (8 x 64GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP ProLiant DL385 Gen10 Plus
HP ProLiant DL385 Gen10 Plus v2
HP ProLiant DX360 Gen10 Plus
HP ProLiant DX385 Gen10 Plus

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 288-pin DDR4 RDIMMs fit the memory slots in an HP ProLiant DL385 Gen10 Plus?

Yes — the kit uses 288-pin DDR4 registered DIMMs, which is the standard form factor for the DL385 Gen10 Plus and the other listed ProLiant models.

What is the correct population order for the eight 64 GB modules, and which step is most often missed?

Install all eight modules in matched sets per the server’s memory-installation guide; the step most often missed is updating the system BIOS before the first boot so the 2Rx4 ranks are recognised at 3200 MT/s.

When should the 512 GB kit be replaced or serviced?

ECC registered RDIMMs have no scheduled maintenance; replace a module only if the server’s memory diagnostics report correctable or uncorrectable errors on a specific DIMM.

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