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

OWC

OWC 16GB DDR5 4800 PC5-38400 CL40 ECC RDIMM 1Rx8 1.1V 288-pin memory upgrade

SKU CH-MCQT-GE51Q

A 16 GB DDR5 4800 ECC registered DIMM for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers

  • Capacity16GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 16GB

  • 16 GB DDR5 4800 CL40 adds capacity to supported servers
  • ECC registered design corrects single-bit errors for data integrity
  • 1 V operation reduces power draw versus higher-voltage modules
  • 1Rx8 single-rank layout simplifies population on HP ProLiant DL320 Gen11, DL380a Gen11, DX320 Gen11
  • Replaces HP part numbers P43322-B21, P50309-B21, P58354-H21, P62601-B21 for direct upgrade

OWC 16GB DDR5 4800 ECC RDIMM

This OWC module is a 16GB DDR5 4800 PC5-38400 CL40 ECC Registered DIMM built for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11 servers. It runs at 1.1V with a 1Rx8 layout on a 288-pin form factor and includes no heat spreader.

Suited for HP ProLiant Gen11 upgrades

IT teams maintaining the listed HP ProLiant Gen11 models can install this single 16GB stick to replace HP part numbers P43322-B21, P50309-B21, P58354-H21 or P62601-B21. Buyers who need unbuffered memory or load-reduced DIMMs for other platforms cannot use this registered ECC module.

Registered ECC decides compatibility

The registered ECC design is the single specification that determines whether this DIMM fits the target system; it will not work in standard desktops or in boards that require unbuffered or load-reduced memory.

Highlights

  • 16 GB DDR5 4800 CL40 adds capacity to supported servers
  • ECC registered design corrects single-bit errors for data integrity
  • 1 V operation reduces power draw versus higher-voltage modules
  • 1Rx8 single-rank layout simplifies population on HP ProLiant DL320 Gen11, DL380a Gen11, DX320 Gen11
  • Replaces HP part numbers P43322-B21, P50309-B21, P58354-H21, P62601-B21 for direct upgrade

Specifications

BrandOWC
Part Number4R8D51R816GB
Capacity16GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
Heat SpreaderNo
Compatible SystemHP ProLiant DL320 Gen11
HP ProLiant DL380a Gen11
HP ProLiant DX320 Gen11

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

How much power does the 1.1V DDR5 4800 RDIMM draw under continuous server load?

The module runs at 1.1V with JEDEC-standard DDR5 power management; exact wattage depends on the HP ProLiant DL320 Gen11, DL380a Gen11 or DX320 Gen11 platform and workload.

Which HP ProLiant Gen11 servers must I already own for this 16GB 1Rx8 ECC registered DIMM to work?

It is validated for HP ProLiant DL320 Gen11, DL380a Gen11 and DX320 Gen11; it will not function in standard desktops or other server models.

Can I mix this CL40 registered ECC module with older unbuffered or load-reduced DIMMs in the same Gen11 chassis?

No — the manufacturer states it cannot be mixed with unbuffered or ECC load-reduced memory; all slots must use registered ECC RDIMMs.

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