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

OWC

OWC 256GB (4x64GB) DDR4 3200 CL22 ECC RDIMM HP ProLiant Gen10 Plus

SKU CH-732B-7CAK5

A 256GB kit of four 64GB DDR4 3200 CL22 ECC registered RDIMMs for HP ProLiant Gen10 Plus servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 256GB (4 x 64GB)

  • 256 GB total capacity from four 64 GB modules
  • DDR4 3200 speed with CL22 latency for responsive server workloads
  • ECC registered design protects data integrity in critical applications
  • 2 V operation reduces power draw in dense configurations
  • Qualified for HP ProLiant DL385, DX360 and DX385 Gen10 Plus systems

Server ECC RDIMM Kit

This OWC kit supplies 256 GB of DDR4 ECC registered memory in four 64 GB modules. It is built for HP ProLiant Gen10 Plus servers that require registered DIMMs with error correction. The modules will not work in standard desktops or with unbuffered or load-reduced memory.

DDR4 3200 CL22 Registered

Each module runs at DDR4 3200 (PC4-25600) with CL22 latency, 1.2 V operation and a 2Rx4 organisation. The registered buffer and ECC function are the single specification that decides compatibility with the target ProLiant platforms.

Four-Module Population

The 288-pin RDIMMs install directly into the server's memory slots without heat spreaders. Populating four slots at once lets the memory controller run in its optimal configuration while leaving remaining slots free for future expansion.

How it compares

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

Price $1,456.99
Pricier than about 64% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.69 per GB
Cheaper than about 68% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R4256S
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHP 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

Questions about this item

What does the 3200 MT/s rating mean once the kit is installed in a ProLiant Gen10 Plus server?

The modules run at the JEDEC-standard DDR4 3200 data rate, delivering PC4-25600 bandwidth when the memory controller is configured for that speed.

How does the DDR4 RDIMM interface limit performance in practice?

The registered design adds one clock cycle of buffering, which stabilises large-capacity loads but caps the maximum usable frequency at the rated 3200 MT/s.

What physical slot and keying does each 64 GB module require?

Each DIMM uses the standard 288-pin DDR4 RDIMM form factor and fits only server boards with matching registered DIMM slots.

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