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Four green DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 256GB (4x64GB) DDR4 3200 CL22 ECC Registered RDIMM memory upgrade

SKU CH-WBB0-YX1ZN

256 GB kit of four 64 GB DDR4 3200 CL22 ECC registered RDIMMs for HP ProLiant DL110 Gen10 Plus Telco and DL325 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)

  • 256GB kit expands server capacity for heavy workloads
  • ECC registered design protects data integrity in critical applications
  • DDR4 3200 speed with CL22 latency matches platform specifications
  • 2V operation reduces power draw per module
  • Validated for HP ProLiant DL110 Gen10 Plus Telco and DL325 Gen10 Plus

Server memory kit

This OWC kit supplies 256 GB of DDR4 ECC Registered memory as four 64 GB RDIMMs rated at 3200 MT/s with CL22 latency and 1.2 V operation. It is built for HP ProLiant DL110 Gen10 Plus Telco and DL325 Gen10 Plus servers and replaces several HP part numbers including P43170-B21 and P06035-B21. The modules are 2Rx4 rank, 288-pin, and carry no heat spreader.

Check compatibility

Your system must accept DDR4 ECC Registered RDIMMs and cannot mix these modules with unbuffered or load-reduced DIMMs. Verify that the server has four free 288-pin slots and that the BIOS supports 64 GB per slot at 3200 MT/s. Confirm the existing memory runs at 1.2 V and matches the 2Rx4 organisation before ordering.

Suited for ProLiant upgrades

This kit suits administrators expanding memory in the named ProLiant models or replacing failed modules with a matched set. It will not work in standard desktop PCs, workstations that require unbuffered ECC, or platforms limited to lower capacities per DIMM. Buyers needing load-reduced memory or a different speed grade should look elsewhere.

How it compares

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

Price $1,446.99
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 $5.65 per GB
Cheaper than about 69% 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 DL110 Gen10 Plus Telco
HP ProLiant DL325 Gen10 Plus

Other versions of this model

5 more in the same range

Questions about this item

What comes in the box and is anything else needed to install the 256GB DDR4 3200 CL22 ECC Registered RDIMM kit?

The box contains four 64GB DDR4 3200 PC4-25600 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM modules; no extra parts are required for installation in the compatible HP ProLiant servers.

Which capacity option should I choose for the HP ProLiant DL110 Gen10 Plus Telco or DL325 Gen10 Plus?

This kit provides 256GB total across four 64GB modules and is the listed configuration for those servers; choose it when you need the full 256GB upgrade.

What does the 3200 PC4-25600 CL22 rating mean once the memory is running in the server?

The modules operate at DDR4 3200 MT/s with a peak bandwidth of PC4-25600 and CAS latency of 22 cycles, delivering registered ECC stability for the supported ProLiant platforms.

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