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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 for HP Apollo 4200 Gen10 Plus

SKU CH-MYA9-J8A24

A 256GB kit of four 64GB DDR4 3200 ECC registered RDIMMs validated for the HP Apollo 4200 Gen10 Plus server

  • 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 capacity across four 64 GB modules
  • DDR4 3200 speed with CL22 latency
  • ECC registered design protects data integrity
  • 2 V operation reduces power draw
  • Validated for HP Apollo 4200 Gen10 Plus

Server memory kit for HP Apollo 4200 Gen10 Plus

This 256GB kit contains four 64GB DDR4 3200 registered DIMMs built for the HP Apollo 4200 Gen10 Plus server. Each module runs at 1.2V with CL22 latency and 2Rx4 organisation. The kit replaces HP part numbers P43170-B21, P06035-B21, P06035-H21, P07650-B21, P07650-H21, P07650-K21 and P25205-B21.

ECC registered DDR4 constraints

These modules use registered ECC DDR4 technology required by server platforms. They will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced memory. JEDEC compliance and 288-pin DDR4 form factor define the electrical and mechanical limits of this upgrade.

256GB capacity in four 64GB modules

The decisive specification is the total 256GB capacity delivered as four matched 64GB RDIMMs. Buyers needing a different total capacity or a different module count must select another kit.

How it compares

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

Price $1,455.99
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 Apollo 4200 Gen10 Plus

Other versions of this model

5 more in the same range

Questions about this item

Should I buy this 256GB kit as four 64GB modules or look for a different capacity?

The kit ships as four 64GB modules for a total of 256GB. If your HP Apollo 4200 Gen10 Plus has enough free DIMM slots and supports 64GB per slot, this configuration will work; otherwise choose a kit that matches your slot count and per-slot limit.

What does the DDR4 3200 CL22 rating actually deliver inside the Apollo 4200 Gen10 Plus?

The modules run at 3200 MT/s with a CAS latency of 22 cycles at 1.2V. The server’s memory controller will set the final speed and timings, so real-world throughput depends on the platform’s supported memory modes and population rules.

How does the 288-pin ECC Registered RDIMM interface limit what I can install?

These are 288-pin DDR4 ECC Registered DIMMs (2Rx4). They only fit servers that accept registered ECC RDIMMs; they cannot be mixed with unbuffered or load-reduced modules and will not work in standard desktop boards.

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