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Two green DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 512GB (2x256GB) DDR4 3200 ECC Registered RDIMM Memory Upgrade Kit

SKU CH-3Z2B-82868

ECC registered DDR4 kit adds 512 GB across two 256 GB modules at 3200 MT/s for Dell PowerEdge MX750c, R650 and R750 servers

Capacity 512GB (2 x 256GB)

  • 512 GB total capacity from two 256 GB modules
  • DDR4 3200 MHz speed for high-throughput server workloads
  • ECC registered design detects and corrects data errors
  • 2 V operation reduces power draw in dense configurations
  • Validated for Dell PowerEdge MX750c R650 R750 systems

Server ECC Registered Kit

This OWC upgrade kit supplies 512 GB of DDR4 memory across two 256 GB RDIMMs rated at 3200 MT/s with CL22 latency. The modules are ECC registered, 8Rx4 octal-rank, 288-pin, and operate at 1.2 V. They are validated for Dell PowerEdge MX750c, R650 and R750 servers and cross-reference Samsung M393ABG40M52-CAE, Hynix HMAT14JXSRB120N, HMAT14JXSRB122N and Supermicro MEM-DR425MI-ER32.

For Server Builders Only

The kit suits administrators expanding or refreshing memory in the listed PowerEdge platforms where registered ECC is required. It will not work in standard desktop computers, workstations that demand unbuffered DIMMs, or systems that require load-reduced ECC modules. Mixing with unbuffered or load-reduced memory is not supported.

Capacity Per Module Matters

Each DIMM provides 256 GB in an 8Rx4 organisation; the server must accept octal-rank registered modules at this density. If the platform limits rank count or maximum capacity per slot, the modules will not be recognised. Verify the system documentation for rank and capacity limits before ordering.

How it compares

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

Price $3,032.99
Pricier than about 73% of the 21,161 comparable items (median $397.99).

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Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Questions about this item

How do I install these 288-pin RDIMMs in my PowerEdge R750, and which slot-population rule do installers most often miss?

Insert each 256 GB module into the correct DDR4 slot for your CPU channel layout; the step most often missed is matching the 8Rx4 octal-rank population order required by the R750 memory-configuration guide.

What maintenance or replacement will this 512 GB kit need over its service life?

No scheduled maintenance is required; if a module fails, replace it with another 256 GB DDR4 3200 PC4-25600 CL22 8Rx4 1.2 V ECC Registered RDIMM to keep rank and timing consistency.

What is the first limit that appears when the kit runs at sustained 3200 MT/s load in a Dell PowerEdge MX750c?

The CL22 CAS latency at 3200 MT/s becomes the primary timing bottleneck before thermal or voltage limits are reached.

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