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Two green DDR4 RDIMM sticks with black chips and gold contacts

OWC

OWC 512GB (2x256GB) DDR4 3200 CL22 ECC Registered RDIMM Kit

SKU CH-K7X8-2CE4M

A 512 GB DDR4 ECC registered RDIMM kit for compatible Supermicro server motherboards

Capacity 512GB (2 x 256GB)

  • Massive 512GB capacity from two 256GB modules
  • DDR4 3200 speed for high-throughput server workloads
  • ECC registered design detects and corrects data errors
  • 2V operation reduces power draw in dense configurations
  • Validated for Supermicro H11SSL and H12SSL motherboards

Server memory kit

This kit provides 512GB of DDR4 ECC registered memory across two 256GB modules. It is built for Supermicro H11SSL and H12SSL server boards that require registered DIMMs. Standard desktop systems cannot use this memory type.

Registered ECC difference

Registered ECC modules add a buffer that reduces electrical load on the memory controller, allowing higher capacities per channel. The octal-rank 8Rx4 organisation lets each DIMM reach 256GB while maintaining error correction. Mixing these with unbuffered or load-reduced DIMMs is not supported.

Installation notes

Each module uses a standard 288-pin DDR4 connector and operates at 1.2V. Populate slots according to the motherboard manual to match the validated Supermicro configurations. Incorrect slot order or mixing ranks will prevent the system from posting.

Points forts

  • Massive 512GB capacity from two 256GB modules
  • DDR4 3200 speed for high-throughput server workloads
  • ECC registered design detects and corrects data errors
  • 2V operation reduces power draw in dense configurations
  • Validated for Supermicro H11SSL and H12SSL motherboards

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Questions sur cet article

Will the 8Rx4 octal-rank modules require any special handling or replacement compared to standard DIMMs?

The 8Rx4 octal-rank design means each 256GB module presents eight logical ranks to the memory controller; no extra maintenance is needed beyond normal ECC monitoring, but the motherboard must support octal-rank DIMMs to use the full 512GB kit.

What limits total capacity first when all 512GB are populated at 3200 MT/s?

The Supermicro H11SSL and H12SSL platforms cap registered ECC memory at 3200 MT/s with octal-rank DIMMs; exceeding the board's rank-per-channel limit would force a lower speed before capacity becomes the bottleneck.

How much heat and power do two 256GB 1.2V ECC RDIMMs add under continuous load?

Each module runs at 1.2V; total kit power scales with the 512GB capacity and 8Rx4 organisation, so sustained server workloads will draw proportionally more current and generate more heat than lower-density DIMMs.

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