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Green 288-pin DDR4 RDIMM module without heat spreader

OWC

OWC 3R2D42R464GB 64GB DDR4 3200 ECC RDIMM Server Memory Upgrade

SKU CH-GRKH-A71MN

64GB DDR4 3200 ECC registered RDIMM for select Supermicro H12 server boards

  • Capacity64GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64 GB capacity extends memory headroom for heavy workloads
  • DDR4 3200 speed matches PC4-25600 platform requirements
  • Validated for five Supermicro H12 motherboard models
  • 2 V operation keeps power draw low

Server ECC Registered Memory

This 64GB DDR4 module is built for Supermicro motherboards H12DST-B, H12DSU-iN, H12SSL-C, H12SST-PS and H12SSL-i. It operates at 3200MHz with CL22 latency and 1.2V. The registered design and ECC support target workstation and server workloads where data integrity matters. It will not work in standard desktop computers.

DDR4 3200 Interface Limits

The DDR4 3200 standard caps transfer rates at PC4-25600, so this module cannot exceed that bandwidth. Registered buffering adds a clock cycle, which stabilises heavy loads but prevents mixing with unbuffered DIMMs. JEDEC compliance ensures baseline compatibility, yet the platform must support registered ECC memory for the module to function.

64GB Capacity and Headroom

A single 2Rx4 64GB DIMM provides substantial memory headroom for virtualisation, databases and large datasets. Populating multiple slots scales capacity further within the board's maximum. The module reaches its limit when the memory controller's rank-per-channel ceiling is hit or when total installed memory exceeds the motherboard's supported maximum.

Highlights

  • ECC registered design protects data integrity in servers
  • 64 GB capacity extends memory headroom for heavy workloads
  • DDR4 3200 speed matches PC4-25600 platform requirements
  • Validated for five Supermicro H12 motherboard models
  • 2 V operation keeps power draw low

Specifications

BrandOWC
Part Number3R2D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard H12DST-B
Supermicro Motherboard H12DSU-iN
Supermicro Motherboard H12SSL-C
Supermicro Motherboard H12SST-PS
Supermicro Motherboard H12SSL-i

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Questions about this item

Should I choose the 64 GB module or combine smaller capacities to reach the same total?

This part is a single 64 GB DDR4 3200 ECC RDIMM; populating each slot with one module gives the full capacity without mixing ranks or speeds.

What does the 3200 MHz rating actually deliver when the module is installed in a Supermicro H12 motherboard?

The module runs at DDR4 3200 (PC4-25600) with CL22 latency at 1.2 V, providing the rated throughput as long as the motherboard supports that speed.

How does the 288-pin DDR4 ECC RDIMM interface limit performance in these servers?

The registered 288-pin DDR4 interface caps the module at 3200 MT/s and CL22, and the ECC registration adds one cycle of buffering for signal integrity.

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