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Eight green DDR4 RDIMM sticks, black chips, no heat spreaders

OWC

OWC 512GB (8x64GB) DDR4 3200 ECC Registered RDIMM memory upgrade

SKU CH-EER2-JBM10

Eight 64 GB DDR4 3200 ECC registered RDIMMs totalling 512 GB for Supermicro H12SSL and H12SSW motherboards

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 512GB (8 x 64GB)

  • ECC registered design protects data integrity in servers
  • 512 GB kit (8 × 64 GB) maximises Supermicro H12SSL capacity
  • DDR4 3200 CL22 at 1.2 V balances speed and power
  • 2Rx4 288-pin RDIMM modules match Supermicro MEM-DR464 part numbers
  • JEDEC compliant, RoHS compliant, tested in-house for reliability

512GB ECC RDIMM kit for Supermicro H12SSL and H12SSW

This 512GB kit contains eight 64GB DDR4 3200 registered ECC modules built for Supermicro H12SSL-CT, H12SSL-NT, H12SSW-iNR and H12SSW-NTR motherboards. It is designed for workstation and server platforms that require registered memory and will not operate in standard desktop computers.

Registered ECC modules with CL22 timing

Each 288-pin DIMM runs at 1.2V with CL22 latency and a 2Rx4 organisation. The registered buffer and on-die ECC provide the data-integrity and signal-stability that multi-socket server boards demand. Mixing these modules with unbuffered or load-reduced memory is not supported.

Eight-module capacity for high-density workloads

The 512GB total gives headroom for large virtual-machine fleets, in-memory databases and heavy rendering jobs on the listed Supermicro platforms. Systems limited to fewer than eight DIMM slots or lower maximum memory per slot cannot use the full kit.

How it compares

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

Price $2,991.99
Pricier than about 73% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.84 per GB
Cheaper than about 67% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R4512K
Total capacity512 GB (8 × 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 systemsSupermicro Motherboard H12SSL-CT
Supermicro Motherboard H12SSL-NT
Supermicro Motherboard H12SSW-iNR
Supermicro Motherboard H12SSW-NTR

Other versions of this model

5 more in the same range

Questions about this item

Will the 64 GB 2Rx4 RDIMMs need any replacement or firmware updates during their service life?

The modules carry a limited lifetime warranty with free tech support and advanced replacement, so any defective DIMM is swapped without extra cost.

What limit appears first when all eight 3200 MT/s DIMMs run sustained workloads?

The memory controller on the Supermicro H12SSL board caps total bandwidth at the rated 3200 MT/s, so throughput hits that ceiling before thermals or voltage do.

How much extra power and heat do the eight 1.2 V registered DIMMs contribute under continuous load?

Each 64 GB RDIMM operates at 1.2 V; combined draw is proportional to the 512 GB capacity, and with no heat spreaders the modules rely on chassis airflow for cooling.

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