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Eight green DDR4 server memory modules with gold contacts and black chips

OWC

OWC 512GB (8x64GB) DDR4 3200MHz CL22 ECC Registered RDIMM 1.2V 288-pin Server RAM

SKU CH-TWKW-M6MWQ

Eight 64 GB DDR4 3200 MHz CL22 ECC registered RDIMMs at 1.2 V deliver 512 GB of server-grade memory

  • 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)

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Rank 2Rx4

  • ECC registered design protects data integrity in critical workloads
  • 512 GB total capacity across eight 64 GB modules scales memory for virtualization
  • DDR4 3200 MHz speed delivers high throughput for demanding applications
  • JEDEC and RoHS compliance ensures broad server compatibility
  • 2 V operation reduces power draw in dense configurations

Server capacity

This OWC kit supplies 512GB of DDR4 ECC registered memory across eight 64GB modules. It is built for workstations and servers that require registered DIMMs and will not operate in standard desktop computers or alongside unbuffered memory.

Registered ECC requirement

The modules are 2Rx4 DDR4 3200 CL22 registered DIMMs with ECC. Compatibility depends on the platform supporting registered ECC DDR4; systems that accept only unbuffered or non-ECC memory cannot use this kit.

Thermals and power

Each module runs at 1.2V without a heat spreader, relying on chassis airflow for cooling. The JEDEC-compliant voltage keeps power draw low for high-density server configurations.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $3,140.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 91% of the 6,064 comparable items (median 32 GB).
Price per GB $6.13 per GB
Cheaper than about 62% of the 6,064 comparable items (median $7.25 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
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

What does the 512 GB kit size mean for my server's total memory capacity?

The kit contains eight 64 GB modules giving 512 GB total; your server must support that capacity per socket and across all populated channels.

What does the DDR4 3200 PC4-25600 rating mean for real-world throughput?

The modules run at the JEDEC DDR4 3200 standard; sustained throughput depends on the platform's memory controller and channel population.

Will these 288-pin RDIMMs fit my server's DIMM slots?

They are standard 288-pin DDR4 RDIMMs; verify your server takes registered ECC DDR4 RDIMMs and has eight available slots.

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