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Green rectangular DDR4 RDIMM module with black memory chips on both sides, gold edge connectors, no heat spreader

OWC

OWC 64GB DDR4 3200 ECC Registered RDIMM 288-Pin 2Rx4 1.2V server RAM

SKU CH-KSTT-4R090

64GB DDR4 3200 ECC registered RDIMM with 2Rx4 organisation and 1.2V operation for server and workstation upgrades

  • Total capacity64 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 64 GB capacity lets servers handle larger datasets
  • ECC registered design detects and corrects memory errors
  • DDR4 3200 speed delivers high data throughput
  • 2 V operation reduces power draw
  • 288-pin RDIMM form factor fits compatible server slots

Server-grade 64GB DDR4 ECC RDIMM

This 64GB DDR4 3200 module delivers ECC registered memory for workstations and servers that require data integrity. It operates at PC4-25600 speed with CL22 latency and a 1.2V supply. The 2Rx4 organisation suits high-density configurations in compatible platforms.

JEDEC-compliant 288-pin registered design

The RDIMM form factor fits standard 288-pin DDR4 server slots and follows JEDEC specifications for reliable operation. Registered buffering reduces electrical load on the memory controller, while ECC corrects single-bit errors. Mixing with unbuffered modules is not supported by the platform.

Low-voltage operation without heat spreader

At 1.2V the module runs within standard DDR4 power limits, helping keep system thermals manageable in dense chassis. No integrated heat spreader is present, so airflow across the PCB handles cooling. Typical server airflow keeps temperatures in check without added acoustic load.

How it compares

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

Price $374.99
Pricier than about 65% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $5.86 per GB
Cheaper than about 65% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R464 GB
Total capacity64 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

Questions about this item

What DDR4 standard and speed does this 64GB RDIMM use, and what bandwidth does that cap at?

It runs at DDR4 3200 (PC4-25600), so the theoretical peak bandwidth is 25600 MB/s per module.

What physical slot and pin count does this 288-pin RDIMM need to fit in a server board?

It requires a DDR4 288-pin RDIMM slot; the module is 2Rx4 registered with ECC and has no heat spreader.

How is this ECC registered RDIMM installed, and what common mistake should be avoided?

Align the notch with the DDR4 288-pin key, press firmly until the latches click, and do not mix it with unbuffered UDIMMs.

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