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Green printed circuit board with black memory chips in a 288-pin DIMM form factor

OWC

OWC 64GB DDR4 3200 PC4-25600 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM

SKU CH-A983-PTWWM

Single 64 GB DDR4 3200 ECC registered RDIMM for Gigabyte R162 and R181 servers

  • Capacity64GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS Latency22
  • Voltage1.2V
  • ECCYes

Capacity 64GB

Struck-through versions exist but are not stocked here.

  • 64GB capacity expands server memory headroom for virtualisation
  • ECC registered design corrects single-bit errors to protect data integrity
  • DDR4 3200 CL22 at 1.2V delivers JEDEC-standard throughput
  • Single 2Rx4 288-pin module simplifies slot population
  • Backward compatible with 2133 2400 2666 2933MHz systems

Server-grade DDR4 ECC RDIMM

This OWC module delivers 64 GB of DDR4 3200 memory with ECC and registered buffering. It is built for workstations, servers and NAS systems that require error correction and signal stability. The single 288-pin DIMM operates at 1.2 V with a CL22 latency and a 2Rx4 rank structure.

Replaces slower DDR4 ECC modules

The upgrade is worthwhile when a Gigabyte R162 or R181 system currently runs at 2133, 2400, 2666 or 2933 MHz and needs the full 3200 MT/s data rate. It also applies when a registered DIMM slot is populated with a lower-capacity stick and the workload demands more memory per channel.

Handles large datasets and virtualisation

The 64 GB capacity provides headroom for multi-VM hosts, database caching and high-thread-count compute tasks. It runs out when the platform's maximum memory per socket or total slot count is reached, or when an application requires load-reduced or unbuffered memory types that this registered module cannot mix with.

Highlights

  • 64GB capacity expands server memory headroom for virtualisation
  • ECC registered design corrects single-bit errors to protect data integrity
  • DDR4 3200 CL22 at 1.2V delivers JEDEC-standard throughput
  • Single 2Rx4 288-pin module simplifies slot population
  • Backward compatible with 2133 2400 2666 2933MHz systems

Specifications

BrandOWC
Part Number3R2D42R464GB
Capacity64GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 3200 (PC4 25600)
CAS Latency22
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemGigabyte R162-Z11
Gigabyte R162-ZA0
Gigabyte R162-ZA1
Gigabyte R162-ZA2
Gigabyte R181-Z90

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the 288-pin DDR4 ECC RDIMM fit a Gigabyte R162-Z11 server board?

Yes, this module is validated for the Gigabyte R162-Z11, R162-ZA0, R162-ZA1, R162-ZA2 and R181-Z90 platforms.

What is the correct way to seat a registered ECC DIMM and what step do installers often miss?

Align the key notch with the slot, press straight down until both retention clips click, then verify the module height is even; the step often missed is confirming the clips have fully latched on both sides.

Will the 1.2 V 2Rx4 64 GB module need firmware updates or battery replacement during its service life?

No firmware or battery maintenance is required; the module is a passive JEDEC-compliant DDR4 component designed for the lifetime of the server.

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