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Green circuit board with gold contacts and black memory chips, no heat spreader

OWC

OWC 64GB DDR4 3200 ECC Registered RDIMM 2Rx4 Gigabyte MZ72-HB2 R152-P30/31/32/33

SKU CH-HJWE-P5YBW

A 64 GB DDR4 3200 ECC registered RDIMM for Gigabyte MZ72-HB2 and R152-P30/31/32/33 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 supports heavy server workloads
  • DDR4 3200 speed with CL22 latency delivers responsive data access
  • ECC registered design protects data integrity in workstations
  • 2V operation reduces power draw and heat
  • Backward compatible with 2133, 2400, 2666, 2933MHz systems

Server ECC Upgrade

This 64GB DDR4 3200 ECC Registered RDIMM is built for Gigabyte MZ72-HB2 and R152-P30 through R152-P33 platforms. It targets administrators who need single-module capacity in workstations, servers or NAS systems that require registered memory with error correction.

Registered DDR4 Constraints

The module operates at 1.2V with CL22 latency and a 2Rx4 organisation on a 288-pin interface. It cannot be mixed with unbuffered or load-reduced ECC DIMMs, and it will not function in standard desktop boards that lack registered memory support.

64GB Single-Module Headroom

A single stick delivers 64GB at PC4-25600 speed while remaining backward compatible with 2133, 2400, 2666 and 2933MHz buses. Capacity scales with available slots, but the registered design limits maximum density per channel to the platform's qualified vendor list.

Highlights

  • 64GB capacity supports heavy server workloads
  • DDR4 3200 speed with CL22 latency delivers responsive data access
  • ECC registered design protects data integrity in workstations
  • 2V operation reduces power draw and heat
  • 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 MZ72-HB2
Gigabyte R152-P30
Gigabyte R152-P31
Gigabyte R152-P32
Gigabyte R152-P33

Other versions of this model

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

Questions about this item

Which OWC DDR4 3200 ECC Registered RDIMM capacity should I select for my Gigabyte MZ72-HB2 server?

This module provides a single 64GB stick (part number 3R2D42R464GB) that is validated for the MZ72-HB2 and R152-P30/31/32/33 platforms.

What does the 3200MHz PC4-25600 rating mean when the module is installed in my Gigabyte server?

The memory will run at up to 3200MHz CL22 at 1.2V; if the platform only supports lower speeds it will automatically operate at 2933MHz, 2666MHz, 2400MHz or 2133MHz.

Will the 288-pin DDR4 ECC Registered interface work with my Gigabyte MZ72-HB2 motherboard?

Yes, the 288-pin RDIMM form factor with ECC and registered buffering is the exact specification required by the MZ72-HB2 and R152-P30/31/32/33 systems.

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