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Green circuit board DDR5 ECC registered memory module with gold contacts and black chips

OWC

OWC 64GB DDR5 5600 ECC RDIMM CL46 1.1V 2Rx4 Gigabyte MS33/73

SKU CH-ZNC1-EWHWC

A 64GB DDR5 5600 ECC registered DIMM for Gigabyte MS33 and MS73 servers

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64 GB capacity lets servers handle larger workloads
  • DDR5 5600 speed delivers high data throughput
  • ECC registered design protects data integrity in critical systems
  • 1 V operation reduces power draw per module
  • Validated for Gigabyte MS33 and MS73 platforms

64GB DDR5 ECC RDIMM for Gigabyte servers

This 64GB DDR5 5600 ECC Registered RDIMM is built for Gigabyte MS33 and MS73 workstation and server platforms. It operates at 1.1V with a CAS latency of 46 and a 2Rx4 rank configuration. The module is designed for environments that require error-correcting registered memory.

JEDEC standard voltage and registered design

The module runs at the standard DDR5 voltage of 1.1V and uses a registered buffer to reduce electrical load on the memory controller. No heat spreader is fitted, so airflow within the server chassis manages thermals. Power draw follows the JEDEC specification for PC5-44800 registered DIMMs.

ECC Registered — not for standard desktops

This memory is ECC Registered and will not work in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or load-reduced DIMMs. Buyers needing non-ECC or unbuffered memory for a regular PC must choose a different module type.

How it compares

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

Price $1,880.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $29.39 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsGigabyte MS33-AR0
Gigabyte MS33-AR1
Gigabyte MS33-CP0
Gigabyte MS73-HB0
Gigabyte MS73-HB2

Other versions of this model

5 more in the same range

Questions about this item

How do I install this 288-pin DDR5 ECC RDIMM in my Gigabyte MS73-HB0, and what step do people often get wrong?

Align the single key notch on the module with the slot ridge, press straight down until both retention clips click, and verify the system registers 64GB at 5600 MT/s; the common mistake is seating the module at an angle, which bends the gold contacts.

What maintenance or replacement will this 64GB DDR5 5600 CL46 1.1V module need later?

No periodic maintenance is required; keep the server chassis filters clean so airflow stays steady over the bare PCB, and replace the DIMM only if memory diagnostics report uncorrectable ECC errors.

What limit appears first when this 2Rx4 registered DIMM runs sustained workloads?

The CAS latency of 46 cycles at 5600 MT/s sets the latency floor, so memory-bound threads hit timing delays before bandwidth or thermal limits become a factor.

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