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Green rectangular DDR5 memory module with gold edge contacts and black chips, no heat spreader

OWC

OWC 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM Gigabyte G363-SR0 G493-Series memory upgrade

SKU CH-CRMF-E81B4

64 GB DDR5 ECC registered RDIMM at 5600 MT/s CL46, validated for Gigabyte G363-SR0 and G493-series servers

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

Capacity 64GB

  • 64GB capacity expands server memory for larger workloads
  • DDR5 5600 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design detects and corrects errors to protect data integrity
  • 1V operation reduces power draw in dense configurations
  • Validated for Gigabyte G363-SR0 and G493 series systems

Target server module

This OWC 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM is built for the Gigabyte G363-SR0 and G493-Series platforms. It delivers a single 64GB module rated at PC5-44800 with JEDEC-standard timings and voltage. The registered design and ECC function are intended for workloads that demand data integrity and sustained uptime.

Workstation and server builders only

This memory suits administrators upgrading compatible Gigabyte servers or workstations that require registered ECC DDR5. It will not operate in standard desktop mainboards, consumer laptops, or any system that accepts only unbuffered non-ECC modules. Builders needing load-reduced DIMMs or mixed-rank populations should verify platform qualifications before purchasing.

Registered ECC DDR5 requirement

The single specification that decides fitment is the registered ECC DDR5 interface; only platforms explicitly qualified for 288-pin RDIMM at 5600 MT/s with CL46 latency and 1.1V operation can use this module. Systems limited to UDIMM, LRDIMM, or different DDR generations cannot accept it.

How it compares

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

Price $1,877.99
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 $29.34 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

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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 G363-SR0
Gigabyte G493-SB0
Gigabyte G493-SB1
Gigabyte G493-SB2
Gigabyte G493-SB3

Other versions of this model

5 more in the same range

Questions about this item

Will the 2Rx4 registered DIMM need any firmware updates or pairing when I add more modules later?

No firmware or pairing is required; each 64 GB DDR5 5600 CL46 2Rx4 registered module is JEDEC-compliant and installs independently in any supported slot on the Gigabyte G363-SR0 or G493 series.

What thermal limit appears first when the module runs at 5600 MT/s continuously in a dense server chassis?

The 1.1 V DDR5 DRAM reaches its maximum junction temperature before the registered buffer does, so sustained 5600 MT/s operation relies on adequate chassis airflow across the bare PCB.

How much power does a single 64 GB stick draw at 5600 MT/s under all-day load?

At 1.1 V the module draws roughly 5–7 W typical at 5600 MT/s, so a fully populated G493 system stays within standard DDR5 registered DIMM power envelopes.

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