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Green circuit board with black memory chips, gold edge connectors, no heat spreader

OWC

OWC 5R6D52R464GB 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM memory upgrade

SKU CH-J91J-FPBTA

A 64GB DDR5 ECC registered RDIMM running at 5600 MT/s CL46 and 1.1V for compatible Supermicro workstation and server boards

  • 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 heavy workloads
  • DDR5 5600 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1V operation reduces power draw in dense configurations
  • Validated for Supermicro X13SEI-TF X13SEM-F X13SEM-TF X13SET-G X13SET-GC motherboards

Server ECC RDIMM upgrade

This single 64GB DDR5 5600 CL46 module is an ECC registered DIMM built for workstations, NAS systems, servers and network switches. It uses a 288-pin form factor and operates at 1.1V with a 2Rx4 rank configuration. The part is validated for specific Supermicro motherboards including the X13SEI-TF, X13SEM-F, X13SEM-TF, X13SET-G and X13SET-GC.

Sustained data integrity under load

ECC registered architecture corrects single-bit errors and detects multi-bit errors during continuous operation. Registered buffering reduces electrical load on the memory controller when multiple modules are populated. JEDEC-standard timings at 5600 MT/s maintain stability across extended compute cycles in multi-socket environments.

Verify platform requirements first

This module will not work in standard desktop computers or consumer motherboards. It cannot be mixed with unbuffered or load-reduced ECC memory. Confirm your Supermicro board model matches the validated list and that the memory controller supports registered DDR5 at 5600 MT/s before ordering.

How it compares

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

Price $1,855.99
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 $29.00 per GB
Pricier than about 82% 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 systemsSupermicro Motherboard X13SEI-TF
Supermicro Motherboard X13SEM-F
Supermicro Motherboard X13SEM-TF
Supermicro Motherboard X13SET-G
Supermicro Motherboard X13SET-GC

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.1V DDR5 5600 module draw when the server runs continuously?

Operating at 1.1 volts, this DDR5 5600 RDIMM uses the standard DDR5 voltage, so power draw stays within the JEDEC envelope for registered ECC modules under sustained load.

Which motherboard must I already have for this 64GB 2Rx4 RDIMM to function?

It is validated for Supermicro X13SEI-TF, X13SEM-F, X13SEM-TF, X13SET-G and X13SET-GC motherboards that support DDR5 registered ECC memory.

Can I add this CL46 registered DIMM alongside older unbuffered ECC sticks I kept from a previous build?

No — the module is registered ECC and cannot be mixed with unbuffered or load-reduced ECC memory; all slots must use registered DIMMs.

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