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Green bare circuit board DDR5 RDIMM module with black memory chips

OWC

OWC 64GB DDR5 5600 CL46 ECC Registered RDIMM Memory Upgrade

SKU CH-0HYV-TM8X2

A single 64 GB DDR5 ECC registered RDIMM running at 5600 MT/s with CL46 latency and 1.1 V operation, validated for Supermicro SuperServer SYS-221H and SYS-221HE models

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

Capacity 64GB

  • 64 GB capacity supports large server workloads
  • DDR5 5600 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for Supermicro SuperServer SYS-221H and SYS-221HE systems

Server-grade DDR5 RDIMM

This 64GB DDR5 module runs at 5600MHz with CL46 latency and operates at 1.1V. It is an ECC Registered DIMM built for workstation and server platforms that require registered memory. The 2Rx4 organisation and 288-pin form factor match the Supermicro SuperServer SYS-221HE-TNR, SYS-221HE-TNRD, SYS-221H-TN24R and SYS-221H-TNR systems. It will not work in standard desktop computers or alongside unbuffered or load-reduced modules.

Single-module 64GB capacity

One module delivers 64GB of registered ECC memory, expanding a compatible server by a full rank of 2Rx4 chips. The JEDEC-standard PC5-44800 speed provides headroom for multi-threaded workloads and virtualisation. Capacity scales by populating additional slots on the motherboard; the module itself cannot be split or combined with non-registered DIMMs. Systems needing more than one module must add identical registered ECC units.

288-pin registered ECC fit

Installation requires a DDR5 RDIMM slot on a supported Supermicro SuperServer board; the 1.1V operation matches the platform specification. No heat spreader is fitted, so airflow in the chassis must be sufficient for bare modules. The registered buffer reduces electrical load on the memory controller, freeing signal integrity margin for fully populated configurations. Mixing with unbuffered or load-reduced memory is not supported.

How it compares

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

Price $1,758.99
Pricier than about 66% 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 $27.48 per GB
Pricier than about 77% 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 systemsSupermicro SuperServer SYS-221HE-TNR
Supermicro SuperServer SYS-221HE-TNRD
Supermicro SuperServer SYS-221H-TN24R
Supermicro SuperServer SYS-221H-TNR

Other versions of this model

5 more in the same range

Questions about this item

Will this 64GB DDR5 5600 CL46 ECC Registered RDIMM work alongside existing 2Rx4 modules in my Supermicro SYS-221H-TNR?

Yes, match the 2Rx4 rank and 1.1V voltage; do not mix with unbuffered or load-reduced ECC memory.

How can I verify the 5600MHz speed and CL46 latency are active after installing the module?

Check the BIOS memory report or run a tool like CPU-Z to confirm DDR5 5600 and CAS 46 timings.

Does the box contain only the single 64GB 288-pin RDIMM or are extra items included?

The upgrade consists of one 64GB DDR5 5600 PC5-44800 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM module.

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