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Green bare circuit board with black memory chips and gold edge contacts

OWC

OWC 5R6D52R464GB 64GB DDR5 5600 ECC RDIMM memory upgrade

SKU CH-2KNH-HGY7D

A 64 GB DDR5 5600 ECC registered RDIMM for compatible Supermicro SuperServer workstations and servers

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

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64GB single module expands memory capacity efficiently
  • DDR5 5600 speed delivers high bandwidth for workloads
  • 1V operation reduces power consumption per module
  • Validated for specific Supermicro SuperServer models

Server Memory Upgrade

This OWC 64GB DDR5 5600 ECC Registered RDIMM is built for Supermicro SuperServer SYS-121C-TN2R, SYS-121H-TNR, SYS-211E-FRDN13P, SYS-211E-FRDN2T and SYS-211E-FRN13P systems. It targets administrators who need to expand memory capacity in compatible workstation or server platforms.

Replacing Lower Capacity Modules

The 64GB dual-rank module upgrades from smaller DIMMs when the platform supports DDR5 5600 PC5-44800 CL46 at 1.1V. The jump is worth it when workloads demand higher density per slot and the server qualifies registered ECC memory.

Verify Platform Compatibility

Confirm the exact SuperServer model matches the listed SYS-121 or SYS-211 part numbers before ordering. This registered ECC RDIMM will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced memory types.

How it compares

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

Price $1,807.99
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 $28.25 per GB
Pricier than about 79% 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-121C-TN2R
Supermicro SuperServer SYS-121H-TNR
Supermicro SuperServer SYS-211E-FRDN13P
Supermicro SuperServer SYS-211E-FRDN2T
Supermicro SuperServer SYS-211E-FRN13P

Other versions of this model

5 more in the same range

Questions about this item

What slot type and pin count does the 64 GB DDR5 module need to fit in a Supermicro SuperServer SYS-211E-FRDN2T?

The module uses a 288-pin DDR5 RDIMM form factor, so the server must provide a matching 288-pin DDR5 DIMM slot.

How do you install the 64 GB ECC Registered DIMM, and which step do installers often miss?

Power down the server, open the chassis, align the notch on the 288-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that the 5600 MHz speed and ECC are active — skipping the BIOS check is the common oversight.

What ongoing care does the 64 GB DDR5 5600 CL46 RDIMM require in a Supermicro SuperServer SYS-121H-TNR?

No scheduled maintenance is needed; keep the server air filters clean so the 1.1 V module stays within thermal limits, and replace the DIMM only if memory diagnostics report correctable or uncorrectable ECC errors.

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