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Green bare circuit board DDR5 ECC RDIMM memory module with black chips

OWC

OWC 64GB DDR5 5600 PC5-44800 CL46 2Rx4 ECC RDIMM memory upgrade

SKU CH-1F8X-M1K2M

A single 64GB DDR5 5600 ECC registered RDIMM with CL46 latency and 1.1V operation for compatible Supermicro SuperServer systems

  • 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 capacity expands memory for demanding workloads
  • DDR5 5600 speed delivers high bandwidth for compute tasks
  • 1V operation reduces power draw per module
  • Validated for Supermicro SYS-211E and SYS-211GT series

OWC 64GB DDR5 ECC RDIMM

This 64GB DDR5 5600 ECC registered DIMM is built for the Supermicro SuperServer SYS-211E-FRN2T and the SYS-211GT series. It delivers error-correcting memory for workstations, NAS systems, servers and network switches. The module uses a 288-pin form factor and operates at 1.1V with a CL46 latency. It will not work in standard desktop computers or alongside unbuffered or load-reduced memory.

Thermals and power

The module runs at the JEDEC-standard 1.1V, keeping power draw low for dense server configurations. No heat spreader is fitted, so airflow across the DIMM slots handles cooling. Registered buffering reduces electrical load on the memory controller, helping stability in multi-DIMM populations. Noise is not a factor for this passive component.

Build integration

The single 64GB rank-2Rx4 design leaves remaining slots free for further capacity expansion. Compatibility is limited to the listed SuperServer models; it cannot be mixed with unbuffered or ECC load-reduced modules. JEDEC and RoHS compliance ensure a warranty-safe upgrade path. Installers should verify the server memory population rules before adding this DIMM.

How it compares

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

Price $1,659.99
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 $25.94 per GB
Pricier than about 71% 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-211E-FRN2T
Supermicro SuperServer SYS-211GT-HNC8F
Supermicro SuperServer SYS-211GT-HNC8R
Supermicro SuperServer SYS-211GT-HNTF
Supermicro SuperServer SYS-211GT-HNTR

Other versions of this model

5 more in the same range

Questions about this item

How do I install this 288-pin DDR5 RDIMM in a Supermicro SYS-211 server, and what step is often missed?

Power down the server, open the chassis, align the module's notch with the slot key, press firmly until both retention clips click, then verify in BIOS that ECC registered mode is active — skipping the BIOS check is the common oversight.

What maintenance or replacement will this 64GB ECC registered module need over its service life?

No routine maintenance is required; the module has no heat spreader or moving parts. Replace it only if memory diagnostics report uncorrectable ECC errors or the server fails to POST with the DIMM seated.

What limit appears first when this PC5-44800 CL46 RDIMM runs sustained workloads in a 1.1V configuration?

The CAS latency of 46 cycles at 5600 MT/s sets the primary timing ceiling; sustained throughput is bound by this latency figure rather than thermal or voltage headroom.

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