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Green printed circuit board with black memory chips and gold edge connectors

OWC

OWC 128GB DDR5 5600 CL46 4Rx4 288-pin 1.1V ECC RDIMM memory upgrade

SKU CH-GCQ9-TTGD8

A 128GB DDR5 5600 ECC registered DIMM for compatible Supermicro SuperServer systems

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 5600 (PC5 44800)
  • CAS Latency46
  • Voltage1.1V
  • ECCYes

Capacity 128GB

  • 128 GB single module expands server capacity
  • DDR5 5600 CL46 delivers high-throughput data rates
  • ECC registered design protects data integrity in critical workloads
  • 1 V operation reduces power draw per module
  • Validated for Supermicro SuperServer SYS-121C-TN2R and similar systems

Server-grade DDR5 ECC registered module

This 128GB DDR5 5600 CL46 4Rx4 288-pin 1.1V ECC registered RDIMM is built for Supermicro SuperServer SYS-121C-TN2R, SYS-121H-TNR, SYS-211E-FRDN13P, SYS-211E-FRDN2T and SYS-211E-FRN13P platforms. It targets administrators upgrading workstation, NAS, server or network-switch memory where error-correcting registered modules are required. The single-module design adds full capacity in one slot. It will not work in standard desktop computers or alongside unbuffered or load-reduced DIMMs.

Thermals noise and power draw

Operating at 1.1V, the module runs at standard DDR5 voltage for registered server memory. No heat spreader is fitted, so airflow across the DIMM slots handles cooling in typical 1U or 2U chassis. Registered buffering reduces electrical load on the memory controller, helping keep system power draw predictable under sustained workloads. Acoustic impact is negligible because the module has no active components.

Build quality and connector implications

The 288-pin RDIMM form factor matches the listed Supermicro servers exactly, ensuring a secure seat in registered DIMM slots. JEDEC and RoHS compliance confirms adherence to industry electrical and environmental standards. A limited lifetime warranty with advanced replacement and free technical support backs the upgrade. Buyers needing unbuffered ECC or load-reduced memory for other platforms cannot use this module.

Highlights

  • 128 GB single module expands server capacity
  • DDR5 5600 CL46 delivers high-throughput data rates
  • ECC registered design protects data integrity in critical workloads
  • 1 V operation reduces power draw per module
  • Validated for Supermicro SuperServer SYS-121C-TN2R and similar systems

Specifications

BrandOWC
Part Number5R6D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 5600 (PC5 44800)
CAS Latency46
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro SuperServer SYS-121C-TN2R
Supermicro SuperServer SYS-121H-TNR
Supermicro SuperServer SYS-211E-FRDN13P
Supermicro SuperServer SYS-211E-FRDN2T
Supermicro SuperServer SYS-211E-FRN13P

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Questions about this item

How do I install the 288-pin DDR5 ECC RDIMM in my Supermicro SuperServer SYS-121C-TN2R and what step is often missed?

Align the notch on the module with the slot key, press firmly until both retention clips click, and verify the 1.1V registered DIMM is seated in a slot designated for ECC registered memory — mixing with unbuffered or load-reduced DIMMs will prevent boot.

What maintenance or replacement will the 128GB 4Rx4 module need over its service life?

No periodic maintenance is required; the module either passes POST and runs error-free or it fails, at which point the single 128GB DIMM is replaced as a unit under the manufacturer's limited lifetime warranty.

What limit appears first when the 5600 CL46 memory runs sustained workloads?

The CAS latency of 46 cycles at 5600 MT/s sets the baseline access delay; under continuous load the registered buffer and 1.1V operation keep signal integrity stable, so the latency figure itself is the first fixed constraint.

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