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OWC

OWC 128GB DDR5 5600 CL46 4Rx4 288-pin 1.1V ECC RDIMM 5R6D54R4128G

SKU CH-JX7J-0ZKEG

Single 128 GB DDR5 5600 ECC registered RDIMM for select Supermicro SuperServer systems

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

Capacity 128GB

  • 128 GB single-module capacity simplifies high-density server upgrades
  • ECC registered DDR5 5600 protects data integrity in critical workloads
  • 1 V JEDEC-standard voltage reduces power draw per module
  • 4Rx4 288-pin RDIMM form factor fits listed Supermicro SuperServer platforms
  • CL46 latency at PC5-44800 speed balances throughput and stability

OWC 128GB DDR5 ECC RDIMM

This is a single 128GB DDR5 5600 CL46 4Rx4 288-pin 1.1V ECC Registered RDIMM module from OWC. It is built for Supermicro SuperServer platforms including SYS-621C-TN12R, SYS-621H-TN12R, SYS-741GE-TNRT and SYS-751GE-TNRT. The module follows JEDEC and RoHS standards for server and workstation deployment.

For registered ECC server memory only

Suitable for administrators upgrading or repairing the listed Supermicro SuperServer systems that require registered ECC DDR5. Not for desktop PCs, laptops or consumer motherboards that accept only unbuffered non-ECC memory. Also unsuitable for systems needing Load-Reduced DIMMs or a different rank configuration than 4Rx4.

Single 128GB 4Rx4 registered module

The decisive specification is the 128GB capacity delivered in one 4Rx4 registered DIMM running at DDR5 5600 CL46 1.1V. Verify the server memory population rules and maximum supported rank per channel before purchase, because this module occupies one slot with four ranks.

Highlights

  • 128 GB single-module capacity simplifies high-density server upgrades
  • ECC registered DDR5 5600 protects data integrity in critical workloads
  • 1 V JEDEC-standard voltage reduces power draw per module
  • 4Rx4 288-pin RDIMM form factor fits listed Supermicro SuperServer platforms
  • CL46 latency at PC5-44800 speed balances throughput and stability

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-621C-TN12R
Supermicro SuperServer SYS-621H-TN12R
Supermicro SuperServer SYS-741GE-TNRT
Supermicro SuperServer SYS-751GE-TNRT

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I verify the 128GB DDR5 5600 module is running at its rated speed and latency after installation?

Enter the server BIOS or use a tool like dmidecode to confirm the memory reports 5600 MT/s, CL46, 1.1V and ECC registered operation.

What ships with the 5R6D54R4128G module and what extra items are required?

The box contains the single 128GB 288-pin DDR5 ECC RDIMM only; no cables, brackets or additional components are included or needed for installation.

Which capacity and rank should I choose for a Supermicro SYS-741GE-TNRT?

This part is a single 128GB 4Rx4 registered DIMM validated for the SYS-741GE-TNRT; select it when you need maximum density per slot.

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