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Green printed circuit board with black chips, gold contacts, no heat spreader

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

  • Total capacity128 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

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.

How it compares

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

Price $3,708.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% 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 $28.98 per GB
Pricier than about 82% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D54R4128G
Total capacity128 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro 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

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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