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Green rectangular DDR5 RDIMM module with black chips and gold contacts

OWC

OWC 128GB DDR5 5600 CL46 4Rx4 ECC Registered RDIMM SuperServer SYS-111E memory upgrade

SKU CH-DHNJ-VWJ4R

A 128 GB DDR5-5600 ECC registered RDIMM for Supermicro SuperServer SYS-111E and SYS-121C systems

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

Capacity 128GB

  • 128GB capacity expands server memory headroom for heavy workloads
  • DDR5 5600 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design detects and corrects errors to protect data integrity
  • 1V operation reduces power draw in dense configurations
  • Validated for Supermicro SYS-111E and SYS-121C platforms ensuring compatibility

Server-grade DDR5 ECC RDIMM

This single 128GB DDR5 5600 CL46 4Rx4 registered DIMM operates at 1.1V and is built to JEDEC PC5-44800 specification. It targets Supermicro SuperServer SYS-111E and SYS-121C platforms that require registered ECC memory.

Suited for registered-ECC slots only

It fits workstations, NAS appliances, servers and network switches that accept 288-pin DDR5 registered modules. It will not work in consumer desktops or any system that expects unbuffered or load-reduced DIMMs.

Steady throughput at rated speed

The module runs continuously at 5600 MT/s with CL46 latency under sustained server workloads. Registered buffering and on-die ECC maintain data integrity during extended multi-threaded operations without throttling.

How it compares

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

Price $3,508.99
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 $27.41 per GB
Pricier than about 76% 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-111E-FDWTR-OS1
Supermicro SuperServer SYS-111E-FWTR
Supermicro SuperServer SYS-111E-FWTR-OS1
Supermicro SuperServer SYS-111E-WR
Supermicro SuperServer SYS-121C-TN10R

Other versions of this model

5 more in the same range

Questions about this item

Does the SuperServer SYS-111E need a specific processor generation to run this DDR5 5600 ECC Registered RDIMM?

The module is JEDEC-standard DDR5 5600 (PC5-44800) at 1.1 V. It works in any listed SuperServer that supports DDR5 ECC Registered memory; the CPU must provide a DDR5 memory controller.

Can this 128GB DDR5 5600 CL46 4Rx4 ECC Registered RDIMM be mixed with existing ECC Unbuffered UDIMMs in the same SuperServer?

No. The manufacturer highlights state this Registered RDIMM cannot be mixed with unbuffered or load-reduced memory types. All installed DIMMs must be ECC Registered.

How can I verify the module runs at 5600 MT/s and CL46 after installation?

Enter the server BIOS or UEFI and check the memory information screen; it should report DDR5 5600 speed and CAS latency 46 for the installed DIMM.

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