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Green rectangular DDR5 RDIMM module 128GB 288-pin no heat spreader

OWC

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

SKU CH-7WX7-E3ZD1

A single 128GB DDR5 5600 CL46 ECC registered RDIMM for compatible 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 capacity expands server memory headroom
  • DDR5 5600 speed delivers high data throughput
  • CL46 latency supports responsive workloads
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw

Server-grade DDR5 upgrade

This OWC 128GB DDR5 5600 CL46 ECC registered DIMM is built for Supermicro SuperServer platforms including the SYS-421GE-TNHR2-LCC SYS-421GE-TNRT SYS-421GE-TNRT3 and SYS-421GU-TNXR. It targets administrators expanding memory capacity in workstations NAS systems and network switches that require registered error-correcting modules. The single-module design simplifies slot population in dense server chassis.

Thermals and power draw

Operating at 1.1V the module follows JEDEC DDR5 voltage standards for lower power consumption per gigabyte compared with previous generations. No heat spreader is fitted so airflow across the bare PCB handles thermal dissipation in typical server environments. Registered buffering reduces electrical load on the memory controller contributing to stable operation under sustained workloads.

Build and connectivity

The 288-pin RDIMM form factor with 4Rx4 organisation plugs directly into compatible Supermicro DDR5 slots without adapters. JEDEC and RoHS compliance ensures the module meets industry specifications for warranty-safe upgrades. ECC registered architecture prevents mixing with unbuffered or load-reduced DIMMs so identical modules must populate each channel for correct operation.

How it compares

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

Price $3,838.99
Pricier than about 76% 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 $29.99 per GB
Pricier than about 85% 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-421GE-TNHR2-LCC
Supermicro SuperServer SYS-421GE-TNRT
Supermicro SuperServer SYS-421GE-TNRT3
Supermicro SuperServer SYS-421GU-TNXR

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin DDR5 RDIMM in my Supermicro SuperServer SYS-421GE-TNHR2-LCC and which slot order is critical?

Power down, open the chassis, align the keyed 288-pin edge connector with the DDR5 slot notch, press firmly until both ejector clips click shut, then populate slots per the motherboard manual channel sequence for registered memory.

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

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, but if correctable-error counters in the BMC log climb steadily, plan to replace the DIMM before uncorrectable faults appear.

What limit appears first when the 5600 CL46 1.1V RDIMM runs sustained workloads in a SYS-421GU-TNXR?

The registered buffer and on-die ECC add latency, so memory-controller throughput saturation typically arrives before thermal throttling at the standard 1.1 V operating point.

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