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Green DDR5 RDIMM with black chips no heat spreader 288 pins

OWC

OWC 128GB DDR5 4800 PC5-38400 CL40 4Rx4 288-pin 1.1V ECC Registered RDIMM for Dell PowerEdge XE9680

SKU CH-JSS6-5W7W6

128 GB DDR5 ECC registered RDIMM running at 4800 MHz with CL40 latency for Dell PowerEdge XE9680 servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB

  • 128 GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high bandwidth for compute workloads
  • ECC registered design protects data integrity in critical applications
  • 1 V operation reduces power draw per module
  • Validated for Dell PowerEdge XE9680 ensures drop-in compatibility

Single-module server upgrade

This OWC DDR5 module provides 128GB of ECC registered memory in a single 288-pin RDIMM. It operates at 4800MHz with CL40 latency and 1.1V voltage. The 4Rx4 rank configuration is designed for the Dell PowerEdge XE9680 server platform.

ECC registered reliability

Error-correcting code detects and corrects single-bit errors to maintain data integrity under continuous workloads. Registered buffering reduces electrical load on the memory controller for stable operation at high capacity. The module replaces Dell part numbers AC449974 and SNPMMWR9C/128G.

Workstation and server builders only

Suitable for administrators expanding memory in a compatible Dell PowerEdge XE9680 or similar workstation, NAS, or server that requires DDR5 ECC registered RDIMMs. Not for desktop PCs, laptops, or consumer motherboards that accept only unbuffered non-ECC memory. Cannot be mixed with load-reduced or unbuffered modules in the same system.

How it compares

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

Price $3,746.99
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).
Price per GB $29.27 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D54R4128G
Total capacity128 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell PowerEdge XE9680

Other versions of this model

5 more in the same range

Questions about this item

What replacement does the 128GB DDR5 4800 ECC RDIMM need when it reaches end of life?

The module is built to JEDEC and RoHS standards and covered by a limited lifetime warranty with an advanced replacement programme.

What limit appears first on the 4Rx4 1.1V registered DIMM during sustained workloads?

The registered buffer and ECC logic add one cycle of latency, so memory-controller bandwidth saturation typically arrives before thermal throttling.

How much noise and heat does the 288-pin 128GB module produce when the XE9680 runs continuously?

With no heat spreader and a 1.1V operating voltage, the stick relies on chassis airflow; it adds no fan noise and minimal thermal load.

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