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Green rectangular circuit board with gold edge contacts and black memory chips

OWC

OWC 128GB DDR5 5600 CL46 4Rx4 ECC RDIMM memory upgrade

SKU CH-TS24-KCZYE

A 128GB DDR5 5600 ECC registered DIMM for Supermicro SuperServer SYS-511E-WR, SYS-521C-NR, SYS-521E-WR and SYS-521GE-TNRT

  • 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 fits demanding server workloads
  • DDR5 5600 speed with CL46 latency delivers responsive data handling
  • 1 V operation reduces power draw in dense configurations
  • ECC registered 4Rx4 design protects data integrity in critical systems
  • Validated for Supermicro SuperServer SYS-511E-WR and related platforms

Server-grade DDR5 ECC RDIMM

This OWC module delivers 128GB of DDR5 5600 memory in a single 288-pin registered DIMM. It is built for Supermicro SuperServer SYS-511E-WR, SYS-521C-NR, SYS-521E-WR and SYS-521GE-TNRT platforms that require ECC registered memory. The 4Rx4 organisation and CL46 latency support high-density server configurations.

Registered ECC limits mixing

Registered ECC memory cannot be combined with unbuffered or load-reduced modules on the same platform. The 1.1V JEDEC standard voltage and PC5-44800 speed rating define the electrical and timing envelope for compatible systems. Buyers needing unbuffered or consumer DDR5 cannot use this module.

Single-module density simplifies layout

A single 128GB stick populates one slot, leaving remaining DIMM sockets free for future expansion. The absence of a heat spreader keeps the profile low for dense server chassis airflow. JEDEC and RoHS compliance ensures warranty-safe integration into qualified Supermicro SuperServer platforms.

How it compares

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

Price $4,069.99
Pricier than about 77% 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 $31.80 per GB
Pricier than about 90% 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-511E-WR
Supermicro SuperServer SYS-521C-NR
Supermicro SuperServer SYS-521E-WR
Supermicro SuperServer SYS-521GE-TNRT

Other versions of this model

5 more in the same range

Questions about this item

Should I pick the 128GB module or a smaller kit for my Supermicro SuperServer?

This listing is a single 128GB DDR5 5600 CL46 4Rx4 ECC Registered RDIMM; choose it when your server needs one high-density stick per slot and supports the registered 4Rx4 configuration.

What does the 5600 PC5-44800 rating deliver in my SYS-521E-WR?

The module runs at DDR5 5600 with a CAS latency of 46, providing JEDEC-standard bandwidth of PC5-44800 once the platform trains the memory at that speed.

Will the 288-pin DDR5 ECC Registered interface work in my SYS-511E-WR?

Yes, the 288-pin DDR5 ECC Registered RDIMM form factor matches the memory slots on the listed Supermicro SuperServer models.

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