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

OWC

OWC 3R2D44R4128G 128GB DDR4 3200MHz CL22 ECC RDIMM memory upgrade

SKU CH-1YKS-T90WN

128 GB DDR4 3200 MHz ECC registered RDIMM for Supermicro H11DSi, H11DSi-NT, H11DST-B, H11DSU-iN and H11SSL-C motherboards

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB

  • 128GB capacity supports demanding server workloads
  • DDR4 3200MHz speed delivers high data throughput
  • CL22 latency ensures responsive memory access
  • ECC registered design protects data integrity
  • Compatible with five Supermicro H11 motherboard models

OWC 128GB DDR4 ECC RDIMM

This OWC module delivers 128GB of DDR4 3200MHz registered ECC memory in a single 288-pin DIMM. It operates at CL22 latency and 1.2V for Supermicro H11DSi, H11DSi-NT, H11DST-B, H11DSU-iN and H11SSL-C motherboards. The 4Rx4 configuration targets servers and workstations that require maximum capacity per slot.

Verify motherboard and memory type before ordering

Confirm your board is one of the five listed Supermicro models and that it supports registered ECC RDIMMs. This memory will not work in standard desktop computers and cannot be mixed with unbuffered modules. Ensure all installed DIMMs share the same capacity, speed and manufacturer for optimal stability.

Thermals and power in normal use

The module runs at the standard 1.2V DDR4 voltage without a heat spreader, relying on chassis airflow for cooling. Registered ECC operation adds minimal overhead compared with unbuffered memory. Power draw scales with the 128GB density and 3200MHz speed under typical server workloads.

How it compares

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

Price $720.99
Pricier than about 56% 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 $5.63 per GB
Cheaper than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D44R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard H11DSi
Supermicro Motherboard H11DSi-NT
Supermicro Motherboard H11DST-B
Supermicro Motherboard H11DSU-iN
Supermicro Motherboard H11SSL-C

Other versions of this model

5 more in the same range

Questions about this item

Does the 128GB DDR4 3200MHz CL22 ECC RDIMM arrive as a single module or a kit, and are any extra parts required for installation?

The product is a single 128GB 288-pin DDR4 ECC registered DIMM. No additional components are needed; it installs directly into a compatible Supermicro motherboard DIMM slot.

Should I choose this 128GB CL22 module or a lower-capacity alternative for my Supermicro H11DSi system?

Select this 128GB module when the workload demands maximum memory per slot. For lighter workloads or budgets, smaller-capacity DDR4 3200 ECC RDIMMs of the same speed and voltage can be used, but OWC recommends matching capacity, speed and manufacturer across all populated slots.

What does the 3200MHz PC4-25600 rating deliver in a live Supermicro H11SSL-C server?

The module runs at DDR4 3200 with CL22 latency and 1.2V, providing the peak bandwidth and error-correcting stability the H11SSL-C platform expects for virtualization, database or compute tasks.

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