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Eight green DDR4 LRDIMM modules in static bags

OWC

OWC 1TB (8x128GB) DDR4 3200 CL22 4Rx4 288-pin 1.2V ECC LRDIMM memory upgrade

SKU CH-T7DB-284CW

Eight-module 1 TB DDR4 3200 CL22 ECC LRDIMM kit for compatible Supermicro server boards

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 1TB (8 x 128GB)

  • 1 TB total capacity across eight 128 GB modules
  • DDR4 3200 speed with CL22 latency for server workloads
  • ECC load-reduced design detects errors and reduces electrical load
  • 2 V operation lowers power draw in dense configurations
  • Compatible with Supermicro H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C, H12SSL-i

Server-grade capacity

This OWC kit delivers 1TB of DDR4 ECC LRDIMM memory across eight 128GB modules, built for Supermicro H12 series motherboards. It targets administrators expanding virtualisation hosts, database servers or high-density compute nodes that require maximum registered capacity per slot.

Platform integration

The 288-pin LRDIMMs operate at 1.2V and fit the H12DSG-O-CPU, H12DST-B, H12DSU-iN, H12SSL-C and H12SSL-i boards without mixing with unbuffered or standard registered DIMMs. Backward compatibility with 2133, 2400, 2666 and 2933MHz bus speeds allows deployment in existing DDR4 infrastructures while the load-reduced design reduces electrical load on the memory controller.

Workload headroom

CL22 latency at 3200MHz supports memory-intensive workloads such as in-memory analytics, large VM fleets and container clusters. The 4Rx4 organisation maximises density per channel, though total capacity is bounded by the eight-module kit and the motherboard's slot count; environments needing more than 1TB per CPU must scale across additional sockets or platforms.

How it compares

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

Price $6,296.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $6.30 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3L2D44R41TBK
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsSupermicro Motherboard H12DSG-O-CPU
Supermicro Motherboard H12DST-B
Supermicro Motherboard H12DSU-iN
Supermicro Motherboard H12SSL-C
Supermicro Motherboard H12SSL-i

Other versions of this model

5 more in the same range

Questions about this item

Will the CL22 latency limit throughput when the server runs at 3200 MT/s all day?

CL22 is the rated latency at 3200 MT/s; the modules operate at that timing continuously under load.

Do the eight 128 GB LRDIMMs need active cooling when fully populated in a 1U chassis?

The modules have no heat spreader and run at 1.2 V; airflow across the DIMM slots is the only cooling required.

Must the Supermicro board already support 4Rx4 load-reduced DIMMs before I install this kit?

Yes — the motherboard must accept DDR4 288-pin ECC LRDIMM modules at 4Rx4 organisation.

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