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Green rectangular circuit board with gold contacts and black memory chips along both sides

OWC

OWC 128GB DDR4 3200 CL22 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM for Supermicro MEM-DR412MG-LR32 server RAM

SKU CH-9X94-J6N0T

A 128 GB DDR4 3200 ECC load-reduced DIMM for servers, workstations and NAS systems, backward compatible with 2133, 2400, 2666 and 2933 MHz

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4
  • 128GB capacity lets servers handle large workloads
  • DDR4 3200 speed with CL22 latency supports fast data access
  • ECC load-reduced design improves signal integrity for stability
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems

128GB DDR4-3200 ECC LRDIMM for servers

This 128GB DDR4 3200 CL22 module uses a 288-pin load-reduced form factor with 4Rx4 organisation and ECC. It operates at 1.2V and is built for Supermicro MEM-DR412MG-LR32 platforms. The memory targets server, workstation and NAS administrators who need maximum capacity per slot. It will not work in standard desktop computers.

Installation and common issues

The DIMM installs like any 288-pin DDR4 module but requires a motherboard that supports load-reduced ECC memory. Mixing this module with unbuffered or registered ECC DIMMs will prevent the system from booting. Servers often need a BIOS update before recognising the full 128GB capacity per slot. Always populate slots according to the vendor memory population guide.

Check your platform before ordering

Verify that your system board lists load-reduced ECC DDR4 as a supported memory type. Confirm the maximum DIMM capacity per slot and the total number of slots available. Ensure the BIOS version in use supports 4Rx4 modules at the rated speed. The module is backward compatible with 2133, 2400, 2666 and 2933MHz bus speeds if the platform requires a lower frequency.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $799.99
Pricier than about 77% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $6.25 per GB
Cheaper than about 61% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number3L2D44R4128G
Total capacity128 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

Questions about this item

How can I verify the 128GB DDR4 3200 CL22 module is running at 3200MHz after installation?

Check the BIOS or UEFI memory information screen; it should report 3200MHz speed, CL22 latency, 1.2V voltage and ECC Load Reduced status for each installed 288-pin DIMM.

What comes in the box with the OWC 128GB LRDIMM and do I need any extra parts?

The package contains the single 128GB 288-pin DDR4 ECC Load Reduced DIMM; no cables, brackets or additional components are required for installation in a compatible server or workstation slot.

Which capacity and speed version should I choose for a Supermicro MEM-DR412MG-LR32 replacement?

Select the 128GB DDR4 3200 (PC4-25600) CL22 4Rx4 1.2V ECC Load Reduced LRDIMM; it matches the Supermicro part number and supports backward compatibility with 2133, 2400, 2666 and 2933MHz systems.

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