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OWC

OWC 128GB DDR4 3200 ECC Load Reduced LRDIMM 4Rx4 CL22 1.2V 288-pin memory upgrade

SKU CH-3R79-GKCA9

128 GB DDR4 3200 ECC load-reduced LRDIMM for compatible Gigabyte servers, CL22 at 1.2 V

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 128GB

  • 128GB capacity enables dense server configurations
  • DDR4 3200 speed with CL22 latency for responsive workloads
  • ECC load-reduced design protects data integrity in critical systems
  • 2V operation reduces power draw per module
  • Validated for Gigabyte MZ32-AR0 MZ32-AR1 MZ71-CE0 MZ71-CE1 MZ72-HB0

128GB DDR4 3200 ECC LRDIMM for Gigabyte servers

This 128GB module targets administrators upgrading Gigabyte MZ32-AR0, MZ32-AR1, MZ71-CE0, MZ71-CE1 or MZ72-HB0 platforms. It delivers registered ECC load-reduced memory for multi-socket servers and workstations that require high capacity per slot. The module will not function in standard desktop boards or consumer laptops. Buyers needing unbuffered or standard registered DIMMs cannot use this product.

DDR4 3200 with backward speed steps

The JEDEC-standard PC4-25600 interface runs at 3200 MT/s with CL22 latency at 1.2V. The same module also operates at 2133, 2400, 2666 and 2933 MT/s when the platform demands a lower data rate. Load-reduced architecture reduces electrical load on the memory controller, enabling the 4Rx4 organisation at this density. Mixing with unbuffered or standard registered ECC DIMMs is not supported by the memory controller.

288-pin LRDIMM without heat spreader

The bare 288-pin PCB fits dense server DIMM arrays where tall heat spreaders would block adjacent slots or airflow ducts. Gold-edge contacts meet RoHS and JEDEC mechanical specs for reliable insertion cycles during maintenance. ECC load-reduced circuitry provides single-bit correction and multi-bit detection for data integrity in 24/7 workloads. Builders populating every channel should verify the platform's maximum rank count per channel before installing four-rank modules.

How it compares

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

Price $714.99
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).
CAS latency 22
Typical for this category: the median of 483 items is 22.
Price per GB $5.59 per GB
Cheaper than about 69% of the 20,941 comparable items (median $8.19 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 latency22
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsGigabyte MZ32-AR0
Gigabyte MZ32-AR1
Gigabyte MZ71-CE0
Gigabyte MZ71-CE1
Gigabyte MZ72-HB0

Other versions of this model

5 more in the same range

Questions about this item

Should I choose the 128GB 4Rx4 LRDIMM or a smaller capacity for my Gigabyte MZ32-AR0?

The 128GB 4Rx4 LRDIMM maximises density per slot, letting you reach higher total memory on the MZ32-AR0 without filling every DIMM socket.

What does the 3200MHz PC4-25600 rating deliver once installed in a Gigabyte MZ71-CE1 server?

The module runs at 3200MHz CL22 when the platform supports it, and will down-clock to 2933MHz, 2666MHz, 2400MHz or 2133MHz if the CPU or BIOS requires a lower speed.

How does the 288-pin DDR4 LRDIMM interface affect maximum capacity on a Gigabyte MZ72-HB0?

The 288-pin LRDIMM interface reduces electrical load on the memory bus, allowing the MZ72-HB0 to populate more slots with 128GB modules than standard registered DIMMs would permit.

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