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OWC

OWC 128GB DDR4 3200 ECC Registered RDIMM 288-Pin 4Rx4 1.2V CL22 MEM-DR412L-SL01-ER32 Server RAM

SKU CH-H444-5RQ35

128 GB DDR4 3200 ECC registered RDIMM with CL22 latency, 1.2 V operation and 4Rx4 rank for server workloads

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4
  • 128 GB capacity lets servers handle massive datasets
  • ECC registered design protects data integrity in critical workloads
  • 3200 MHz DDR4 speed delivers high bandwidth for demanding applications
  • 2 V operation reduces power draw and heat output
  • 288-pin RDIMM form factor fits standard server memory slots

128 GB DDR4 ECC RDIMM for Servers

This 128 GB DDR4 3200 ECC registered RDIMM targets workstation and server administrators who need high-density error-correcting memory. It suits infrastructure upgrades where data integrity and maximum capacity per slot are priorities. Standard desktop PCs cannot use this module.

Registered ECC Limits and Compatibility

Registered ECC memory requires a motherboard chipset and CPU that support registered DIMMs and ECC functionality. Mixing this 4Rx4 module with unbuffered DIMMs will prevent the system from booting. JEDEC DDR4 3200 operation at 1.2 V is the specified electrical envelope.

Installation Notes and Common Issues

The 288-pin DDR4 keying fits only DDR4 server slots; forcing it into a different generation damages the socket. All installed DIMMs should match capacity, speed and rank for stable operation. A missing heat spreader means airflow across the module must be adequate.

How it compares

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

Price $704.99
Pricier than about 75% 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 $5.51 per GB
Cheaper than about 69% of the 6,064 comparable items (median $7.25 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

Questions about this item

Is the 128GB 4Rx4 module the right choice, or should I pick a lower-capacity or dual-rank option?

This part is a single 128GB 4Rx4 RDIMM. Choose it when your server board supports 4Rx4 registered DIMMs and you need maximum capacity per slot; otherwise select a lower-capacity or dual-rank module that matches your platform's qualified-vendor list.

What does DDR4 3200 (PC4-25600) CL22 deliver once installed in a compatible server?

The module operates at 3200 MT/s with CL22 timing at 1.2V, giving the rated JEDEC throughput for registered ECC memory when the memory controller runs at that speed.

Does the 288-pin registered ECC DDR4 interface limit mixing with other memory types?

Yes. The 288-pin registered ECC DDR4 RDIMM cannot be mixed with unbuffered or non-ECC DIMMs, and all populated slots should use identical registered ECC modules for stable operation.

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