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Green printed circuit board with black memory chips in a single row, gold edge connector, no heat spreader

OWC

OWC 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin ECC RDIMM memory upgrade

SKU CH-QVCV-N9031

A 128GB DDR4 3200 ECC registered RDIMM for ASUS rack servers RS500A-E9 and RS520A-E11 series

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128GB capacity in a single module expands server memory density
  • DDR4 3200 speed with CL22 latency delivers high-throughput registered performance
  • ECC registered design detects and corrects data errors for workload reliability
  • 2V operation reduces power draw while maintaining JEDEC-standard compliance
  • Backward compatible with 2133, 2400, 2666 and 2933MHz platforms for flexible deployment

128GB DDR4 ECC Registered RDIMM

This 128GB DDR4 3200 module is built for ASUS rack servers including the RS500A-E9-RS4 and RS520A-E11-RS12U. It delivers error-correcting registered memory for workloads that demand data integrity. The single DIMM fits 288-pin slots in compatible workstation and NAS systems. It will not work in standard desktop computers or alongside unbuffered or load-reduced memory.

Capacity and headroom for server workloads

One module provides 128GB of capacity at PC4-25600 speed with CL22 latency. The 8Rx4 organisation and 1.2V operation suit high-density configurations in the listed ASUS platforms. Systems that require more total memory can populate additional slots up to the platform limit. Buyers needing lower-density modules or non-ECC memory for consumer hardware cannot use this product.

DDR4 3200 interface practical limits

The module runs at 3200MHz and is backward compatible with 2133, 2400, 2666 and 2933MHz bus speeds. JEDEC compliance ensures correct timing negotiation at each supported frequency. Registered signalling adds one cycle of command delay, which is standard for this class of memory. Systems that do not support registered ECC DDR4 cannot accept this DIMM.

How it compares

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

Price $723.99
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 $5.66 per GB
Cheaper than about 68% 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 number3R2D48R4128G
Total capacity128 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latency22
ECC supportYes
Buffer typeRegistered
Memory rank8Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Will this 128GB DDR4 3200 CL22 8Rx4 ECC RDIMM run with my existing 2666MHz modules in the ASUS RS500A-E9-RS4?

Yes, the module is backward compatible with 2133MHz, 2400MHz, 2666MHz and 2933MHz speeds, but it must not be mixed with unbuffered or load-reduced ECC memory.

How can I verify the 128GB 8Rx4 registered DIMM is operating correctly at 3200MHz after installation?

Check the system BIOS or UEFI memory configuration screen; it should report 3200MHz speed, CL22 latency, 1.2V voltage and ECC registered status for the installed module.

Does the single 128GB 288-pin DDR4 ECC RDIMM ship with any brackets, cables or thermal pads, or must I source them separately?

The module is supplied alone without heat spreader, brackets, cables or thermal pads; no extra accessories are required for standard server DIMM slot installation.

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