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Green circuit board with gold edge connectors and black memory chips

OWC

OWC 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM 3R2D48R4128G

SKU CH-YMV5-AB9N4

Single 128GB DDR4 3200 ECC registered RDIMM for ASUS RS720A-E11-RS24U RS720A-E9-RS24-E RS720-E10-RS12 rack servers

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128GB single module maximises server density
  • DDR4 3200 CL22 delivers 25600 MT/s throughput
  • ECC registered 8Rx4 protects data integrity
  • 2V JEDEC standard keeps power draw low
  • Backward compatible with 2133, 2400, 2666, 2933MHz systems

128GB DDR4 3200 ECC RDIMM

This 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM is built for ASUS rack servers including the RS720A-E11-RS24U, RS720A-E9-RS24-E and RS720-E10-RS12 models. It delivers registered error-correcting memory for workloads that require data integrity.

Server and workstation upgrades only

The module suits administrators expanding memory in the listed ASUS rack servers or compatible workstation and NAS platforms. It will not work in standard desktop computers and cannot be mixed with unbuffered or load-reduced ECC DIMMs. Buyers needing consumer memory should look elsewhere.

JEDEC and ROHS compliant module

The single DIMM meets JEDEC standards and ROHS requirements for a warranty-safe upgrade. Backward compatibility with 2133MHz, 2400MHz, 2666MHz and 2933MHz speeds allows installation in slower memory banks without configuration changes. No heat spreader is included.

How it compares

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

Price $774.99
Pricier than about 57% 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 $6.05 per GB
Cheaper than about 65% 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

Does this 288-pin DDR4 3200 module require an ASUS RS720 series rack server to operate?

Yes, the module is validated for ASUS Rack Server RS720A-E11-RS24U, RS720A-E9-RS24-E, RS720-E10-RS12 and RS720-E10-RS12E. It will not work in standard desktop PCs.

Can I install this 8Rx4 registered ECC DIMM alongside existing 2133 MHz or 2400 MHz modules in the same server?

The DIMM is backward compatible with 2133 MHz, 2400 MHz, 2666 MHz and 2933 MHz speeds, but it cannot be mixed with unbuffered or load-reduced ECC memory.

How can I confirm the single 128 GB stick is running at the rated 3200 MT/s CL22 after installation?

Check the server BIOS or a hardware utility such as CPU-Z; it should report DDR4-3200, CAS latency 22, 1.2 V and registered ECC operation.

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