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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

OWC

OWC 128GB DDR4 3200 CL22 8Rx4 ECC RDIMM 3R2D48R4128G memory upgrade

SKU CH-QK1Q-TTTGJ

128 GB DDR4 3200 ECC registered RDIMM for Thinkmate HDX servers, single 8Rx4 module at 1.2 V

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • 128GB single module expands server capacity
  • DDR4 3200 speed with CL22 latency
  • ECC registered design protects data integrity
  • 2V operation reduces power consumption
  • Compatible with Thinkmate HDX XN24-32S3 and similar systems

Server ECC Upgrade

This OWC module delivers 128GB of DDR4 3200 ECC Registered memory in a single 288-pin RDIMM. It operates at 1.2V with CL22 latency and an 8Rx4 rank configuration for dense capacity. The part is validated for Thinkmate HDX XN24-32S3, XN24-52S3, XF4-24S3, XS8-24S3 and XN12-52S3 systems. JEDEC and RoHS compliance ensures a warranty-safe upgrade.

Workstation Target

It suits administrators expanding Thinkmate HDX servers or workstations that require registered ECC DIMMs. It is not for standard desktop PCs or consumer motherboards that only accept unbuffered memory. Builders needing load-reduced DIMMs or non-ECC modules should look elsewhere. Mixing with unbuffered or load-reduced memory is not supported.

Build Integration

The module plugs directly into a 288-pin DDR4 RDIMM slot and draws 1.2V, leaving other slots free for further expansion. Backward compatibility with 2133, 2400, 2666 and 2933MHz bus speeds allows integration into existing fleets. No heat spreader is fitted, so airflow clearance follows the chassis design.

How it compares

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

Price $675.99
Pricier than about 55% 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 $5.28 per GB
Cheaper than about 73% 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
Compatibility
Compatible systemsThinkmate HDX XN24-32S3
Thinkmate HDX XN24-52S3
Thinkmate HDX XF4-24S3
Thinkmate HDX XS8-24S3
Thinkmate HDX XN12-52S3

Questions about this item

Does my Thinkmate HDX server need an open 288-pin DDR4 RDIMM slot to install this 128GB module?

Yes. The module is a single 128GB 288-pin ECC Registered DIMM, so one free DDR4 RDIMM slot on a listed Thinkmate HDX model is required.

Will this 3200MHz CL22 ECC RDIMM run correctly alongside existing 2666MHz ECC Registered DIMMs in the same server?

The module is backward compatible with 2133, 2400, 2666 and 2933MHz speeds. Populated together, all DIMMs will operate at the lowest common speed.

How can I confirm the 128GB 8Rx4 module is detected at 3200MHz with ECC active after installation?

Check the BIOS memory summary or run a tool such as dmidecode; it should show 128GB, 3200MT/s, CL22, 8Rx4 organisation and ECC enabled.

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