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Single green DDR4 ECC RDIMM 288-pin module, no heat spreader

OWC

OWC 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC RDIMM memory upgrade

SKU CH-BFBC-FKX1W

A single 128GB DDR4 3200 ECC registered RDIMM for Thinkmate RAX servers, running at 1.2V with CL22 latency

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latency22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank8Rx4
  • Maximise server capacity with a single 128GB module
  • ECC registered design protects data integrity in critical workloads
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems
  • Low 1.2V operation reduces power draw in dense configurations

Targeted server memory upgrade

This OWC module delivers 128GB of DDR4 ECC registered memory in a single 288-pin RDIMM. It is built for Thinkmate RAX QS12-12E7, QN10-11E7, QN10-21E2, QN24-12E7 and QN24-22E7 platforms that require registered error-correcting DIMMs. The module operates at 3200MHz with a CAS latency of 22 and runs at 1.2V. It is not compatible with standard desktop computers or unbuffered memory configurations.

Build integration requirements

The RDIMM format and registered buffer demand a motherboard chipset and CPU memory controller that support ECC registered DDR4. Mixing this module with unbuffered or load-reduced DIMMs is not supported and will prevent the system from posting. Backward compatibility with 2133MHz, 2400MHz, 2666MHz and 2933MHz bus speeds allows installation in older slots while the platform negotiates the highest common frequency. No heat spreader is fitted, so chassis airflow must cover the bare PCB.

Sustained workload behaviour

JEDEC-standard construction and 8Rx4 organisation provide the signal integrity needed for continuous server and workstation operation. Error-correcting code detects and corrects single-bit errors in real time, reducing silent data corruption during long compute runs. The registered buffer reduces electrical load on the memory controller, helping maintain stability when all slots are populated. ROHS-compliant materials meet environmental requirements for 24/7 deployment.

How it compares

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

Price $763.99
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 $5.97 per GB
Cheaper than about 66% 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 RAX QS12-12E7
Thinkmate RAX QN10-11E7
Thinkmate RAX QN10-21E2
Thinkmate RAX QN24-12E7
Thinkmate RAX QN24-22E7

Questions about this item

How does the CL22 latency affect performance when the 128GB module runs at 3200MHz under sustained load?

The CL22 timing at 3200MHz provides standard DDR4 latency for registered ECC modules; the 8Rx4 rank structure distributes access across multiple banks to maintain throughput during continuous server workloads.

What thermal or power impact should I expect from a 1.2V registered DIMM running continuously in a Thinkmate RAX chassis?

Operating at 1.2V without a heat spreader, the module relies on chassis airflow; registered buffering adds minimal power draw, so typical server cooling handles sustained operation without additional thermal management.

Which Thinkmate RAX models must I already own for this 288-pin ECC RDIMM to be compatible?

This module is validated for Thinkmate RAX QS12-12E7, QN10-11E7, QN10-21E2, QN24-12E7 and QN24-22E7 systems requiring DDR4 3200 registered ECC memory.

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