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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade Cisco UCS C4200

SKU CH-091C-M99P2

128 GB DDR4 3200 ECC registered RDIMM for Cisco UCS C4200, C240 M6, C220 M6 and C125 M5 servers

  • 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-standard DDR4 3200 CL22 ensures broad compatibility
  • Low 1.2V voltage reduces power draw per DIMM
  • Validated for Cisco UCS C4200, C125 M5, C220 M6, C240 M6, C245 M6

OWC 128GB DDR4 3200 ECC RDIMM

This single 128GB DDR4 3200 PC4-25600 CL22 8Rx4 288-pin 1.2V ECC Registered RDIMM is built for servers and workstations. It is validated for Cisco UCS C4200, C125 M5, C220 M6, C240 M6 and C245 M6 platforms. The module meets JEDEC and RoHS standards and carries a limited lifetime warranty with free technical support.

Compatibility and configuration checks

Confirm your system requires DDR4 ECC Registered memory, as this module will not work in standard desktops or with unbuffered or load-reduced DIMMs. Verify the motherboard supports 8Rx4 rank organisation and 1.2V operation. The rated speed is 3200MHz with CL22 latency; the module is backward compatible with 2133MHz, 2400MHz, 2666MHz and 2933MHz bus speeds. No heat spreader is fitted, so ensure adequate chassis airflow.

Suited for Cisco UCS server upgrades

Ideal for administrators expanding memory in the listed Cisco UCS models or similar DDR4 ECC Registered platforms. Not suitable for consumer desktops, laptops or any system that requires unbuffered non-ECC or load-reduced memory. Buyers needing different capacities, speeds or rank configurations should look for modules matching those exact specifications.

How it compares

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

Price $667.99
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 $5.22 per GB
Cheaper than about 74% of the 20,941 comparable items (median $8.19 per GB).

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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 systemsCisco UCS C4200
Cisco UCS C125 M5
Cisco UCS C220 M6
Cisco UCS C240 M6
Cisco UCS C245 M6

Questions about this item

Does the 128 GB DDR4 3200 module come alone or with extras?

The package contains one 128 GB DDR4 3200 ECC registered RDIMM; no cables, brackets or additional modules are included.

When should I pick this 128 GB 8Rx4 version instead of a smaller capacity?

Choose the 128 GB 8Rx4 module when you need maximum capacity per slot in a Cisco UCS C4200, C125 M5, C220 M6, C240 M6 or C245 M6.

What does the PC4-25600 3200 MHz rating mean once installed?

The module runs at up to 3200 MHz with CL22 latency and will down-clock to 2933, 2666, 2400 or 2133 MHz if the platform requires it.

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