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Eight green DDR4 RDIMM modules in a row

OWC

OWC 256GB (8x32GB) DDR4 3200 PC4-25600 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-X1P2-VTS4F

Eight 32 GB DDR4 3200 registered ECC RDIMMs totalling 256 GB for Cisco UCS C4200 servers

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 256GB (8 x 32GB)

Show 2 more
  • 256 GB total capacity from eight 32 GB modules
  • DDR4 3200 speed with CL22 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 2 V operation reduces power draw in dense configs
  • Validated for Cisco UCS C4200 replacing part 15-107238-01

Cisco UCS C4200 upgrade kit

This 256GB kit contains eight 32GB DDR4 3200 PC4-25600 modules built to the 288-pin RDIMM form factor. Each stick runs at 1.2V with CL22 latency and uses a 2Rx4 registered ECC design. The kit is validated for the Cisco UCS C4200 server platform and replaces Cisco part numbers 15-107238-01, UCSMRX32G2RW and UCSXMRX32G2RW.

Registered ECC for server workloads

The modules provide error-correcting code and registered buffering required by the Cisco UCS C4200 memory subsystem. They will not work in standard desktop boards that accept only unbuffered non-ECC DIMMs, and they cannot be mixed with load-reduced ECC memory. Buyers needing consumer desktop memory or a different capacity per module should select another product.

Sustained throughput under load

Registered ECC operation adds a clock cycle of buffering but maintains data integrity during continuous read-write cycles typical of virtualisation and database tasks. The 3200 MT/s rate and CL22 timing deliver predictable bandwidth across all eight channels when the server populates every slot. Thermal load stays within JEDEC limits because the modules ship without heat spreaders and rely on chassis airflow.

How it compares

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

Price $1,656.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.47 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D42R4256K
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS C4200

Other versions of this model

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Questions about this item

My server has DDR4 slots — will these 288-pin 1.2V ECC Registered RDIMMs work in it?

These modules are validated for the Cisco UCS C4200 and replace Cisco part numbers 15-107238-01, UCSMRX32G2RW and UCSXMRX32G2RW. They are DDR4 3200 PC4-25600 CL22 2Rx4 288-pin 1.2V ECC Registered RDIMMs.

Can I keep my existing unbuffered ECC DIMMs and add this 8x32GB kit alongside them?

No. The manufacturer states this registered ECC memory cannot be mixed with unbuffered or load-reduced ECC memory. All DIMMs should be the same capacity, speed and type for optimal performance.

After installing all eight 32GB modules, how do I confirm the full 256GB is running at 3200 MT/s with ECC active?

Check the system BIOS or UEFI memory information screen — it should report 256GB total, DDR4 3200 speed, CL22 timings and ECC enabled for each populated slot.

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