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Two green DDR4 ECC RDIMM modules without heat spreaders

OWC

OWC 32GB (2x16GB) DDR4-3200 ECC RDIMM CL22 1Rx4 1.2V 288-pin Cisco UCS Kit

SKU CH-ATK1-8XFJH

A 32 GB DDR4-3200 ECC registered dual-rank kit validated for Cisco UCS B200 M6, C125 M5, C220 M6, C240 M6 and C245 M6 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (2 x 16GB)

Show 3 more
  • 32 GB kit (2 × 16 GB) expands server capacity for heavy workloads
  • DDR4-3200 PC4-25600 speed keeps data moving at rated throughput
  • ECC registered design detects and corrects single-bit errors in flight
  • CL22 CAS latency at 1.2 V balances timing and power draw
  • Validated for Cisco UCS B200 M6, C125 M5, C220 M6, C240 M6, C245 M6

Targeted Server Upgrade

This 32GB kit delivers two 16GB DDR4-3200 ECC registered DIMMs built for Cisco UCS B200 M6, C125 M5, C220 M6, C240 M6 and C245 M6 systems. It is intended for administrators who need validated memory to expand capacity in those specific platforms.

Build Integration

The modules use the 288-pin RDIMM form factor at 1.2V and require slots that accept registered ECC memory; they will not work in standard desktop boards or alongside unbuffered or load-reduced DIMMs. Populating both sticks frees the remaining slots for future matched pairs while keeping the memory subsystem uniform.

Sustained Operation

Rated at CL22 and PC4-25600, the kit maintains JEDEC-compliant timing under continuous server workloads such as virtualization or database tasks. The registered buffer reduces electrical load on the memory controller, helping stability during extended duty cycles without relying on a heat spreader for thermal management.

How it compares

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

Price $233.99
Cheaper than about 57% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $7.31 per GB
Cheaper than about 55% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number3R2D41R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B200 M6
Cisco UCS C125 M5
Cisco UCS C220 M6
Cisco UCS C240 M6
Cisco UCS C245 M6

Other versions of this model

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Questions about this item

Will the DDR4-3200 CL22 timing limit throughput when the Cisco UCS server runs sustained workloads?

The kit operates at DDR4-3200 (PC4-25600) with CL22 latency; sustained throughput is determined by the memory controller in the Cisco UCS platform.

How much heat or power do the two 16 GB registered ECC modules add during all-day operation?

Each module runs at 1.2 V without a heat spreader; total power draw and thermal output depend on the server's memory-subsystem design.

Which existing Cisco UCS part numbers must this kit replace to work correctly?

The kit replaces Cisco part numbers UCSMRX16G1RW and UCSXMRX16G1RW in the B200 M6, C125 M5, C220 M6, C240 M6 and C245 M6 servers.

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