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Two green 288-pin DDR4 RDIMM modules with gold contacts and black chips

OWC

OWC 32GB (2x16GB) DDR4 2933 ECC Registered RDIMM memory upgrade

SKU CH-F9KT-4G02K

A 32 GB DDR4 2933 ECC registered RDIMM kit of two 16 GB modules for Cisco HX and C480 M5 servers

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (2 x 16GB)

  • ECC registered design protects data integrity in servers
  • 32 GB kit (2 × 16 GB) expands Cisco M5 capacity
  • DDR4 2933 CL21 at 1.2 V matches OEM speed
  • 288-pin RDIMM form factor fits listed Cisco models
  • Backward compatible with 2133, 2400 and 2666 MHz systems

OWC 32GB DDR4 ECC RDIMM kit

This OWC kit delivers 32GB of DDR4 2933 registered ECC memory as two 16GB modules. It is built for Cisco HX220c M5, HX240c M5, HXAF220c M5, HX-E-220M5SX and C480 ML M5 servers. The modules run at 1.2V with CL21 latency and a 1Rx4 organisation. They replace Cisco part numbers HXMRX16G1RTH and UCSMRX16G1RTH.

Who this suits and who it does not

This memory fits administrators upgrading the listed Cisco platforms with registered ECC RDIMMs. It will not work in standard desktop computers or in systems that require unbuffered or load-reduced ECC DIMMs. Buyers needing higher capacities or different form factors should look elsewhere.

Build integration notes

Each module uses the 288-pin DDR4 RDIMM form factor and operates at 1.2V. The kit is backward compatible with 2133, 2400 and 2666MHz bus speeds. No heat spreader is fitted, so airflow in the chassis should be sufficient for the installed density.

How it compares

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

Price $197.99
Cheaper than about 59% 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 $6.19 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D41R4032P
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco HX220c M5
Cisco HX240c M5
Cisco HXAF220c M5
Cisco HX-E-220M5SX
Cisco C480 ML M5

Other versions of this model

5 more in the same range

Questions about this item

Does this 288-pin DDR4 ECC RDIMM kit require a server or workstation motherboard that supports registered memory?

Yes, the modules are ECC registered and will only work in systems designed for registered DDR4 RDIMMs such as the listed Cisco HX and C480 servers.

Can these 2933 MHz CL21 modules run alongside existing 2133 MHz or 2400 MHz DDR4 ECC RDIMMs in the same server?

The kit is backward compatible with 2133 MHz, 2400 MHz and 2666 MHz DDR4 ECC registered memory, so it can operate alongside slower modules at the lower common speed.

How can I verify the kit is running at 2933 MHz with CL21 timings after installation?

Check the server BIOS or a hardware monitoring tool; it should report each 16 GB module as DDR4-2933 (PC4-23400) with CAS latency 21.

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