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OWC

OWC 64GB (4x16GB) DDR4 2400 CL17 ECC Registered RDIMM Cisco UCS B200 M4 C220 M4

SKU CH-JHJ3-J66MZ

A 64 GB kit of four 16 GB DDR4 2400 ECC registered DIMMs for Cisco UCS B200 M4 and C220 M4 servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 64GB (4 x 16GB)

  • ECC registered design protects data integrity in servers
  • 64 GB kit (4 × 16 GB) expands Cisco UCS B200 M4 and C220 M4 capacity
  • DDR4 2400 CL17 at 1.2 V balances speed with low power
  • 288-pin RDIMM form factor fits validated Cisco UCS slots
  • Replaces Cisco part numbers UCSMR1X161RVA and UCSMR1X161RVG

Cisco UCS DDR4 Server Memory Upgrade

This OWC kit provides 64 GB of DDR4 ECC Registered RDIMM memory across four 16 GB modules. It is designed for Cisco UCS B200 M4 and C220 M4 servers that require registered, error-correcting memory. The modules run at 2400 MHz with CL17 latency at 1.2 V.

Suited for Cisco UCS B200 M4 and C220 M4 owners

This kit fits administrators upgrading or repairing those specific Cisco platforms. It will not work in standard desktop computers, consumer laptops, or any system that requires unbuffered or load-reduced DIMMs. Builders needing different capacities, speeds, or form factors should look elsewhere.

Registered ECC RDIMM with 1Rx4 organisation

The modules use a 288-pin registered design with single-rank x4 chips and on-board ECC. This organisation is mandatory for compatibility with the target Cisco servers; mixing with unbuffered or LRDIMM memory is not supported.

How it compares

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

Price $394.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.17 per GB
Cheaper than about 64% 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 number2R4D41R4064S
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B200 M4
Cisco UCS C220 M4

Other versions of this model

5 more in the same range

Questions about this item

What comes in the OWC 64GB kit and do I need anything else to install it?

The kit contains four 16 GB DDR4 2400 CL17 ECC Registered RDIMM modules, part number 2R4D41R4064S. No extra parts are required; the modules plug directly into the 288-pin slots of a Cisco UCS B200 M4 or C220 M4 server.

Should I choose this 64 GB kit or a different capacity for my Cisco UCS server?

This kit provides 64 GB total via four 16 GB 1Rx4 modules. Select it when your B200 M4 or C220 M4 needs that exact capacity and rank configuration; choose a different kit only if your memory plan calls for another total or module size.

What does the 2400 CL17 rating mean once the memory is running in my Cisco UCS B200 M4?

The modules operate at DDR4 2400 MT/s with CAS latency 17 at 1.2 V. In the B200 M4 or C220 M4 they deliver PC4-19200 bandwidth with ECC error correction and registered signalling for server-grade stability.

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