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OWC

OWC 256GB (4x64GB) DDR4 2400 CL17 ECC Load Reduced LRDIMM Kit for Cisco UCS B200 M4 C220 M4

SKU CH-BJ1M-BJBT3

A 256 GB DDR4 ECC load-reduced kit of four 64 GB modules at 2400 MHz CL17 for Cisco UCS B200 M4 and C220 M4 servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 256GB (4 x 64GB)

  • 256 GB server memory kit expands capacity for Cisco UCS B200 M4 and C220 M4
  • DDR4 2400 PC4-19200 CL17 delivers 19200 MT/s bandwidth at 1.2 V
  • ECC load-reduced 4Rx4 modules protect data integrity in enterprise workloads
  • 288-pin LRDIMM form factor installs directly into compatible Cisco UCS slots
  • Four matched 64 GB modules enable quad-channel performance for virtualisation and databases

Server Memory Kit

This OWC kit provides 256GB of DDR4 ECC Load Reduced memory across four 64GB modules. It is built for administrators upgrading Cisco UCS B200 M4 or C220 M4 servers. The modules operate at 1.2V and carry a CL17 latency rating. This memory will not work in standard desktop computers.

LRDIMM Constraints

Load Reduced DIMMs reduce electrical load on the server memory bus to allow higher total capacity. They cannot be mixed with unbuffered or standard registered ECC modules in the same system. The kit is backward compatible with 2133MHz operation if the platform requires it. Buyers needing standard UDIMM or RDIMM memory should look elsewhere.

Capacity Decider

The 256GB total capacity in a four-module configuration is the specification that determines fit. Verify the server has four available 288-pin slots and supports 4Rx4 LRDIMM population rules. This kit replaces Cisco part number UCSML1X644RVA. Systems requiring different densities or rank structures will not accept this kit.

How it compares

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

Price $1,431.99
Pricier than about 64% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $5.59 per GB
Cheaper than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2L4D44R4256S
Total capacity256 GB (4 × 64 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS B200 M4
Cisco UCS C220 M4

Other versions of this model

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Questions about this item

Should I choose the 256GB kit with four 64GB modules or a different capacity for my Cisco UCS B200 M4?

The 256GB kit provides four 64GB LRDIMMs that fill four slots on the Cisco UCS B200 M4 or C220 M4, delivering the full capacity in a single matched set.

What does the DDR4 2400 CL17 rating mean once the modules are installed in a Cisco UCS server?

The modules run at 2400 MT/s with CAS latency 17 at 1.2V, and they will also operate at 2133 MT/s if the platform requires the lower speed.

How does the ECC Load Reduced 288-pin interface affect what I can install alongside these modules?

These 4Rx4 LRDIMMs must not be mixed with unbuffered or standard registered ECC DIMMs; only identical Load Reduced modules are supported in the same system.

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