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Green circuit board with gold contacts and black memory chips, no heat spreader

OWC

OWC 64GB DDR4 2400 PC4-19200 CL17 4Rx4 288-pin 1.2V ECC Load Reduced LRDIMM memory upgrade

SKU CH-SMMY-Y7D6W

A single 64GB DDR4 2400 ECC load-reduced DIMM for Cisco UCS B200 M4 and C220 M4 servers

  • Total capacity64 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

Capacity 64GB

  • ECC load-reduced design protects data integrity in servers
  • 64 GB single module maximises capacity per slot
  • DDR4 2400 CL17 at 1.2 V balances speed and efficiency
  • Validated for Cisco UCS B200 M4 and C220 M4
  • Backward compatible with 2133 MHz systems

Server Memory Upgrade

This 64GB DDR4 LRDIMM module is built for Cisco UCS B200 M4 and C220 M4 servers. It delivers ECC load-reduced operation at 2400MHz with a CL17 latency. The single 64GB stick targets administrators who need maximum capacity per slot in compatible enterprise platforms.

288-Pin Load-Reduced Design

The module uses a 288-pin DDR4 form factor without a heat spreader and runs at 1.2V. Load-reduced buffering reduces electrical load on the memory controller, allowing higher densities than standard registered DIMMs. It cannot be mixed with unbuffered or standard registered ECC memory in the same system.

DDR4 2400 Platform Limits

The PC4-19200 interface caps bandwidth at the DDR4 2400 data rate, with backward compatibility to 2133MHz systems. Capacity scaling is limited by the server's maximum supported memory per socket and total slot count. Buyers needing higher frequencies or desktop compatibility must choose a different memory type.

How it compares

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

Price $357.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% 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 number2L4D44R464 GB
Total capacity64 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

5 more in the same range

Questions about this item

Does the DDR4-2400 PC4-19200 interface also run at 2133MHz in compatible servers?

Yes, the module is backward compatible and will operate at 2133MHz when installed in systems that only support that speed.

What physical slot and form factor does the 288-pin LRDIMM require?

It fits a standard 288-pin DDR4 DIMM slot in a Cisco UCS B200 M4 or C220 M4 server; no heat spreader is present.

How is the single 64GB LRDIMM installed, and what mixing rule must be followed?

Insert the module into an empty DDR4 slot, then ensure you do not mix it with unbuffered or standard registered ECC DIMMs in the same system.

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