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Green rectangular DDR5 RDIMM with black memory chips and gold contacts no heat spreader

OWC

OWC 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC RDIMM memory upgrade

SKU CH-NJ1K-H0HZ1

A 64 GB DDR5 ECC registered DIMM running at 5600 MT/s with CL46 latency for compatible Lenovo ThinkAgile servers

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64GB capacity expands server memory for larger workloads
  • DDR5 5600 speed delivers high data throughput
  • CL46 latency supports responsive system operation
  • ECC registered design protects data integrity in critical applications
  • 1V operation reduces power draw per module

ECC Registered DDR5 for Lenovo ThinkAgile

This 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC RDIMM is built for Lenovo ThinkAgile VX650 V3, SD650-N V3 and SR680a V3 servers. It provides registered ECC memory for workloads that require data integrity and sustained uptime. The module is not compatible with standard desktop computers or unbuffered memory configurations.

JEDEC standard voltage and thermals

Operating at the JEDEC specified 1.1V, the module draws minimal power for its capacity and speed class. Without a heat spreader, it relies on server chassis airflow for cooling, producing no additional acoustic load beyond the system fans. The registered buffer reduces electrical load on the memory controller during sustained operation.

Single DIMM upgrade for qualified ThinkAgile

The 288-pin RDIMM installs directly into compatible ThinkAgile VX650 V3, SD650-N V3 and SR680a V3 memory slots. It cannot be mixed with unbuffered or load-reduced ECC DIMMs, so all slots in a channel must use registered modules. Builders needing consumer desktop memory or non-ECC configurations should select a different product line.

How it compares

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

Price $1,756.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $27.45 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo ThinkAgile VX650 V3
Lenovo ThinkAgile SD650-N V3
Lenovo ThinkAgile SR680a V3

Other versions of this model

5 more in the same range

Questions about this item

How do I install this 64GB DDR5 5600 CL46 2Rx4 1.1V ECC RDIMM in a Lenovo ThinkAgile VX650 V3, and what step is often missed?

Power down the server, open the chassis, align the 288-pin notch with the slot key, press firmly until both retention clips click, then verify in BIOS that the module registers at 5600 MHz with ECC active — skipping the BIOS check is the step most often missed.

What maintenance or replacement will this 64GB DDR5 5600 CL46 2Rx4 1.1V ECC RDIMM need later?

No scheduled maintenance is required; if a module fails, replace it with another DDR5 5600 CL46 2Rx4 1.1V ECC Registered DIMM of the same capacity to keep memory channels balanced.

What limit appears first on this 64GB DDR5 5600 CL46 2Rx4 1.1V ECC RDIMM under sustained server workloads?

The JEDEC-rated 5600 MHz speed and CL46 latency are the first limits; sustained heavy traffic will not exceed these specifications, and the 1.1 V operating voltage remains constant.

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