What memory technology does the 4X77A81441 module use?

: "The 4X77A81441 belongs to the ThinkSystem 64GB TruDDR5-4800MHz RDIMM-A family, which uses TruDDR5 technology. It is categorized under DDR5 ECC Registered DIMM, indicating it is a DDR5 generation registered DIMM suitable for platforms designed for DDR5 ECC registered memory.

How is the Lenovo 4X77A81441 module classified in terms of speed?

The module is designated as TruDDR5-4800MHz, so it is a DDR5 memory module with a 4800MHz speed class. This classification is useful when verifying that server platforms support DDR5-4800MHz memory and when designing configurations that align with the platform’s supported memory speeds.

What type of DIMM is the Lenovo ThinkSystem 64GB TruDDR5-4800MHz module?

The module is described as ThinkSystem 64GB TruDDR5-4800MHz (2Rx4) RDIMM-A and falls in the DDR5 ECC Registered DIMM category. This indicates it is a registered DIMM, rather than an unbuffered module, and is intended for systems that require DDR5 ECC registered DIMMs for operation.

How can procurement teams accurately identify this memory module?

Procurement teams should reference the full model description ThinkSystem 64GB TruDDR5-4800MHz (2Rx4) RDIMM-A and the SKU 4X77A81441. Using this identifier ensures they source the correct 64GB DDR5-4800MHz RDIMM from the Lenovo ThinkSystem memory range and maintain consistency across deployments.

4X77A81441 - Lenovo 64 GB DDR5 SDRAM RAM

Name: 4X77A81441 - Lenovo 64 GB DDR5 SDRAM RAM
Brand: Lenovo
SKU: 4X77A81441
Price: 4265 USD
Availability: InStock

4X77A81441 - Lenovo 64 GB DDR5 SDRAM RAM | US IT Hardware

Product overview

The Lenovo ThinkSystem 64GB TruDDR5-4800MHz RDIMM-A, SKU 4X77A81441, is a 64GB DDR5 ECC registered DIMM designed for server environments. Classified as a DDR5 ECC Registered DIMM with 64GB capacity and 4800MHz speed, it is intended for use in systems that support RDIMM technology. As part of the ThinkSystem memory family, this module is suitable for configurations that require high-capacity memory in a single DIMM. The TruDDR5 designation indicates it belongs to Lenovo’s DDR5 server memory line. With its RDIMM form, this module targets platforms that rely on registered DIMM architecture for stability and scalability. IT procurement teams can use the SKU 4X77A81441 to accurately match this part to compatible ThinkSystem servers and plan memory configurations around its 64GB capacity and DDR5-4800MHz performance class, within the DDR5 ECC Registered DIMM category.

64GB TruDDR5 capacity for server memory expansion
DDR5-4800MHz speed classification
RDIMM-A registered DIMM module type
DDR5 ECC registered DIMM category
Lenovo ThinkSystem memory family
Identified by SKU 4X77A81441 for easy sourcing

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Featuring

Form Factor
Manufacturer part #	4X77A81441
Brand	Lenovo
Condition	New
Rank	2Rx4
Model	ThinkSystem 64GB TruDDR5-4800MHz (2Rx4) RDIMM-A
Capacity	64 GB
DIMM Type	RDIMM
Data Rate	4800 MT/s
Pin Count	288-pin
Technology	TruDDR5
ECC Support	ECC

Compatible systems

Compatible Lenovo ThinkSystem server memory module for systems such as SR635 V3.

Lenovo ThinkSystem
Model: SR635 V3
Form factor: Rack server
Generation: V3
Listed with OEM-# 4X77A81441 for SR635 V3 memory configuration.

Best for

Server memory expansion
Use the 64GB TruDDR5-4800MHz RDIMM-A module to add DDR5 ECC registered memory capacity in ThinkSystem servers that accept 4X77A81441.
Data center refresh
Suitable for data center projects standardizing on 64GB DDR5-4800MHz RDIMM modules within the Lenovo ThinkSystem portfolio.
Standardized DDR5 ECC RDIMM fleets
Ideal for environments that prefer consistent 64GB DDR5 ECC registered DIMM configurations across supported servers.

Frequently asked questions

What is the memory capacity of Lenovo 4X77A81441?

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Lenovo Enterprise Drives

Voltage	1.1 V
Operating Voltage	1.1 V

Lenovo 64 GB DDR5 SDRAM RAM

Product overview

Featuring

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Performance

Power Consumption

Networking Ports & Interfaces

Lenovo 64 GB DDR5 SDRAM RAM

Product overview

Featuring

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

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Performance

Power Consumption

Networking Ports & Interfaces