4X77A81438 - Lenovo 4X77A81438 32GB DDR5-4800 ECC RDIMM

Name: Lenovo 4X77A81438 32GB DDR5-4800 ECC RDIMM
Brand: Lenovo
SKU: 4X77A81438
Price: 1615 USD
Availability: InStock

4X77A81438 - Lenovo 4X77A81438 32GB DDR5-4800 ECC RDIMM | US IT Hardware

Product overview

The Lenovo 4X77A81438 is a 32GB DDR5 registered DIMM designed for enterprise ThinkSystem servers requiring high-performance memory with data integrity protection. Operating at 4800MHz with ECC (Error-Correcting Code) technology, this module delivers superior data processing capabilities for complex workloads including Big Data Analytics, Cloud Computing, virtualization, database operations, and High Performance Computing. The single-rank (1Rx4) configuration with 288-pin form factor ensures seamless integration across ThinkSystem server platforms. Manufactured to Lenovo TruDDR5 specifications, this memory module combines reliability, performance, and long-term operational efficiency. Ideal for system integrators and IT departments maximizing system uptime and performance in demanding enterprise environments.

32GB capacity with DDR5-4800MHz speed.
ECC protection ensures data integrity.
1Rx4 rank, 288-pin RDIMM form factor.
1.1V operating voltage for efficiency.
CAS latency CL40 for responsive performance.
Lenovo TruDDR5 certified for ThinkSystem.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Certification
Manufacturer part #	4X77A81438
Brand	Lenovo
Condition	New
Bandwidth	not specified
Model Name	ThinkSystem 32GB TruDDR5 4800MHz (1Rx4) 10x4 RDIMM-A
CAS Latency	not specified
Memory Type	DDR5
Feature Code	BQ39
Memory Speed	4800MHz
Product Line	ThinkSystem
Product Type	Server Memory Module, Registered DIMM (RDIMM)

Compatible systems

The 4X77A81438 is compatible with Lenovo ThinkSystem servers featuring DDR5 memory support, including SR630 V3, SR645 V3, SR665 V3, and later generations with Intel Xeon Scalable (3rd Gen+) or AMD EPYC 9004 series processors. Full support across Linux, Windows Server, VMware, and KVM platforms. Verify specific server model and BIOS version for compatibility before purchase.

Lenovo ThinkSystem
Model: SR645 V3, SR665 V3, SR630, SR650, SR660, SR670, SR680, SR690
Form factor: 2U, 1U rack-mount
Generation: V2, V3
Verified on Lenovo ThinkSystem Memory Summary documentation. Specific compatibility varies by server generation and processor type (Intel Xeon, AMD EPYC). Consult server memory support matrix for exact compatibility.

Best for

Data Center Infrastructure
High-capacity memory upgrades for Lenovo ThinkSystem servers in large-scale data center deployments requiring reliable, ECC-protected memory for mission-critical applications.
Cloud Computing Platforms
Memory expansion for cloud service providers running virtualized workloads, supporting increased VM density and improved performance for multi-tenant environments.
Virtualization & Hyperconverged Infrastructure
Enhanced memory capacity for VMware vSphere, KVM, and Hyper-V deployments, enabling larger virtual machine allocations and improved host consolidation ratios.
Database & Analytics Workloads

Details

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Lenovo Enterprise Drives

Module Height	Standard (STD)

Memory Capacity	32GB

Memory Standard	PC5-38400R

DRAM Chip Density	16Gb per chip

Operating Voltage	1.1V

Part Number (SKU)	4X77A81438

Processor Support	Intel Xeon Scalable 3rd Gen (Ice Lake) and later, AMD EPYC 9004 series

Rank Configuration	1Rx4 (single rank, x4 data width)

Compatible Platforms	Lenovo ThinkSystem servers with DDR5 support (SR630 V3, SR645 V3, SR665 V3, and later)

Module Configuration	10x4 3DS RDIMM (10 chips x 4-bit configuration)

Use Case Optimization	Big Data Analytics, Cloud Computing, Virtualization, Database operations, High Performance Computing (HPC)

Data Integrity Features	ECC error detection and correction, RDIMM registered design for electrical stability

Error Correction Code (ECC)	Yes, ECC enabled

Performance Characteristics	Superior data processing for complex workloads, reduced memory latency vs. DDR4, 50% higher bandwidth than DDR4

Weight	0.1 lbs
Form Factor	288-pin RDIMM (Registered DIMM)
Physical Dimensions	0.5 x 2 x 8 inches (height x width x length)

CO2 Savings Rating	13.64 (Renewtech environmental metric)

Frequently asked questions

What is the memory speed and capacity of the 4X77A81438?

The 4X77A81438 provides 32GB of DDR5 memory operating at 4800MHz clock speed. This delivers superior data processing capabilities essential for handling complex enterprise workloads. The module is registered (RDIMM) with ECC error correction, making it suitable for mission-critical server environments requiring data integrity assurance.

Is this memory module compatible with all Lenovo ThinkSystem servers?

The 4X77A81438 is optimized for Lenovo ThinkSystem servers supporting DDR5 memory. Compatibility depends on the specific server model and generation. Lenovo's official ThinkSystem Memory Summary documentation lists this part number (4X77A81438, feature code BQ39) for designated ThinkSystem platforms. Always verify your server's memory support specifications before purchasing.

What does ECC memory protection provide?

ECC (Error-Correcting Code) memory detects and corrects single-bit errors in real-time, preventing data corruption and system crashes. This is critical for enterprise servers running databases, virtualization, and analytics workloads where data integrity directly impacts business operations. ECC adds minimal performance overhead while dramatically improving reliability.

What is the difference between 1Rx4 and 2Rx8 memory configurations?

The 1Rx4 configuration (single rank, x4 width) uses one rank per DIMM with 4-bit data width per chip. This differs from 2Rx8 (dual rank, x8 width) which has two ranks per DIMM. 1Rx4 typically offers lower latency and better performance per module, while 2Rx8 provides higher density. The 4X77A81438's 1Rx4 design balances performance and capacity for ThinkSystem platforms.

How does DDR5-4800 compare to previous DDR4 memory generations?

DDR5-4800 offers significantly higher bandwidth and speed compared to DDR4 (typically 3200-3600MHz). DDR5 provides approximately 50% more bandwidth, enabling faster data transfers and improved performance for memory-intensive applications. The 4X77A81438 leverages DDR5 advantages while maintaining backward compatibility with Lenovo's TruDDR5 certification standards.

What is the power consumption and thermal profile of this memory module?

The 4X77A81438 operates at 1.1V, delivering efficient power consumption suitable for high-density server deployments. Standard RDIMM form factor with typical thermal design allows passive cooling without additional heat management. This efficiency reduces overall data center power consumption and cooling requirements compared to higher-voltage memory alternatives.

Can this memory be mixed with other DDR5 modules in the same server?

Memory mixing depends on server BIOS and platform specifications. Lenovo recommends using matched memory modules from the same product line for optimal stability and performance. Mixing different speeds, capacities, or ranks may result in the server running at the lowest common speed or potential compatibility issues. Consult your ThinkSystem server documentation for approved memory configurations.

Lenovo 4X77A81438 32GB DDR5-4800 ECC RDIMM

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Physical Characteristics

Environmental

Frequently asked questions

Lenovo 4X77A81438 32GB DDR5-4800 ECC RDIMM

Product overview

Featuring

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

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Physical Characteristics

Environmental

Frequently asked questions