Lenovo ThinkSystem 64 GB TruDDR5 4800 MHz RDIMM (PN: 4X77A77032 / BNF9) – 10×4 Bulk Pack Enterprise Server-Speicher
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Title

Lenovo ThinkSystem 64 GB TruDDR5 4800 MHz RDIMM (PN: 4X77A77032 / BNF9) – 10×4 Bulk Pack Enterprise Server Memory

Keywords

Lenovo 4X77A77032, ThinkSystem TruDDR5 4800 MHz, 64 GB DDR5 RDIMM, BNF9, Server Memory Upgrade, Data Center Memory Module, ECC Registered Memory, DDR5 Server Memory, Bulk Memory Pack, Enterprise Server Memory

Description

The Lenovo 4X77A77032 is a 64 GB TruDDR5 4800 MHz RDIMM designed specifically for enterprise server environments. Leveraging DDR5-4800 (PC5-38400) speed and registered ECC support, this module is an ideal choice when planning a server memory upgrade, especially for virtualization, high-performance computing or data-center workloads.

Built under the Lenovo ThinkSystem brand, the TruDDR5 family is engineered for full compatibility and validated reliability with Lenovo ThinkSystem servers. The listing “96 PCS NEW (10 × 4)” indicates a bulk pack configuration—perfect for scaling memory across multiple server nodes or equipping high-density rack deployments.

With the “Bulk Memory Pack” format and high capacity per module (64 GB), this solution offers both cost-efficiency and scalable performance. The bulk memory pack format reduces installation overhead and simplifies large-scale upgrades in data-center environments.

Furthermore, using DDR5 memory at 4800 MHz gives a performance uplift compared to previous DDR4 generations—enabling improved throughput, better memory channel utilization and future-proofing for next-gen server platforms.

For enterprises or IT departments focusing on downtime reduction and maximum reliability, this “Enterprise Server Memory” module offers ECC Registered support, dual-rank 2Rx4 layout, and a design voltage of 1.1 V—balancing power efficiency with performance in demanding compute environments. 

Key Features

  • Part Number: 4X77A77032 (also noted as BNF9 in some listings)
  • Capacity: 64 GB per module
  • Memory Technology: TruDDR5 Registered ECC (RDIMM)
  • Speed: DDR5-4800 / PC5-38400 (4800 MHz) 
  • Rank Configuration: 2Rx4 (Dual Rank, x4 configuration) 
  • Form Factor: 288-pin RDIMM, voltage 1.10 V 
  • Designed for bulk deployment: “10×4” packaging format (10 modules per lot, 4 lots = 40 modules or more in inventory, up to 96 pieces as stated)
  • Optimized for Lenovo ThinkSystem V3 servers and validated enterprise platforms 

Configuration

ComponentSpecification
BrandLenovo ThinkSystem
Part Number4X77A77032 (BNF9)
Module Capacity64 GB
Memory TypeDDR5-4800 RDIMM ECC Registered
Speed4800 MHz / PC5-38400
Rank2Rx4 (Dual Rank, x4 configuration)
Form Factor288-pin RDIMM
Voltage1.10 V
PackagingBulk pack: 10×4 modules each, total up to 96 PCS indicated
Intended UseEnterprise server memory upgrade, data-center deployment

Compatibility

According to the official Lenovo ThinkSystem memory summary, the module 4X77A77032 belongs to the DDR5-4800 (10x4 RDIMMs) category for Intel-processor-based servers. 

Supported platforms include Lenovo ThinkSystem V3 servers (for example SR 650 V3, SR 630 V3, SR 850 V3) that are compatible with DDR5 TruDDR5 memory at 4800 MHz or higher when configured appropriately. 

To ensure full compatibility, it is important to check:

  • Server system supports DDR5 memory (not DDR4).
  • Memory channel configuration is supported (2 DPC, etc) and that 4800 MHz speed is applicable under the installed configuration (~2 DIMMs per channel or less).
  • The server firmware (BIOS/BMC) is updated and the module is listed in the vendor’s qualified memory list.

Usage Scenarios

In virtualization clusters or cloud-scale data centers, the 64 GB TruDDR5 modules allow for higher memory density per server node—enabling more virtual machines or containers per chassis without sacrificing memory speed or integrity.

For database servers, in-memory analytics or large-scale caching layers, the high speed (4800 MHz) and large capacity modules provide significant benefits in throughput and latency—making them well suited as “Data Center Memory Module” upgrades.

When deploying at scale (for example bulk purchasing for a 96 PCS pack), the “Bulk Memory Pack” arrangement minimizes procurement complexity and cost per GB, simplifies inventory management, and supports rack-wide memory upgrades across multiple servers simultaneously.

For enterprise server upgrades where downtime must be minimized, using validated modules like this ensures optimal compatibility and stability—critical in “Server Memory Upgrade” scenarios and “Enterprise Server Memory” environments with ECC and registered configurations.

Frequently Asked Questions

  • Q1: Is the Lenovo 4X77A77032 module compatible with all Lenovo ThinkSystem servers?
    A1: The module is validated for Lenovo ThinkSystem servers that support DDR5 TruDDR5 RDIMMs at 4800 MHz or higher (e.g., ThinkSystem V3 series). It may not be supported in older platforms that only support DDR4. Always check the server’s qualified vendor list. 
  • Q2: What happens if I mix this 64 GB 4800 MHz RDIMM with older slower memory modules?
    A2: When mixing memory modules of different speeds, the system will often default to the lowest common speed; this can reduce performance. For best results, use identical modules (same capacity, speed, rank) across channels.
  • Q3: Can I install these modules in pairs or any number to match server capacity?
    A3: Yes, but follow the server’s guidelines for DIMM population (number of DIMMs per channel – DPC), memory rank mix rules, and supported capacities. Using matching modules across channels ensures balanced memory bandwidth.
  • Q4: Is the “10×4” packaging format different from standard packages? What does “96 PCS NEW” mean in this listing?
    A4: The “10×4” indicates packaging that groups modules in sets (e.g., 10 modules per pack, 4 such packs) — ideal for bulk deployment. “96 PCS NEW” means the total quantity available is 96 new modules. If you are purchasing for multiple servers, this format is cost-efficient and simplifies logistics.
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