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Three DDR5 RDIMM server memory modules

Representative image · actual unit may differ

Capacity
64 GB
Speed
DDR5-5600 MT/s
Organization
2Rx4, 16 Gb DRAM
ECC
Registered ECC (RDIMM)
KingstonNew

Kingston 64GB DDR5-5600 RDIMM · 2025

P/N4X77A88052 / FRU 03LC320, 03LC321
In stockStock tier 100+
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Price and availability confirmed within one business day

  • Manufacturer channel supply
  • Ships from Dubai / Hong Kong
  • Commercial invoice, packing list, warranty docs
Datasheet

01Overview

A 64 GB DDR5-5600 registered ECC module supplied as Lenovo ThinkSystem option 4X77A88052 (TruDDR5) with Kingston DRAM per the equipment register. It is bought to populate or expand memory in ThinkSystem V3 servers on 4th/5th-gen Intel Xeon Scalable, where Lenovo-signed TruDDR5 modules are required for support.

Built for

  • Memory expansion of Lenovo ThinkSystem SR630 V3 / SR650 V3 and other V3 servers
  • Populating 8 or 16 channels for AI inference and virtualization nodes
  • Replacing or matching existing 64 GB 2Rx4 5600 MT/s DIMMs

02Specifications

Technical specifications

Module

Lenovo option part number
4X77A88052Lenovo ThinkSystem option PN; FRU 03LC320 / 03LC321. Feature code BWHS
Lenovo description
ThinkSystem 64GB TruDDR5 5600MHz (2Rx4) RDIMM
Capacity
64 GB
Type
DDR5 registered DIMM (RDIMM), ECC
Organization
2Rx4 (dual-rank, x4)
DRAM density
16 Gb
DRAM vendor
KingstonFrom the equipment register; Lenovo does not publish the DRAM vendor for TruDDR5 options

Performance

Data rate
5600 MT/s
Voltage
1.1 V (DDR5 standard)

Compatibility

Supported servers (ServerProven)
ThinkSystem SD530 V3, SD550 V3, SR630 V3, SR650 V3, SR680a V3, SR780a V3, ST650 V3
Authentication
Lenovo TruDDR5 signature — verified by ThinkSystem firmware

03Requirements

Installation

  • Lenovo ThinkSystem server from the ServerProven list — TruDDR5 DIMMs are validated for Lenovo platforms only
  • Mix only with DIMMs of the same capacity, rank and speed in a channel; follow the server population rules
  • Effective speed depends on CPU and DIMMs-per-channel; 5600 MT/s applies at 1 DPC on supported CPUs

In the box

Manufacturer retail or bulk packaging as supplied through the channel; contents confirmed on the order.

04Documents

Manufacturer

Warranty: Manufacturer warranty, details on quote

Supplied with every shipment

  • Commercial invoice and packing list
  • Manufacturer warranty registration documents
  • Certificate of origin on request
  • Serial numbers listed on the delivery note

05Related

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