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Lenovo ThinkSystem DDR4 Memory Modules: Prices, Compatibility, Upgrade Options, RDIMM/LRDIMM Part Numbers

  • Writer: server-parts.eu server-parts.eu
    server-parts.eu server-parts.eu
  • 6 days ago
  • 4 min read

Upgrading or replacing DDR4 memory modules in Lenovo ThinkSystem servers is one of the most common tasks for anyone maintaining Lenovo SR-series servers (Lenovo ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650, SR650 V2, etc.).


Lenovo ThinkSystem DDR4 Memory Modules: Save Up To 80%

✔️ 5-Year Warranty – No Risk: Pay Only After Testing


Whether you operate virtualization clusters, databases, VMs, HCI nodes, or general workloads, choosing the right Lenovo ThinkSystem DDR4 memory module (RDIMM or LRDIMM) is very important for performance and stability.


Lenovo ThinkSystem DDR4 ECC RDIMM and LRDIMM server memory modules for SR-series enterprise servers-server-parts.eu-refurbished-used


What Is Lenovo ThinkSystem DDR4 Memory?


Lenovo ThinkSystem DDR4 memory is enterprise-grade ECC server memory validated for Lenovo platforms.


It provides:

  • ECC error correction

  • Lower failure rates

  • Integration with Lenovo XClarity diagnostics

  • Consistent performance under mixed workloads

  • Validation for specific Lenovo SR-series models


Only ECC RDIMM and ECC LRDIMM modules are supported in Lenovo ThinkSystem servers. Desktop DDR4 is not compatible.



Lenovo RDIMM vs. LRDIMM for ThinkSystem Servers


Both types are common in Lenovo ThinkSystem environments but serve different needs.


Lenovo RDIMM (Registered DIMM)

  • Best choice for general workloads

  • Lower latency

  • Typically 8GB–64GB per module

  • Most cost-effective

  • Common in ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650


Lenovo LRDIMM (Load-Reduced DIMM)

  • Designed for higher capacity per slot

  • Typically 64GB–128GB (and some 256GB)

  • Ideal for virtualization, HCI, SAP, databases

  • Slightly higher latency

  • Required when pushing maximum memory per CPU


Critical rule: RDIMM and LRDIMM cannot be mixed. The server will not boot.



Lenovo ThinkSystem DDR4 Memory Speeds and Generations


Different Lenovo generations support different DDR4 speeds:

Generation

Supported DDR4 Speeds

CPU Platform

Lenovo ThinkSystem (1st Gen) SR530, SR570, SR630, SR650

2133 / 2400 / 2666 MT/s

Intel Xeon Scalable Gen1

Lenovo ThinkSystem (2nd Gen) SR530 V2, SR550 V2, SR630 V2, SR650 V2

2666 / 2933 / 3200 MT/s

Intel Xeon Scalable Gen2

Speed rules:

  • Final speed = slowest DIMM installed

  • More DIMMs per channel → lower effective speed

  • CPU model determines the maximum speed


These rules apply to all Lenovo ThinkSystem servers using DDR4 memory.



Most Popular Lenovo ThinkSystem DDR4 Memory Modules


Below are the most widely used Lenovo DDR4 memory modules in the EU refurbished market.(Part numbers vary; Lenovo often prints FRU and PN codes.)


8GB RDIMM – Lenovo ThinkSystem DDR4

4ZC7A08706 – 8GB DDR4-2933 RDIMM, 1Rx8, 1.2V, validated for Intel-based ThinkSystem servers.



16GB RDIMM – Lenovo ThinkSystem DDR4

4ZC7A08707 – 16GB DDR4-2933 RDIMM, 1Rx4, 1.2V, used across SR530, SR550, SR630, SR650.4ZC7A08708 – 16GB DDR4-2933 RDIMM, 2Rx8, 1.2V, ideal for general workloads on ThinkSystem platforms.



32GB RDIMM – Lenovo ThinkSystem DDR4

4ZC7A08709 – 32GB DDR4-2933 RDIMM, 2Rx4, 1.2V, widely deployed in virtualization clusters and mixed workloads.



64GB RDIMM – Lenovo ThinkSystem DDR4

(Note: Lenovo focuses heavily on RDIMM rather than LRDIMM in many Intel Scalable Gen1/Gen2 platforms.)4ZC7A08634 – 64GB DDR4-2933 RDIMM, 2Rx4, 1.2V, supported on high-memory SR630 and SR650 configurations.(This part is confirmed in the Lenovo Press TruDDR4 2933 MHz memory module portfolio.)



128GB LRDIMM – Lenovo ThinkSystem DDR4

4ZC7A08635 – 128GB DDR4-2933 LRDIMM, 4Rx4, 1.2V, supported on SR650 and SR650 V2 for large virtualization, SAP, and HCI nodes.

These modules are used across ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650, and V2 variants depending on CPU generation.



Compatibility Rules for Lenovo ThinkSystem DDR4 Memory


These rules avoid almost all memory-related issues:


  • RDIMM and LRDIMM cannot be mixed

  • Both CPUs must use the same DIMM layout

  • Mixed speeds run at the slowest speed

  • Rank affects capacity and compatibility

  • CPU controls maximum memory capacity

  • Correct DIMM population order is critical

  • Firmware must be up to date (UEFI + XClarity)

  • Mixed densities allowed only for RDIMMs

  • High-capacity LRDIMMs require strong airflow


Lenovo ThinkSystem Servers Using DDR4 Memory


Lenovo ThinkSystem with Intel Xeon Scalable Gen1 (DDR4-2133 / 2400 / 2666)

  • Lenovo ThinkSystem SR530

  • Lenovo ThinkSystem SR550

  • Lenovo ThinkSystem SR570

  • Lenovo ThinkSystem SR590

  • Lenovo ThinkSystem SR630

  • Lenovo ThinkSystem SR650



Lenovo ThinkSystem with Intel Xeon Scalable Gen2 (DDR4-2666 / 2933 / 3200)

  • Lenovo ThinkSystem SR530 V2

  • Lenovo ThinkSystem SR550 V2

  • Lenovo ThinkSystem SR630 V2

  • Lenovo ThinkSystem SR650 V2


(Next-gen ThinkSystem models move to DDR5.)



Typical Lenovo DDR4 Memory Market Prices (EU Refurbished)

Module

Typical Price (EUR)

Lenovo 16GB RDIMM

25–40 EUR

Lenovo 32GB RDIMM

40–70 EUR

Lenovo 64GB LRDIMM

70–140 EUR

Lenovo 128GB LRDIMM

180–350 EUR

Prices depend on part number, rank, speed, availability, and demand.



Why Enterprises Buy Refurbished Lenovo ThinkSystem DDR4 Memory


  • Much lower cost than new

  • Long warranties from serious suppliers

  • Fully tested modules

  • Fast availability

  • No performance difference vs. new

  • Ideal for budget-controlled environments


This makes refurbished Lenovo DDR4 memory one of the best ROI upgrades for existing ThinkSystem hosts.



Choosing the Right Lenovo DDR4 Memory Module


Step 1 – Identify your server model: Lenovo ThinkSystem SR630, SR650, SR530, SR550, etc.

Step 2 – Check whether your server uses RDIMM or LRDIMM: They cannot be mixed.

Step 3 – Confirm the Lenovo DDR4 speed: 2133 / 2400 / 2666 / 2933 / 3200 MT/s depending on CPU and generation.

Step 4 – Select module capacity

  • 16GB / 32GB RDIMM → general workloads

  • 64GB / 128GB LRDIMM → virtualization, SAP, VDI, databases



Lenovo ThinkSystem DDR4 Memory Modules: Save Up To 80%

✔️ 5-Year Warranty – No Risk: Pay Only After Testing



Sources: Lenovo DDR4 Memory Module


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