64GB DDR4 Server Memory

Key takeaways

  • 1,349 listings match this collection right now.
  • A 64GB RDIMM reaches that capacity using higher-density DRAM die on a dual-rank module, while a 64GB LRDIMM reaches it with a data buffer chip across a quad-rank design.
  • Third-generation Xeon Scalable and EPYC Rome platforms qualify 64GB RDIMM at 3200, while earlier DDR4 platforms need the buffered LRDIMM version to reach the same capacity.
  • Populating every channel with 64GB modules pushes a two-socket DDR4 platform toward its maximum per-socket capacity, so slot count on the board becomes the practical limit, not budget.

64GB DDR4 modules come in two types that cannot be mixed: registered (RDIMM, usually dual-rank at 3200) and load-reduced (LRDIMM, quad-rank, common at 2133 to 2666 on older platforms). The server memory guide states which type each platform accepts at each speed.

1,349 listings in this collection, filtered from Server Memory. The part number and manufacturer are stated on every listing, and the condition wherever the catalogue records one. For quantity, request a volume quote.

Items 1333-1344 of 1349

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How to choose server memory

DDR3, DDR4 and DDR5 modules are keyed differently and do not interchange, so the generation your platform accepts comes first. Registered (RDIMM), load-reduced (LRDIMM) and unbuffered (UDIMM) modules cannot be mixed in one system: add the type already installed, or replace the full bank. Match rank and speed to the existing modules, and read an installed part number from iDRAC or iLO when in doubt.

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